Models / GPT-5.1

OpenAI

GPT-5.1

29 published results from 3 sources. Each card shows where the number comes from and what it does not measure. Results are never combined into one score.

Provider
OpenAI
Sources
3
Our benchmarks
0
Price
Not yet published

Reported by others

Reported by Arena (formerly LMArena)
1,416
Overall · rank 38 of 44
Unit
Arena rating, higher is better
Range
1,407 to 1,425
Sample
8244 votes
Configuration
GPT-5.1
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)
1,183
Overall · rank 15 of 34
Unit
Arena rating, higher is better
Range
1,178 to 1,189
Sample
59909 votes
Configuration
GPT-5.1
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)
1,445
Overall · rank 60 of 177
Unit
Arena rating, higher is better
Range
1,441 to 1,448
Sample
43376 votes
Configuration
GPT-5.1
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)
1,459
Overall · rank 35 of 177
Unit
Arena rating, higher is better
Range
1,455 to 1,462
Sample
40724 votes
Configuration
GPT-5.1 (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)
1,443
Business, management and finance · rank 60 of 402
Unit
Arena rating, higher is better
Range
1,436 to 1,450
Sample
8301 votes
Configuration
GPT-5.1
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)
1,448
Business, management and finance · rank 48 of 402
Unit
Arena rating, higher is better
Range
1,441 to 1,456
Sample
7746 votes
Configuration
GPT-5.1 (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)
1,408
Creative writing · rank 75 of 407
Unit
Arena rating, higher is better
Range
1,400 to 1,415
Sample
6650 votes
Configuration
GPT-5.1
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)
1,428
Creative writing · rank 47 of 407
Unit
Arena rating, higher is better
Range
1,420 to 1,436
Sample
6225 votes
Configuration
GPT-5.1 (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)
1,455
Expert prompts · rank 75 of 359
Unit
Arena rating, higher is better
Range
1,444 to 1,466
Sample
3021 votes
Configuration
GPT-5.1
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)
1,482
Expert prompts · rank 32 of 359
Unit
Arena rating, higher is better
Range
1,470 to 1,494
Sample
2604 votes
Configuration
GPT-5.1 (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)
1,426
Instruction following · rank 76 of 409
Unit
Arena rating, higher is better
Range
1,420 to 1,432
Sample
12312 votes
Configuration
GPT-5.1
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)
1,450
Instruction following · rank 41 of 409
Unit
Arena rating, higher is better
Range
1,444 to 1,457
Sample
11154 votes
Configuration
GPT-5.1 (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)
1,438
Overall · rank 83 of 409
Unit
Arena rating, higher is better
Range
1,435 to 1,442
Sample
44329 votes
Configuration
GPT-5.1
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)
1,456
Overall · rank 53 of 409
Unit
Arena rating, higher is better
Range
1,452 to 1,459
Sample
41596 votes
Configuration
GPT-5.1 (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)
1,424
Writing, literature and language · rank 67 of 408
Unit
Arena rating, higher is better
Range
1,418 to 1,431
Sample
10104 votes
Configuration
GPT-5.1
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)
1,437
Writing, literature and language · rank 48 of 408
Unit
Arena rating, higher is better
Range
1,430 to 1,444
Sample
9339 votes
Configuration
GPT-5.1 (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 UGI Leaderboard
113.0%
Requested-length error · rank 356 of 370
Unit
% off the requested word count, lower is better
Configuration
GPT-5.1 (high)
Measured
16 Nov 2025
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
157.0%
Requested-length error · rank 362 of 370
Unit
% off the requested word count, lower is better
Configuration
gpt-5.1
Measured
16 Nov 2025
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
129.0%
Requested-length error · rank 361 of 370
Unit
% off the requested word count, lower is better
Configuration
gpt-5.1
Measured
16 Nov 2025
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
0.37
Style adherence · rank 102 of 370
Unit
score from 0 to 1, higher is better
Configuration
GPT-5.1 (high)
Measured
16 Nov 2025
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
0.38
Style adherence · rank 54 of 370
Unit
score from 0 to 1, higher is better
Configuration
gpt-5.1
Measured
16 Nov 2025
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
0.37
Style adherence · rank 84 of 370
Unit
score from 0 to 1, higher is better
Configuration
gpt-5.1
Measured
16 Nov 2025
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
55.8
Writing score · rank 125 of 370
Unit
score out of 100, higher is better
Configuration
GPT-5.1 (high)
Measured
16 Nov 2025
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
50.8
Writing score · rank 155 of 370
Unit
score out of 100, higher is better
Configuration
gpt-5.1
Measured
16 Nov 2025
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
53.9
Writing score · rank 136 of 370
Unit
score out of 100, higher is better
Configuration
gpt-5.1
Measured
16 Nov 2025
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
100.0%
Answer rate · rank 1 of 108
Unit
% of documents, higher is better
Configuration
GPT-5.1 (high)
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
100.0%
Answer rate · rank 1 of 108
Unit
% of documents, higher is better
Configuration
gpt-5.1
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
12.1%
Hallucination rate · rank 81 of 108
Unit
% of summaries, lower is better
Configuration
GPT-5.1 (high)
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.
Reported by Vectara Hallucination Leaderboard
10.9%
Hallucination rate · rank 70 of 108
Unit
% of summaries, lower is better
Configuration
gpt-5.1
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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