1,368
Overall · rank 156 of 177
- Unit
- Arena rating, higher is better
- Range
- 1,358 to 1,378
- Sample
- 2705 votes
- Configuration
- o4 Mini
- 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.
1,379
Business, management and finance · rank 160 of 402
- Unit
- Arena rating, higher is better
- Range
- 1,372 to 1,387
- Sample
- 7020 votes
- Configuration
- o4 Mini
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,337
Creative writing · rank 164 of 407
- Unit
- Arena rating, higher is better
- Range
- 1,329 to 1,345
- Sample
- 5748 votes
- Configuration
- o4 Mini
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,408
Expert prompts · rank 130 of 359
- Unit
- Arena rating, higher is better
- Range
- 1,395 to 1,420
- Sample
- 2301 votes
- Configuration
- o4 Mini
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,369
Instruction following · rank 165 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,362 to 1,375
- Sample
- 11808 votes
- Configuration
- o4 Mini
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,391
Overall · rank 155 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,387 to 1,395
- Sample
- 44637 votes
- Configuration
- o4 Mini
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,354
Writing, literature and language · rank 164 of 408
- Unit
- Arena rating, higher is better
- Range
- 1,348 to 1,361
- Sample
- 9959 votes
- Configuration
- o4 Mini
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
83.9%
Irrelevance detection · rank 40 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general refusal or safety behaviour.
87.2%
Irrelevance detection · rank 23 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general refusal or safety behaviour.
34.2%
Memory · rank 21 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not long-term personal memory in a product: sessions are BFCL's scripted ones.
35.3%
Memory · rank 20 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not long-term personal memory in a product: sessions are BFCL's scripted ones.
41.8%
Multi-turn tasks · rank 26 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not open-ended agent work: the tools and tasks are BFCL's simulated APIs.
16.6%
Multi-turn tasks · rank 54 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not open-ended agent work: the tools and tasks are BFCL's simulated APIs.
53.2%
Overall accuracy · rank 21 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not a neutral average: the weighting is BFCL's. Not reliability on your own tools: BFCL's functions and queries are a fixed test set, and a correct call is judged by its form, not by what it achieved.
50.3%
Overall accuracy · rank 28 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not a neutral average: the weighting is BFCL's. Not reliability on your own tools: BFCL's functions and queries are a fixed test set, and a correct call is judged by its form, not by what it achieved.
81.2%
Relevance detection · rank 41 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not whether the call itself was right; only that one was attempted.
81.2%
Relevance detection · rank 41 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not whether the call itself was right; only that one was attempted.
37.7%
Single-turn calls (curated) · rank 103 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not reliability on your own tools: BFCL's functions and queries are a fixed test set, and a correct call is judged by its form, not by what it achieved.
81.3%
Single-turn calls (curated) · rank 73 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not reliability on your own tools: BFCL's functions and queries are a fixed test set, and a correct call is judged by its form, not by what it achieved.
66.1%
Single-turn calls (user-contributed) · rank 77 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not reliability on your own tools: BFCL's functions and queries are a fixed test set, and a correct call is judged by its form, not by what it achieved.
70.8%
Single-turn calls (user-contributed) · rank 54 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not reliability on your own tools: BFCL's functions and queries are a fixed test set, and a correct call is judged by its form, not by what it achieved.
75.5%
Web search · rank 10 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general research quality: questions have short, checkable answers.
71.5%
Web search · rank 15 of 109
- Unit
- % correct, higher is better
- Configuration
- o4-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general research quality: questions have short, checkable answers.
19.0%
Requested-length error · rank 163 of 370
- Unit
- % off the requested word count, lower is better
- Configuration
- o4-mini
- Measured
- 4 Oct 2025
- Not shown
- Not other format limits such as character counts or bullet counts.
36.0%
Requested-length error · rank 281 of 370
- Unit
- % off the requested word count, lower is better
- Configuration
- o4-mini
- Measured
- 4 Oct 2025
- Not shown
- Not other format limits such as character counts or bullet counts.
27.0%
Requested-length error · rank 239 of 370
- Unit
- % off the requested word count, lower is better
- Configuration
- o4-mini
- Measured
- 4 Oct 2025
- Not shown
- Not other format limits such as character counts or bullet counts.
0.31
Style adherence · rank 308 of 370
- Unit
- score from 0 to 1, higher is better
- Configuration
- o4-mini
- Measured
- 4 Oct 2025
- Not shown
- Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
0.33
Style adherence · rank 241 of 370
- Unit
- score from 0 to 1, higher is better
- Configuration
- o4-mini
- Measured
- 4 Oct 2025
- Not shown
- Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
0.31
Style adherence · rank 302 of 370
- Unit
- score from 0 to 1, higher is better
- Configuration
- o4-mini
- Measured
- 4 Oct 2025
- Not shown
- Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
43.2
Writing score · rank 189 of 370
- Unit
- score out of 100, higher is better
- Configuration
- o4-mini
- Measured
- 4 Oct 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.
46.9
Writing score · rank 171 of 370
- Unit
- score out of 100, higher is better
- Configuration
- o4-mini
- Measured
- 4 Oct 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.
45.4
Writing score · rank 175 of 370
- Unit
- score out of 100, higher is better
- Configuration
- o4-mini
- Measured
- 4 Oct 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.
98.7%
Answer rate · rank 74 of 108
- Unit
- % of documents, higher is better
- Configuration
- o4-mini
- 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.
18.6%
Hallucination rate · rank 98 of 108
- Unit
- % of summaries, lower is better
- Configuration
- o4-mini
- 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.