Claude Opus 4.1 (unknown thinking): benchmark scores, price and ranking
Claude Opus 4.1 (unknown thinking) from Anthropic ranks #292 of 743 LLMs on the LLMs Tiger aggregate benchmark score (49.1), based on 7 benchmark results captured up to 2026-10-13.
- Organisation
- Anthropic
- Type
- Frontier model
- Open weights
- No
- Released
- 2025-08-05 (source: epoch)
- Cheapest API price
- $15.00 in / $75.00 out per million tokens (via openrouter, observed 2026-10-13T20:47Z)
- Aggregate rank
- #292 of 743 (score 49.1)
Relative to other models, Claude Opus 4.1 (unknown thinking) is strongest on SimpleBench (#8 of 61) and weakest on WebDev Arena (#38 of 67).
Across the 7 benchmarks where at least ten models are scored, Claude Opus 4.1 (unknown thinking) is in the top 10% on 0 and in the top half on 6.
Its cheapest listed input price, $15.00 per million tokens, is lower than that of 2% of the 427 models with a listed price.
Claude Opus 4.1 (unknown thinking) benchmark results
| Benchmark | Score | Rank | Source | Captured |
|---|---|---|---|---|
| SimpleBench | 60.0% | #8 of 61 | Epoch AI Benchmarking Hub | 2026-10-13 |
| EnigmaEval | 7.2% | #6 of 24 | Epoch AI Benchmarking Hub | 2026-10-13 |
| LMCA | 37.1% | #39 of 108 | Epoch AI Benchmarking Hub | 2026-10-13 |
| DTBench | 80.0% | #54 of 146 | Epoch AI Benchmarking Hub | 2026-10-13 |
| Humanity's Last Exam | 11.5% | #12 of 27 | Epoch AI Benchmarking Hub | 2026-10-13 |
| Terminal-Bench 2.0 | 38.0% | #14 of 28 | Epoch AI Benchmarking Hub | 2026-10-13 |
| WebDev Arena | 1,389 | #38 of 67 | Epoch AI Benchmarking Hub | 2026-10-13 |
About Claude Opus 4.1 (unknown thinking)
Claude Opus 4.1 (unknown thinking) is a frontier model from Anthropic. It was released on 2025-08-05, according to Epoch AI. The cheapest API listing we track charges $15.00 per million input tokens and $75.00 per million output tokens, through openrouter. We hold 7 benchmark results for it across 4 areas, and none is in the top tenth of its board.
Where Claude Opus 4.1 (unknown thinking) stands
On our aggregate score, Claude Opus 4.1 (unknown thinking) is #292 of 743 ranked models, around the middle of the table. Its score is 49.1; the scale is centred on 50, so it sits 0.9 points below the typical model. That beats 61% of the ranked field. Among the 70 ranked Anthropic models it is #47. The next one up is Claude 3.5 Sonnet at 49.2. The next one down is claude-sonnet-4-20250514 at 48.9.
Claude Opus 4.1 (unknown thinking), benchmark by benchmark
SimpleBench puts Claude Opus 4.1 (unknown thinking) at 60.0%, #8 of 61. That beats 87% of the models tested, but 21.9 points short of Claude Fable 5 (max) (81.9%). The results either side are grok-4-0709 (60.5%) and claude-opus-4-1-20250805 (60.0%). It covers trick questions that test common sense. The board median is 41.4%, so Claude Opus 4.1 (unknown thinking) is 18.6 points above it. Source: Epoch AI Benchmarking Hub, captured 2026-10-13.
On EnigmaEval, Claude Opus 4.1 (unknown thinking) reaches 7.2%. It ranks #6 of 24, ahead of 75% of the field, and 11.1 points behind Gemini 3 Pro Preview at 18.2%. The results either side are Claude Opus 4.6 (max) (7.6%) and Claude Opus 4 (5.6%). It covers multi-step puzzle hunts. The board median is 2.9%, so Claude Opus 4.1 (unknown thinking) is 4.3 points above it. Source: Epoch AI Benchmarking Hub, captured 2026-10-13.
Claude Opus 4.1 (unknown thinking) manages 37.1% on LMCA, good for #39 of 108. Claude Opus 5.5 (max) leads at 68.2%, 31.2 points further up, and 64% of models sit below. The results either side are Kimi K2.6 (37.3%) and nemotron-3-ultra (36.9%). It covers language-model capability assessment. The board median is 29.2%, so Claude Opus 4.1 (unknown thinking) is 7.9 points above it. Source: Epoch AI Benchmarking Hub, captured 2026-10-13.
DTBench puts Claude Opus 4.1 (unknown thinking) at 80.0%, #54 of 146. That beats 63% of the models tested, but 18.9 points short of Claude Opus 5.5 (max) (98.9%). The results either side are Qwen3-235B-A22B-Thinking-2507 (80.3%) and GPT-5.4 mini (xhigh) (80.0%). It covers dynamic tool-use benchmark. The board median is 68.8%, so Claude Opus 4.1 (unknown thinking) is 11.2 points above it. Source: Epoch AI Benchmarking Hub, captured 2026-10-13.
On Humanity's Last Exam, Claude Opus 4.1 (unknown thinking) reaches 11.5%. It ranks #12 of 27, ahead of 56% of the field, and 29.0 points behind Muse Spark at 40.6%. The results either side are Gemini 2.5 Flash Preview (Apr 2025) (12.1%) and gemini-2.5-flash-preview-05-20 (11.0%). It covers expert-level questions across domains. The board median is 10.7%, so Claude Opus 4.1 (unknown thinking) is 0.8 points above it. Source: Epoch AI Benchmarking Hub, captured 2026-10-13.
Claude Opus 4.1 (unknown thinking) manages 38.0% on Terminal-Bench 2.0, good for #14 of 28. Gemini 3 Pro Preview leads at 69.4%, 31.4 points further up, and 50% of models sit below. The results either side are claude-opus-4-1-20250805 (38.0%) and MiniMax-M2.1 (36.6%). It covers real terminal tasks (agent + model). The board median is 37.3%, so Claude Opus 4.1 (unknown thinking) is 0.7 points above it. Source: Epoch AI Benchmarking Hub, captured 2026-10-13.
Claude Opus 4.1 (unknown thinking) lands below the middle on WebDev Arena: 1,389, #38 of 67, with 55% of the field scoring higher. Claude Opus 5.5 (max) leads at 1,820; the closest result above is MiniMax-M2.7 at 1,398. It covers building web apps, crowd-voted (Elo). The board median is 1,433, so Claude Opus 4.1 (unknown thinking) is 45 points below it. Source: Epoch AI Benchmarking Hub, captured 2026-10-13.
Strengths and weaknesses
Software engineering: uneven, ahead of 47% of the field on average across 2 benchmarks. Its best board here is Terminal-Bench 2.0 (#14 of 28) and its weakest is WebDev Arena (#38 of 67). Reasoning, maths and science: solid, ahead of 72% of the field on average across 3 benchmarks. Its best board here is SimpleBench (#8 of 61) and its weakest is Humanity's Last Exam (#12 of 27).
Price and value
The median input price across the 427 priced models is $0.500 per million tokens, so Claude Opus 4.1 (unknown thinking) costs more than the typical listing. Models that score within 1.5 points or better and cost less: Qwen2.5-Coder-7B-Instruct ($0.010, 49.5), DeepSeek V4.1 Flash (high) ($0.010, 48.9), DeepSeek V4 Flash 0731 (max) ($0.016, 53.1). Similar scores cost more on GPT-4 (0125) ($30.00) and gpt-4.5-preview ($75.00).
Release history
The Anthropic model released before it was claude-opus-4-1-20250805_32K on 2025-08-05, which scores 46.0. The next one was Claude 4.5 Sonnet on 2025-09-29, at 51.2.
Reading these numbers
The 7 scores on this page come from 1 source: Epoch AI Benchmarking Hub (7). No official leaderboard supplied any of them, so treat them as third-party measurements. The leaderboard also lists 1 other reasoning-effort setting of this model, which redirect here. This page shows the highest. With 7 results the aggregate rank can move a lot when one new score arrives.
Claude Opus 4.1 (unknown thinking) is also listed at 1 other reasoning-effort setting; this page shows the highest-effort row, which is the one the leaderboard keeps by default.
Models ranked nearby
- #289 kimi-k2p5 (49.2)
- #290 gpt-5-chat (49.2)
- #291 Claude Code + Qwen3.8-Max-0902 (49.1)
- #293 Kimi K2.5 (instant) (49.1)
- #294 kimi-k2-0711-preview (49.1)
- #295 TTS(Bo8) (49.1)
More from Anthropic
- Claude Opus 5.5 (max) (#1, 64.3)
- Claude Fable 5.1 (max) (#3, 61.9)
- Claude Sonnet 5.5 (max) (#4, 60.8)
- Claude Opus 5 (max) (#8, 60.0)
- Claude Fable 5 (max) (#9, 59.9)
- claude-opus-4-8-xhigh-effort (#14, 56.6)
Compare it on the live leaderboard → · How the aggregate score works