1,151
Overall · rank 25 of 34
- Unit
- Arena rating, higher is better
- Range
- 1,145 to 1,156
- Sample
- 31037 votes
- Configuration
- claude-opus-4
- Measured
- 24 Aug 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,403
Business, management and finance · rank 117 of 402
- Unit
- Arena rating, higher is better
- Range
- 1,396 to 1,411
- Sample
- 7022 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,409
Business, management and finance · rank 108 of 402
- Unit
- Arena rating, higher is better
- Range
- 1,401 to 1,418
- Sample
- 5994 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,417
Creative writing · rank 58 of 407
- Unit
- Arena rating, higher is better
- Range
- 1,408 to 1,425
- Sample
- 5349 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,432
Creative writing · rank 36 of 407
- Unit
- Arena rating, higher is better
- Range
- 1,423 to 1,441
- Sample
- 4422 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,434
Expert prompts · rank 98 of 359
- Unit
- Arena rating, higher is better
- Range
- 1,421 to 1,446
- Sample
- 2248 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,448
Expert prompts · rank 79 of 359
- Unit
- Arena rating, higher is better
- Range
- 1,434 to 1,462
- Sample
- 1737 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,415
Instruction following · rank 92 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,409 to 1,422
- Sample
- 10600 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,444
Instruction following · rank 48 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,437 to 1,451
- Sample
- 9081 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,414
Overall · rank 119 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,410 to 1,418
- Sample
- 42789 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,426
Overall · rank 99 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,422 to 1,430
- Sample
- 35702 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,420
Writing, literature and language · rank 71 of 408
- Unit
- Arena rating, higher is better
- Range
- 1,413 to 1,426
- Sample
- 9224 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,431
Writing, literature and language · rank 57 of 408
- Unit
- Arena rating, higher is better
- Range
- 1,424 to 1,438
- Sample
- 7764 votes
- Configuration
- claude-opus-4
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
6.0%
Requested-length error · rank 41 of 370
- Unit
- % off the requested word count, lower is better
- Configuration
- claude-opus-4
- Measured
- 12 Sep 2025
- Not shown
- Not other format limits such as character counts or bullet counts.
6.0%
Requested-length error · rank 41 of 370
- Unit
- % off the requested word count, lower is better
- Configuration
- claude-opus-4
- Measured
- 12 Sep 2025
- Not shown
- Not other format limits such as character counts or bullet counts.
0.35
Style adherence · rank 166 of 370
- Unit
- score from 0 to 1, higher is better
- Configuration
- claude-opus-4
- Measured
- 12 Sep 2025
- Not shown
- Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
0.36
Style adherence · rank 117 of 370
- Unit
- score from 0 to 1, higher is better
- Configuration
- claude-opus-4
- Measured
- 12 Sep 2025
- Not shown
- Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
68.2
Writing score · rank 37 of 370
- Unit
- score out of 100, higher is better
- Configuration
- claude-opus-4
- Measured
- 12 Sep 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.
66.8
Writing score · rank 50 of 370
- Unit
- score out of 100, higher is better
- Configuration
- claude-opus-4
- Measured
- 12 Sep 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.
91.0%
Answer rate · rank 103 of 108
- Unit
- % of documents, higher is better
- Configuration
- claude-opus-4
- 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.
12.0%
Hallucination rate · rank 78 of 108
- Unit
- % of summaries, lower is better
- Configuration
- claude-opus-4
- 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.
