Models / Claude Opus 4.6

Anthropic

Claude Opus 4.6

39 published results from 5 sources. Each card shows where the number comes from and what it does not measure. Results are never combined into one score.

Provider
Anthropic
Sources
5
Our benchmarks
0
Price
Not yet published

Reported by others

Reported by Arena (formerly LMArena)
1,494
Overall · rank 1 of 44
Unit
Arena rating, higher is better
Range
1,488 to 1,500
Sample
41260 votes
Configuration
Claude Opus 4.6
Measured
13 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,495
Overall · rank 1 of 44
Unit
Arena rating, higher is better
Range
1,489 to 1,502
Sample
27929 votes
Configuration
Claude Opus 4.6 (high)
Measured
13 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,223
Overall · rank 2 of 34
Unit
Arena rating, higher is better
Range
1,218 to 1,228
Sample
134699 votes
Configuration
Claude Opus 4.6
Measured
24 Aug 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,488
Overall · rank 3 of 177
Unit
Arena rating, higher is better
Range
1,486 to 1,491
Sample
80466 votes
Configuration
Claude Opus 4.6
Measured
25 Sep 2026
Not shown
Not an error rate: claims that cannot be checked on the web are skipped, and preference still carries most of the weight.
Reported by Arena (formerly LMArena)
1,494
Overall · rank 1 of 177
Unit
Arena rating, higher is better
Range
1,491 to 1,497
Sample
76191 votes
Configuration
Claude Opus 4.6 (high)
Measured
25 Sep 2026
Not shown
Not an error rate: claims that cannot be checked on the web are skipped, and preference still carries most of the weight.
Reported by Arena (formerly LMArena)
1,501
Business, management and finance · rank 1 of 402
Unit
Arena rating, higher is better
Range
1,495 to 1,507
Sample
16124 votes
Configuration
Claude Opus 4.6
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,501
Business, management and finance · rank 1 of 402
Unit
Arena rating, higher is better
Range
1,495 to 1,507
Sample
15222 votes
Configuration
Claude Opus 4.6 (high)
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,478
Creative writing · rank 4 of 407
Unit
Arena rating, higher is better
Range
1,472 to 1,484
Sample
13722 votes
Configuration
Claude Opus 4.6
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,501
Creative writing · rank 1 of 407
Unit
Arena rating, higher is better
Range
1,494 to 1,507
Sample
13637 votes
Configuration
Claude Opus 4.6 (high)
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,533
Expert prompts · rank 1 of 359
Unit
Arena rating, higher is better
Range
1,526 to 1,541
Sample
8315 votes
Configuration
Claude Opus 4.6
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,547
Expert prompts · rank 1 of 359
Unit
Arena rating, higher is better
Range
1,539 to 1,555
Sample
6977 votes
Configuration
Claude Opus 4.6 (high)
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,500
Instruction following · rank 2 of 409
Unit
Arena rating, higher is better
Range
1,495 to 1,505
Sample
27183 votes
Configuration
Claude Opus 4.6
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,513
Instruction following · rank 1 of 409
Unit
Arena rating, higher is better
Range
1,508 to 1,519
Sample
24708 votes
Configuration
Claude Opus 4.6 (high)
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,498
Overall · rank 2 of 409
Unit
Arena rating, higher is better
Range
1,494 to 1,501
Sample
80836 votes
Configuration
Claude Opus 4.6
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,505
Overall · rank 1 of 409
Unit
Arena rating, higher is better
Range
1,502 to 1,509
Sample
76518 votes
Configuration
Claude Opus 4.6 (high)
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,490
Writing, literature and language · rank 2 of 408
Unit
Arena rating, higher is better
Range
1,485 to 1,496
Sample
19764 votes
Configuration
Claude Opus 4.6
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by Arena (formerly LMArena)
1,500
Writing, literature and language · rank 1 of 408
Unit
Arena rating, higher is better
Range
1,495 to 1,506
Sample
19461 votes
Configuration
Claude Opus 4.6 (high)
Measured
25 Sep 2026
Not shown
Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
Reported by OpenHands Index
66.7%
Average · rank 4 of 34
Unit
% resolved, higher is better
Configuration
claude-opus-4.6
Measured
30 Jun 2026
Not shown
Not the model alone: the score is for the model inside the OpenHands agent, at the SDK version shown.
Reported by OpenHands Index
41.8%
Front end (SWE-Bench Multimodal) · rank 5 of 34
Unit
% resolved, higher is better
Configuration
claude-opus-4.6
Measured
30 Jun 2026
Not shown
Not the model alone: the score is for the model inside the OpenHands agent, at the SDK version shown.
Reported by OpenHands Index
56.2%
Greenfield (Commit0) · rank 3 of 34
Unit
% resolved, higher is better
Configuration
claude-opus-4.6
Measured
30 Jun 2026
Not shown
Not the model alone: the score is for the model inside the OpenHands agent, at the SDK version shown.
Reported by OpenHands Index
80.0%
Information gathering (GAIA) · rank 7 of 34
Unit
% resolved, higher is better
Configuration
claude-opus-4.6
Measured
30 Jun 2026
Not shown
Not the model alone: the score is for the model inside the OpenHands agent, at the SDK version shown.
Reported by OpenHands Index
76.8%
Issue resolution (SWE-Bench) · rank 6 of 34
Unit
% resolved, higher is better
Configuration
claude-opus-4.6
Measured
30 Jun 2026
Not shown
Not the model alone: the score is for the model inside the OpenHands agent, at the SDK version shown.
Reported by OpenHands Index
78.8%
Testing (SWT-Bench) · rank 6 of 34
Unit
% resolved, higher is better
Configuration
claude-opus-4.6
Measured
30 Jun 2026
Not shown
Not the model alone: the score is for the model inside the OpenHands agent, at the SDK version shown.
Reported by tau2-bench
11.3%
Consistency (pass^4) · rank 15 of 21
Unit
% of tasks, higher is better
Configuration
claude-opus-4.6
Measured
6 May 2026
Not shown
Not your policies or customers: the tasks and policies are tau2's own, and the customer is simulated by gpt-5.2.
Reported by tau2-bench
27.3%
Task success (pass^1) · rank 14 of 21
Unit
% of tasks, higher is better
Configuration
claude-opus-4.6
Measured
6 May 2026
Not shown
Not your policies or customers: the tasks and policies are tau2's own, and the customer is simulated by gpt-5.2.
Reported by UGI Leaderboard
5.0%
Requested-length error · rank 34 of 370
Unit
% off the requested word count, lower is better
Configuration
Claude Opus 4.6 (high)
Measured
6 Feb 2026
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
4.0%
Requested-length error · rank 28 of 370
Unit
% off the requested word count, lower is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
3.0%
Requested-length error · rank 18 of 370
Unit
% off the requested word count, lower is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
4.0%
Requested-length error · rank 28 of 370
Unit
% off the requested word count, lower is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
0.41
Style adherence · rank 7 of 370
Unit
score from 0 to 1, higher is better
Configuration
Claude Opus 4.6 (high)
Measured
6 Feb 2026
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
0.40
Style adherence · rank 30 of 370
Unit
score from 0 to 1, higher is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
0.41
Style adherence · rank 14 of 370
Unit
score from 0 to 1, higher is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
0.41
Style adherence · rank 12 of 370
Unit
score from 0 to 1, higher is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
70.9
Writing score · rank 17 of 370
Unit
score out of 100, higher is better
Configuration
Claude Opus 4.6 (high)
Measured
6 Feb 2026
Not shown
Not business copy quality: UGI's prompts are private and lean towards creative writing, and models that often refuse get no score.
Reported by UGI Leaderboard
66.1
Writing score · rank 55 of 370
Unit
score out of 100, higher is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not business copy quality: UGI's prompts are private and lean towards creative writing, and models that often refuse get no score.
Reported by UGI Leaderboard
70.7
Writing score · rank 18 of 370
Unit
score out of 100, higher is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not business copy quality: UGI's prompts are private and lean towards creative writing, and models that often refuse get no score.
Reported by UGI Leaderboard
69.0
Writing score · rank 30 of 370
Unit
score out of 100, higher is better
Configuration
claude-opus-4.6
Measured
6 Feb 2026
Not shown
Not business copy quality: UGI's prompts are private and lean towards creative writing, and models that often refuse get no score.
Reported by Vectara Hallucination Leaderboard
99.8%
Answer rate · rank 34 of 108
Unit
% of documents, higher is better
Configuration
Claude Opus 4.6
Measured
22 Sep 2026
Not shown
Not a quality score: a low rate usually means content filters were triggered, and hallucination rates are measured on answered documents only.
Reported by Vectara Hallucination Leaderboard
12.2%
Hallucination rate · rank 83 of 108
Unit
% of summaries, lower is better
Configuration
Claude Opus 4.6
Measured
22 Sep 2026
Not shown
Not errors in open questions or other tasks: only summarisation, judged by Vectara's own model (HHEM-2.3), not by people, on news-style documents rather than your data.

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