1,394
Overall · rank 144 of 177
- Unit
- Arena rating, higher is better
- Range
- 1,387 to 1,401
- Sample
- 6843 votes
- Configuration
- GPT-5 Mini (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.
1,381
Business, management and finance · rank 156 of 402
- Unit
- Arena rating, higher is better
- Range
- 1,372 to 1,390
- Sample
- 4812 votes
- Configuration
- GPT-5 Mini (high)
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,324
Creative writing · rank 178 of 407
- Unit
- Arena rating, higher is better
- Range
- 1,313 to 1,334
- Sample
- 3491 votes
- Configuration
- GPT-5 Mini (high)
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,400
Expert prompts · rank 133 of 359
- Unit
- Arena rating, higher is better
- Range
- 1,383 to 1,418
- Sample
- 1208 votes
- Configuration
- GPT-5 Mini (high)
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,373
Instruction following · rank 152 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,365 to 1,381
- Sample
- 6947 votes
- Configuration
- GPT-5 Mini (high)
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,390
Overall · rank 156 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,385 to 1,394
- Sample
- 26641 votes
- Configuration
- GPT-5 Mini (high)
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,352
Writing, literature and language · rank 166 of 408
- Unit
- Arena rating, higher is better
- Range
- 1,344 to 1,360
- Sample
- 6095 votes
- Configuration
- GPT-5 Mini (high)
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
91.0%
Irrelevance detection · rank 12 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general refusal or safety behaviour.
55.7%
Irrelevance detection · rank 95 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general refusal or safety behaviour.
44.3%
Memory · rank 15 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not long-term personal memory in a product: sessions are BFCL's scripted ones.
29.2%
Memory · rank 22 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not long-term personal memory in a product: sessions are BFCL's scripted ones.
27.5%
Multi-turn tasks · rank 43 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not open-ended agent work: the tools and tasks are BFCL's simulated APIs.
5.5%
Multi-turn tasks · rank 80 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not open-ended agent work: the tools and tasks are BFCL's simulated APIs.
55.5%
Overall accuracy · rank 17 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-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.
27.8%
Overall accuracy · rank 77 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-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.
62.5%
Relevance detection · rank 91 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not whether the call itself was right; only that one was attempted.
93.8%
Relevance detection · rank 8 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not whether the call itself was right; only that one was attempted.
69.8%
Single-turn calls (curated) · rank 87 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-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.
68.0%
Single-turn calls (curated) · rank 90 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-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.
58.6%
Single-turn calls (user-contributed) · rank 90 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-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.
62.5%
Single-turn calls (user-contributed) · rank 82 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-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.
82.0%
Web search · rank 4 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general research quality: questions have short, checkable answers.
8.5%
Web search · rank 58 of 109
- Unit
- % correct, higher is better
- Configuration
- gpt-5-mini
- Measured
- 16 Dec 2025
- Not shown
- Not general research quality: questions have short, checkable answers.
99.9%
Answer rate · rank 19 of 108
- Unit
- % of documents, higher is better
- Configuration
- GPT-5 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.
12.9%
Hallucination rate · rank 86 of 108
- Unit
- % of summaries, lower is better
- Configuration
- GPT-5 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.