BenchCAD 2.1 (with tools)

Evaluates how closely hardware designs (shapes and circuits) match a reference, with partial credit from 0 to 100 (v2.1, with tools).

Category: Other
Unit: Score; Higher is better
Comparison groups: 1total; Currently available model rankings · Ranked results: 10; All models (records): Groups: 1 · Entries: 15

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.

official results (Introducing Claude Fable 5.2 and Claude Mythos 5.2)

Rank	Model	effort	Score	Source cost (metric)	measured/reported by	source
1	Claude Fable 5.2	Max	83.5	$50.77Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Max: 83.5 $50.77"
2	Claude Fable 5.2	Xhigh	74.1	$23.23Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Xhigh: 74.1 $23.23"
3	Claude Opus 5.5	Max	65.3	$19.86Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Max: 65.3 $19.86"
4	Claude Fable 5.2	High	61	$9.99Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · High: 61.0 $9.99"
5	Claude Opus 5.5	Xhigh	54.5	$8.91Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Xhigh: 54.5 $8.91"
6	Claude Fable 5.2	Med	32.4	$2.66Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Med: 32.4 $2.66"
7	Claude Opus 5.5	High	29.7	$2.57Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · High: 29.7 $2.57"
8	Claude Fable 5.2	Low	26.9	$1.89Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Low: 26.9 $1.89"
9	Claude Opus 5.5	Med	19.1	$1.11Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Med: 19.1 $1.11"
10	Claude Opus 5.5	Low	6.3	$0.03Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Low: 6.3 $0.03"

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.

Show rankings including legacy and unavailable models (entries: 15)

official results (Introducing Claude Fable 5.2 and Claude Mythos 5.2)

Rank	Model	effort	Score	Source cost (metric)	measured/reported by	source
1	Claude Fable 5.2	Max	83.5	$50.77Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Max: 83.5 $50.77"
2	Claude Fable 5.2	Xhigh	74.1	$23.23Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Xhigh: 74.1 $23.23"
3	Claude Opus 5.5	Max	65.3	$19.86Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Max: 65.3 $19.86"
4	Claude Fable 5.2	High	61	$9.99Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · High: 61.0 $9.99"
5	Claude Opus 5.5	Xhigh	54.5	$8.91Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Xhigh: 54.5 $8.91"
6	Claude Fable 5.1	Max	44.4	$34.69Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.1 · Max: 44.4 $34.69"
7	Claude Fable 5.1	Xhigh	40.5	$27.38Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.1 · Xhigh: 40.5 $27.38"
8	Claude Fable 5.2	Med	32.4	$2.66Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Med: 32.4 $2.66"
9	Claude Opus 5.5	High	29.7	$2.57Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · High: 29.7 $2.57"
10	Claude Fable 5.2	Low	26.9	$1.89Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.2 · Low: 26.9 $1.89"
11	Claude Fable 5.1	High	25.8	$12.44Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.1 · High: 25.8 $12.44"
12	Claude Opus 5.5	Med	19.1	$1.11Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Med: 19.1 $1.11"
13	Claude Fable 5.1	Med	15.7	$5.70Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.1 · Med: 15.7 $5.70"
14	Claude Fable 5.1	Low	12.1	$2.95Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Fable 5.1 · Low: 12.1 $2.95"
15	Claude Opus 5.5	Low	6.3	$0.03Cost per attempt	Anthropic	Introducing Claude Fable 5.2 and Claude Mythos 5.2Retrieved 2026-11-12 · Vendor-reported value. A point in the figure "BenchCAD 2.1 (with tools) / 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 excerpt BenchCAD 2.1 (with tools) — Accuracy vs. cost: "Opus 5.5 · Low: 6.3 $0.03"