-0.11
Confirmed task success · rank 36 of 46
- Unit
- IPS effect estimate, higher is better
- Range
- -0.13 to -0.09
- Sample
- 29018 observations
- Configuration
- MiMo-V2.5-Pro
- Measured
- 28 Sep 2026
- Not shown
- Not a success rate: the estimated effect of choosing this model as the agent's orchestrator, against an even mix of the models tested, inside Arena's own harness.
-0.11
Praise over complaint · rank 34 of 46
- Unit
- IPS effect estimate, higher is better
- Range
- -0.13 to -0.08
- Sample
- 11604 observations
- Configuration
- MiMo-V2.5-Pro
- Measured
- 28 Sep 2026
- Not shown
- Not a success rate: the estimated effect of choosing this model as the agent's orchestrator, against an even mix of the models tested, inside Arena's own harness.
-0.05
Steerability · rank 29 of 46
- Unit
- IPS effect estimate, higher is better
- Range
- -0.06 to -0.03
- Sample
- 43185 observations
- Configuration
- MiMo-V2.5-Pro
- Measured
- 28 Sep 2026
- Not shown
- Not a success rate: the estimated effect of choosing this model as the agent's orchestrator, against an even mix of the models tested, inside Arena's own harness.
-0.01
Tool grounding · rank 38 of 46
- Unit
- IPS effect estimate, higher is better
- Range
- -0.01 to -0.01
- Sample
- 1923200 observations
- Configuration
- MiMo-V2.5-Pro
- Measured
- 28 Sep 2026
- Not shown
- Not a success rate: the estimated effect of choosing this model as the agent's orchestrator, against an even mix of the models tested, inside Arena's own harness.
1,465
Overall · rank 24 of 177
- Unit
- Arena rating, higher is better
- Range
- 1,462 to 1,468
- Sample
- 68912 votes
- Configuration
- MiMo-V2.5-Pro
- 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.
1,471
Business, management and finance · rank 16 of 402
- Unit
- Arena rating, higher is better
- Range
- 1,465 to 1,478
- Sample
- 13533 votes
- Configuration
- MiMo-V2.5-Pro
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,435
Creative writing · rank 37 of 407
- Unit
- Arena rating, higher is better
- Range
- 1,428 to 1,441
- Sample
- 12737 votes
- Configuration
- MiMo-V2.5-Pro
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,506
Expert prompts · rank 13 of 359
- Unit
- Arena rating, higher is better
- Range
- 1,498 to 1,514
- Sample
- 6795 votes
- Configuration
- MiMo-V2.5-Pro
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,469
Instruction following · rank 18 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,464 to 1,474
- Sample
- 23200 votes
- Configuration
- MiMo-V2.5-Pro
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,467
Overall · rank 30 of 409
- Unit
- Arena rating, higher is better
- Range
- 1,464 to 1,471
- Sample
- 69225 votes
- Configuration
- MiMo-V2.5-Pro
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
1,450
Writing, literature and language · rank 28 of 408
- Unit
- Arena rating, higher is better
- Range
- 1,444 to 1,456
- Sample
- 17788 votes
- Configuration
- MiMo-V2.5-Pro
- Measured
- 25 Sep 2026
- Not shown
- Not accuracy or correctness: it ranks which answer voters preferred, with answer length and formatting controlled for.
23.0%
Requested-length error · rank 208 of 370
- Unit
- % off the requested word count, lower is better
- Configuration
- mimo-v2.5-pro
- Measured
- 28 Jun 2026
- Not shown
- Not other format limits such as character counts or bullet counts.
8.0%
Requested-length error · rank 55 of 370
- Unit
- % off the requested word count, lower is better
- Configuration
- mimo-v2.5-pro
- Measured
- 28 Jun 2026
- Not shown
- Not other format limits such as character counts or bullet counts.
0.36
Style adherence · rank 117 of 370
- Unit
- score from 0 to 1, higher is better
- Configuration
- mimo-v2.5-pro
- Measured
- 28 Jun 2026
- Not shown
- Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
0.40
Style adherence · rank 23 of 370
- Unit
- score from 0 to 1, higher is better
- Configuration
- mimo-v2.5-pro
- Measured
- 28 Jun 2026
- Not shown
- Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
51.7
Writing score · rank 149 of 370
- Unit
- score out of 100, higher is better
- Configuration
- mimo-v2.5-pro
- Measured
- 28 Jun 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.
57.4
Writing score · rank 114 of 370
- Unit
- score out of 100, higher is better
- Configuration
- mimo-v2.5-pro
- Measured
- 28 Jun 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.