modelbench日本語

Claude Opus 4.8

AnthropicLegacy

Input price
$5.00
Per 1 million tokens (USD)
Output price
$25.00
Per 1 million tokens (USD)
Effort levels
5total
Default: High
Benchmark results
15total
Benchmark types: 9

Model information

API model ID
claude-opus-4-8
release date
Unknown
effort
Low / Med / High (default) / Xhigh / Max
Effort source
Based on Anthropic effort documentation (platform.claude.com/docs/en/build-with-claude/effort).
Claude Code
available
Codex
unavailable
Availability notes
Listed in the Claude Code effort table. Codex's official model list (learn.chatgpt.com/docs/models) contains only OpenAI models, so codex is false (connections via a custom provider are not counted as official options).
Availability source
https://code.claude.com/docs/en/model-config

Price (USD per 1 million tokens)

Prices do not vary by effort; token consumption does.

input$5.00
output$25.00
cache read$0.50
cache write$6.25

cacheWritePerMTok is for a 5-minute cache write. 1h write $10.

Claude Opus 4.8 | $5 / MTok | $6.25 / MTok | $10 / MTok | $0.50 / MTok | $25 / MTok

Source: https://platform.claude.com/docs/en/about-claude/pricing

Benchmark results

BenchmarkeffortScoreSource cost (metric)measured/reported bysourceConditions and extraction method
GPQA Diamondnot statednot stated85.4%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _none in Epoch's Model version. Data retrieved 2026-11-12. No effort because the source effort label "none" is not in the official effort list.transcribed from table
Source excerptgpqa_diamond.csv: Model version=claude-opus-4-8_none, Best score (across scorers)=0.8535353535353535, stderr=0.025190921114603887, Started at=2026-08-06T22:19:27.000ZLocation gpqa_diamond.csv, data row 137 (file line 197), id=ckbZdkrXPwbFdjn6bmUQsi, Model version=claude-opus-4-8_none
GPQA DiamondLowLow88.4%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _low in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptgpqa_diamond.csv: Model version=claude-opus-4-8_low, Best score (across scorers)=0.8838383838383839, stderr=0.022828881775249357, Started at=2026-08-06T22:19:23.000ZLocation gpqa_diamond.csv, data row 138 (file line 198), id=GThtce6GAmRAS8srQyGQoA, Model version=claude-opus-4-8_low
GPQA DiamondMaxMax91.0%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _max in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptgpqa_diamond.csv: Model version=claude-opus-4-8_max, Best score (across scorers)=0.9103535353535354, stderr=0.019157125794612026, Started at=2026-06-07T23:03:11.000ZLocation gpqa_diamond.csv, data row 176 (file line 246), id=dqgqP2uEPswfECCVj2Kbr9, Model version=claude-opus-4-8_max
FrontierMath Tiers 1-3(v2)MaxMax80.0%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, frontiermath_tiers_1_3_v2.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _max in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptfrontiermath_tiers_1_3_v2.csv: Model version=claude-opus-4-8_max, Best score (across scorers)=0.8, stderr=0.023735633163877067, Started at=2026-06-10T15:25:15.000ZLocation frontiermath_tiers_1_3_v2.csv, data row 124 (file line 156), id=GVmgtgKMwEqc54f3jA7auP, Model version=claude-opus-4-8_max
FrontierMath Tier 4(v2)MaxMax56.1%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, frontiermath_tier_4_v2.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _max in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptfrontiermath_tier_4_v2.csv: Model version=claude-opus-4-8_max, Best score (across scorers)=0.5609756097560976, stderr=0.07846686801046543, Started at=2026-06-10T15:25:15.000ZLocation frontiermath_tier_4_v2.csv, data row 80 (file line 119), id=JiqgqBTfkGx797uowZgJbk, Model version=claude-opus-4-8_max
OTIS Mock AIME 2024-2025not statednot stated84.4%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, otis_mock_aime_2024_2025.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _none in Epoch's Model version. Data retrieved 2026-11-12. No effort because the source effort label "none" is not in the official effort list.transcribed from table
Source excerptotis_mock_aime_2024_2025.csv: Model version=claude-opus-4-8_none, Best score (across scorers)=0.8444444444444444, stderr=0.05463890236888291, Started at=2026-08-06T22:21:06.000ZLocation otis_mock_aime_2024_2025.csv, data row 145 (file line 210), id=adGE8rXdNuUFs96ioppbc5, Model version=claude-opus-4-8_none
OTIS Mock AIME 2024-2025LowLow97.8%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, otis_mock_aime_2024_2025.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _low in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptotis_mock_aime_2024_2025.csv: Model version=claude-opus-4-8_low, Best score (across scorers)=0.9777777777777777, stderr=0.022222222222222223, Started at=2026-08-06T22:20:24.000ZLocation otis_mock_aime_2024_2025.csv, data row 146 (file line 211), id=MEhV5sh6nbM8cKJGQ6HzcS, Model version=claude-opus-4-8_low
OTIS Mock AIME 2024-2025MaxMax98.3%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, otis_mock_aime_2024_2025.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _max in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptotis_mock_aime_2024_2025.csv: Model version=claude-opus-4-8_max, Best score (across scorers)=0.9833333333333333, stderr=0.014101901870444154, Started at=2026-06-07T23:44:54.000ZLocation otis_mock_aime_2024_2025.csv, data row 185 (file line 260), id=37pJqPpXTE6ia9ikmmGPJ4, Model version=claude-opus-4-8_max
SimpleQA VerifiedMaxMax53.0%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, simpleqa_verified.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _max in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptsimpleqa_verified.csv: Model version=claude-opus-4-8_max, Best score (across scorers)=0.53, stderr=0.015790799515836722, Started at=2026-08-27T19:27:24.000ZLocation simpleqa_verified.csv, data row 91 (file line 141), id=ViC6pxQZUVS3E9M9iEubF7, Model version=claude-opus-4-8_max
Chess Puzzles(Epoch AI)not statednot stated19.0%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, chess_puzzles.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _none in Epoch's Model version. Data retrieved 2026-11-12. No effort because the source effort label "none" is not in the official effort list.transcribed from table
Source excerptchess_puzzles.csv: Model version=claude-opus-4-8_none, Best score (across scorers)=0.19, stderr=0.039427724440366255, Started at=2026-10-13T13:34:59.000ZLocation chess_puzzles.csv, data row 119 (file line 173), id=jDWEviMweCdzGxLfz8sdBm, Model version=claude-opus-4-8_none
Chess Puzzles(Epoch AI)LowLow29.0%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, chess_puzzles.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _low in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptchess_puzzles.csv: Model version=claude-opus-4-8_low, Best score (across scorers)=0.29, stderr=0.045604802157206865, Started at=2026-10-13T13:35:16.000ZLocation chess_puzzles.csv, data row 118 (file line 172), id=icTHLT2S2egxYtgbjQHUng, Model version=claude-opus-4-8_low
Chess Puzzles(Epoch AI)MaxMax52.0%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, chess_puzzles.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _max in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptchess_puzzles.csv: Model version=claude-opus-4-8_max, Best score (across scorers)=0.52, stderr=0.05021167315686782, Started at=2026-10-13T13:35:27.000ZLocation chess_puzzles.csv, data row 117 (file line 171), id=PEZpuEuU65bu3ZtvjLytHq, Model version=claude-opus-4-8_max
MirrorCodeMaxMax65.6%—Epoch AIEpoch AI, Capabilities & benchmarking (benchmark_data.zip, mirrorcode.csv) CC BY 4.0third-party · Retrieved 2026-11-12Run by Epoch AI (third-party measurement). Source label "Claude Opus 4.8". effort is indicated by the suffix _max in Epoch's Model version. Data retrieved 2026-11-12.transcribed from table
Source excerptmirrorcode.csv: Model version=claude-opus-4-8_max, Best score (across scorers)=0.6555555555555556, stderr=0.10846044638639055, Started at=2026-10-21T16:46:28.000ZLocation mirrorcode.csv, data row 25 (file line 43), id=2Nf4PQvFjvbixGhtQXGQoS, Model version=claude-opus-4-8_max
Epoch Capabilities Index(ECI)not statednot stated159.94—Epoch AIEpoch AI, epoch_capabilities_index/eci_scores.csv (CC BY 4.0)third-party · Retrieved 2026-11-12A per-model metric that combines results across multiple benchmarks and multiple efforts (not per effort). Calculated by Epoch AI.transcribed from table
Source excerpteci_scores.csv: Model=Claude Opus 4.8, eci=159.94, eci_ci_low=157.86, eci_ci_high=162.2Location epoch_capabilities_index/eci_scores.csv, data row 21 (file line 22), Model=Claude Opus 4.8
τ²-bench banking_knowledge (v1.0.1)MaxMax39.7%—Sierraτ²-bench leaderboard submission claude-opus-4-8_sierra_2026-08-04 (sierra-research/tau2-bench, MIT)third-party · Retrieved 2026-11-13τ²-bench leaderboard submission claude-opus-4-8_sierra_2026-08-04 (submission_type standard, tau2_bench_version 1.0.1). Submitter "Sierra", model_organization "Anthropic": Run by Sierra, which operates τ²-bench (third-party measurement). Verified on the leaderboard (trajectories available, prompts not modified, no questions omitted). The value is pass^1 (%). reasoning_effort "max". User simulator gpt-5.2 (reasoning_effort low). Search configuration retrieval_config "alltools". Evaluation date 2026-07-23. Notes summary: 4 trial runs; seed 300.transcribed from table
Source excerptbanking_knowledge.pass_1=39.69072164948454Location In submissions/claude-opus-4-8_sierra_2026-08-04/submission.json: results.banking_knowledge.pass_1 (line 17 of file). model_name "Claude Opus 4.8". methodology.notes (line 36)

Related rankings

References