FrontierCode v1.1(main set)
Evaluates whether an agent's code changes are merged by OSS maintainers (v1.1, main set).
- Category
- Agentic coding
- Unit
- Percent (%)
- Higher is better
- Comparison groups
- 2total
- Currently available model rankings · Ranked results: 18
- All models (records): Groups: 2 · Entries: 43
- Evidence entries: 5
Rankings
Values with different source types (official, third-party, paper) or measurement conditions cannot be compared, so rankings are separated by comparison group (the same source, or sources verified to use the same conditions).
Rankings include only models currently available in Claude Code / Codex, excluding legacy models.
- View on rankings page (by metric)
- Cost balance (frontier and effort changes)
- Overall ranking (performance first)
official results (Accuracy vs Cost figure announced by Anthropic (Opus 5.5 and Sonnet 5.5 pages))
This group combines the same Accuracy vs Cost figure (Terminal-Bench 4.0 and FrontierCode v1.1 main set) on the Claude Opus 5.5 and Claude Sonnet 5.5 announcement page for each model. The scores and costs of all points appearing on both pages match. When the same point appears on both pages, only 1 row is included in the comparison group (the row from the other page is retained as evidence without a key), and the note from the other source is written in the conditions for that 1 row.
| Rank | Model | effort | Score | Source cost (metric) | measured/reported by | source |
|---|---|---|---|---|---|---|
| 1 | Claude Opus 5.5 | Med | 54.6% | $0.80Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Med: 54.6% $0.80" |
| 2 | Claude Opus 5.5 | Max | 54.4% | $6.19Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Max: 54.4% $6.19" |
| 3 | Claude Opus 5.5 | High | 54.0% | $1.09Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · High: 54.0% $1.09" |
| 4 | GPT-6 Astra | Max | 53.3% | $4.36Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Max" was mapped to max in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Max: 53.3% $4.36" |
| 5 | Claude Sonnet 5.5 | Xhigh | 52.1% | $1.59Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Xhigh: 52.1% $1.59" |
| 6 | Claude Opus 5.5 | Xhigh | 51.4% | $2.25Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Xhigh: 51.4% $2.25" |
| 7 | GPT-6 Astra | High | 50.9% | $2.85Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "High" was mapped to high in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · High: 50.9% $2.85" |
| 8 | GPT-6 Astra | Xhigh | 50.6% | $3.10Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Xhigh" was mapped to xhigh in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Xhigh: 50.6% $3.10" |
| 9 | Claude Sonnet 5.5 | High | 49.4% | $0.42Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · High: 49.4% $0.42" |
| 10 | GPT-6 Astra | Med | 48.8% | $2.28Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Med" was mapped to medium in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Med: 48.8% $2.28" |
| 11 | Claude Opus 5.5 | Low | 47.3% | $0.40Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Low: 47.3% $0.40" |
| 12 | Claude Sonnet 5.5 | Max | 46.2% | $20.78Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Max: 46.2% $20.78" |
| 13 | GPT-6 Astra | Low | 45.3% | $1.59Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Low" was mapped to low in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Low: 45.3% $1.59" |
| 14 | Claude Sonnet 5.5 | Med | 36.5% | $0.24Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Med: 36.5% $0.24" |
| 15 | Claude Sonnet 5.5 | Low | 29.3% | $0.19Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Low: 29.3% $0.19" |
official results (Introducing Claude Haiku 5.5)
| Rank | Model | effort | Score | Source cost (metric) | measured/reported by | source |
|---|---|---|---|---|---|---|
| 1 | Claude Sonnet 5.5 | Xhigh | 52.1% | — | Anthropic | Introducing Claude Haiku 5.5Retrieved 2026-11-12 · Vendor-reported value. table note: see the Haiku 5.5 System Card (effort not stated); Sonnet 5.5 is in the "For reference" columnSource excerpt52.1%Location Table, FrontierCode v1.1 (Main) row: 52.1 |
| 2 | Claude Haiku 5.5 | not stated | 46.4% | — | Anthropic | Introducing Claude Haiku 5.5Retrieved 2026-11-12 · Vendor-reported value. table note: see the Haiku 5.5 System Card (effort not stated)Source excerpt46.4%Location Table, FrontierCode v1.1 (Main) row: 46.4 |
| 3 | GPT-6 Luna | not stated | 42.4% | — | not stated | Introducing Claude Haiku 5.5Retrieved 2026-11-12 · Vendor-reported value. table note: see the Haiku 5.5 System Card (effort not stated); values for other vendor models (as listed by Anthropic)Source excerpt42.4%Location Table, FrontierCode v1.1 (Main) row: 42.4 |
All model rankings (records)
These rankings are recalculated by comparison group including legacy models and models unavailable in Claude Code / Codex. They differ from the rankings above because the set of models differs.
- View all model rankings (by metric)
- Cost balance (all models, records)
- Overall ranking (all models, records)
Show rankings including legacy and unavailable models (entries: 43)
official results (Accuracy vs Cost figure announced by Anthropic (Opus 5.5 and Sonnet 5.5 pages))
This group combines the same Accuracy vs Cost figure (Terminal-Bench 4.0 and FrontierCode v1.1 main set) on the Claude Opus 5.5 and Claude Sonnet 5.5 announcement page for each model. The scores and costs of all points appearing on both pages match. When the same point appears on both pages, only 1 row is included in the comparison group (the row from the other page is retained as evidence without a key), and the note from the other source is written in the conditions for that 1 row.
| Rank | Model | effort | Score | Source cost (metric) | measured/reported by | source |
|---|---|---|---|---|---|---|
| 1 | Claude Opus 5.5 | Med | 54.6% | $0.80Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Med: 54.6% $0.80" |
| 2 | Claude Opus 5.5 | Max | 54.4% | $6.19Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Max: 54.4% $6.19" |
| 3 | Claude Opus 5.5 | High | 54.0% | $1.09Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · High: 54.0% $1.09" |
| 4 | Claude Opus 5 | Med | 53.4% | $4.61Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5 · Med: 53.4% $4.61" |
| 5 | GPT-6 Astra | Max | 53.3% | $4.36Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Max" was mapped to max in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Max: 53.3% $4.36" |
| 6 | Claude Fable 5.1 | Low | 52.8% | $2.47Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Fable 5.1 · Low: 52.8% $2.47" |
| 7 | Claude Sonnet 5.5 | Xhigh | 52.1% | $1.59Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Xhigh: 52.1% $1.59" |
| 8 | Claude Opus 5.5 | Xhigh | 51.4% | $2.25Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Xhigh: 51.4% $2.25" |
| 9 | Claude Fable 5.1 | Med | 50.9% | $3.28Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Fable 5.1 · Med: 50.9% $3.28" |
| 9 | GPT-6 Astra | High | 50.9% | $2.85Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "High" was mapped to high in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · High: 50.9% $2.85" |
| 11 | GPT-6 Astra | Xhigh | 50.6% | $3.10Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Xhigh" was mapped to xhigh in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Xhigh: 50.6% $3.10" |
| 12 | Claude Fable 5.1 | High | 50.3% | $5.27Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Fable 5.1 · High: 50.3% $5.27" |
| 12 | Claude Fable 5.1 | Max | 50.3% | $12.82Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Fable 5.1 · Max: 50.3% $12.82" |
| 14 | Claude Sonnet 5.5 | High | 49.4% | $0.42Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · High: 49.4% $0.42" |
| 15 | GPT-6 Sol | Max | 49.3% | $2.07Cost per task | not stated | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Max" was mapped to max in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs. cost: "GPT-6 Sol · Max: 49.3% $2.07" |
| 16 | GPT-6 Astra | Med | 48.8% | $2.28Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Med" was mapped to medium in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Med: 48.8% $2.28" |
| 17 | Claude Fable 5.1 | Xhigh | 48.7% | $9.27Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Fable 5.1 · Xhigh: 48.7% $9.27" |
| 18 | GPT-6 Sol | Xhigh | 48.4% | $1.32Cost per task | not stated | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Xhigh" was mapped to xhigh in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs. cost: "GPT-6 Sol · Xhigh: 48.4% $1.32" |
| 19 | Claude Opus 5 | High | 48.0% | $7.62Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5 · High: 48.0% $7.62" |
| 19 | Claude Opus 5 | Max | 48.0% | $12.28Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5 · Max: 48.0% $12.28" |
| 21 | GPT-6 Sol | High | 47.7% | $1.04Cost per task | not stated | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "High" was mapped to high in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs. cost: "GPT-6 Sol · High: 47.7% $1.04" |
| 22 | GPT-5.6 Sol | Max | 47.5% | $4.85Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Max" was mapped to max in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-5.6 Sol · Max: 47.5% $4.85" |
| 23 | Claude Opus 5.5 | Low | 47.3% | $0.40Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5.5 · Low: 47.3% $0.40" |
| 24 | GPT-5.6 Sol | Xhigh | 46.8% | $3.88Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Xhigh" was mapped to xhigh in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-5.6 Sol · Xhigh: 46.8% $3.88" |
| 25 | Claude Sonnet 5.5 | Max | 46.2% | $20.78Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Max: 46.2% $20.78" |
| 26 | GPT-6 Sol | Med | 45.9% | $0.77Cost per task | not stated | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Med" was mapped to medium in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs. cost: "GPT-6 Sol · Med: 45.9% $0.77" |
| 27 | GPT-6 Astra | Low | 45.3% | $1.59Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Low" was mapped to low in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-6 Astra · Low: 45.3% $1.59" |
| 28 | GPT-5.6 Sol | High | 45.1% | $3.25Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "High" was mapped to high in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-5.6 Sol · High: 45.1% $3.25" |
| 29 | Claude Opus 5 | Xhigh | 43.6% | $8.99Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5 · Xhigh: 43.6% $8.99" |
| 30 | Claude Sonnet 5 | Xhigh | 42.7% | $10.07Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5 · Xhigh: 42.7% $10.07" |
| 31 | Claude Sonnet 5 | Max | 42.4% | $17.12Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5 · Max: 42.4% $17.12" |
| 32 | Claude Opus 5 | Low | 42.0% | $2.64Cost per task | Anthropic | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs Cost: "Opus 5 · Low: 42.0% $2.64" |
| 33 | GPT-5.6 Sol | Med | 39.9% | $2.50Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Med" was mapped to medium in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-5.6 Sol · Med: 39.9% $2.50" |
| 34 | Claude Sonnet 5 | High | 39.4% | $6.10Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5 · High: 39.4% $6.10" |
| 35 | GPT-6 Sol | Low | 37.3% | $0.43Cost per task | not stated | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Low" was mapped to low in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs. cost: "GPT-6 Sol · Low: 37.3% $0.43" |
| 36 | Claude Sonnet 5.5 | Med | 36.5% | $0.24Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Med: 36.5% $0.24" |
| 37 | GPT-5.6 Sol | Low | 35.4% | $1.75Cost per task | not stated | Introducing Claude Opus 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs Cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for a model from some other vendor (announced by Anthropic); the figure's effort label "Low" was mapped to low in the OpenAI API reasoning effortSource excerptFrontierCode v1.1, main set — Accuracy vs Cost: "GPT-5.6 Sol · Low: 35.4% $1.75" |
| 38 | Claude Sonnet 5 | Med | 35.2% | $3.81Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5 · Med: 35.2% $3.81" |
| 39 | Claude Sonnet 5.5 | Low | 29.3% | $0.19Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5.5 · Low: 29.3% $0.19" |
| 40 | Claude Sonnet 5 | Low | 28.7% | $2.39Cost per task | Anthropic | Introducing Claude Sonnet 5.5Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Sonnet 5 · Low: 28.7% $2.39" |
official results (Introducing Claude Haiku 5.5)
| Rank | Model | effort | Score | Source cost (metric) | measured/reported by | source |
|---|---|---|---|---|---|---|
| 1 | Claude Sonnet 5.5 | Xhigh | 52.1% | — | Anthropic | Introducing Claude Haiku 5.5Retrieved 2026-11-12 · Vendor-reported value. table note: see the Haiku 5.5 System Card (effort not stated); Sonnet 5.5 is in the "For reference" columnSource excerpt52.1%Location Table, FrontierCode v1.1 (Main) row: 52.1 |
| 2 | Claude Haiku 5.5 | not stated | 46.4% | — | Anthropic | Introducing Claude Haiku 5.5Retrieved 2026-11-12 · Vendor-reported value. table note: see the Haiku 5.5 System Card (effort not stated)Source excerpt46.4%Location Table, FrontierCode v1.1 (Main) row: 46.4 |
| 3 | GPT-6 Luna | not stated | 42.4% | — | not stated | Introducing Claude Haiku 5.5Retrieved 2026-11-12 · Vendor-reported value. table note: see the Haiku 5.5 System Card (effort not stated); values for other vendor models (as listed by Anthropic)Source excerpt42.4%Location Table, FrontierCode v1.1 (Main) row: 42.4 |
Values retained as evidence
These are values also published by another source (page) that match values in a combined comparison group. To avoid double-counting, they are excluded from rankings, chart comparison groups, overall aggregations, and role recommendations.
| Model | effort | Score | Source cost (metric) | measured/reported by | source |
|---|---|---|---|---|---|
| Claude Opus 5.5 | Low | 47.3% | $0.40Cost per task | Anthropic | Evidence (same value as comparison group Accuracy vs Cost figure announced by Anthropic (Opus 5.5 and Sonnet 5.5 pages))Introducing Claude Sonnet 5.5official · Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Opus 5.5 · Low: 47.3% $0.40" |
| Claude Opus 5.5 | Med | 54.6% | $0.80Cost per task | Anthropic | Evidence (same value as comparison group Accuracy vs Cost figure announced by Anthropic (Opus 5.5 and Sonnet 5.5 pages))Introducing Claude Sonnet 5.5official · Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Opus 5.5 · Med: 54.6% $0.80" |
| Claude Opus 5.5 | High | 54.0% | $1.09Cost per task | Anthropic | Evidence (same value as comparison group Accuracy vs Cost figure announced by Anthropic (Opus 5.5 and Sonnet 5.5 pages))Introducing Claude Sonnet 5.5official · Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Opus 5.5 · High: 54.0% $1.09" |
| Claude Opus 5.5 | Xhigh | 51.4% | $2.25Cost per task | Anthropic | Evidence (same value as comparison group Accuracy vs Cost figure announced by Anthropic (Opus 5.5 and Sonnet 5.5 pages))Introducing Claude Sonnet 5.5official · Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Opus 5.5 · Xhigh: 51.4% $2.25" |
| Claude Opus 5.5 | Max | 54.4% | $6.19Cost per task | Anthropic | Evidence (same value as comparison group Accuracy vs Cost figure announced by Anthropic (Opus 5.5 and Sonnet 5.5 pages))Introducing Claude Sonnet 5.5official · Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "FrontierCode v1.1, main set / Accuracy vs. cost" on the Anthropic announcement page. values were taken from each point's aria-label (DOM); the page shows them only in the figure; value for its own model (announced by Anthropic)Source excerptFrontierCode v1.1, main set — Accuracy vs. cost: "Opus 5.5 · Max: 54.4% $6.19" |