Models / Grok 4.5

xAI

Grok 4.5

18 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
xAI
Sources
3
Our benchmarks
0
Price
Not yet published

Reported by others

Reported by Arena (formerly LMArena)
-0.01
Confirmed task success · rank 19 of 46
Unit
IPS effect estimate, higher is better
Range
-0.03 to 0.01
Sample
28644 observations
Configuration
Grok 4.5
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.
Reported by Arena (formerly LMArena)
-0.03
Praise over complaint · rank 21 of 46
Unit
IPS effect estimate, higher is better
Range
-0.06 to 0.00
Sample
9705 observations
Configuration
Grok 4.5
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.
Reported by Arena (formerly LMArena)
0.04
Steerability · rank 6 of 46
Unit
IPS effect estimate, higher is better
Range
0.02 to 0.06
Sample
32989 observations
Configuration
Grok 4.5
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.
Reported by Arena (formerly LMArena)
0.00
Tool grounding · rank 1 of 46
Unit
IPS effect estimate, higher is better
Range
0.00 to 0.00
Sample
2071292 observations
Configuration
Grok 4.5
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.
Reported by Arena (formerly LMArena)
1,464
Overall · rank 12 of 44
Unit
Arena rating, higher is better
Range
1,456 to 1,473
Sample
4965 votes
Configuration
Grok 4.5
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)
1,202
Overall · rank 5 of 34
Unit
Arena rating, higher is better
Range
1,195 to 1,209
Sample
31505 votes
Configuration
Grok 4.5
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)
1,465
Overall · rank 24 of 177
Unit
Arena rating, higher is better
Range
1,462 to 1,469
Sample
37162 votes
Configuration
Grok 4.5
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)
1,465
Business, management and finance · rank 22 of 402
Unit
Arena rating, higher is better
Range
1,457 to 1,473
Sample
7290 votes
Configuration
Grok 4.5
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)
1,452
Creative writing · rank 18 of 407
Unit
Arena rating, higher is better
Range
1,444 to 1,460
Sample
7601 votes
Configuration
Grok 4.5
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)
1,488
Expert prompts · rank 26 of 359
Unit
Arena rating, higher is better
Range
1,479 to 1,498
Sample
4428 votes
Configuration
Grok 4.5
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)
1,462
Instruction following · rank 24 of 409
Unit
Arena rating, higher is better
Range
1,456 to 1,468
Sample
13752 votes
Configuration
Grok 4.5
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)
1,465
Overall · rank 34 of 409
Unit
Arena rating, higher is better
Range
1,461 to 1,470
Sample
37535 votes
Configuration
Grok 4.5
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)
1,459
Writing, literature and language · rank 17 of 408
Unit
Arena rating, higher is better
Range
1,452 to 1,466
Sample
10131 votes
Configuration
Grok 4.5
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 tau2-bench
32.0%
Consistency (pass^4) · rank 2 of 21
Unit
% of tasks, higher is better
Configuration
grok-4.5
Measured
24 Jul 2026
Not shown
Not your policies or customers: the tasks and policies are tau2's own, and the customer is simulated by gpt-5.2.
Reported by tau2-bench
47.9%
Task success (pass^1) · rank 3 of 21
Unit
% of tasks, higher is better
Configuration
grok-4.5
Measured
24 Jul 2026
Not shown
Not your policies or customers: the tasks and policies are tau2's own, and the customer is simulated by gpt-5.2.
Reported by UGI Leaderboard
21.0%
Requested-length error · rank 195 of 370
Unit
% off the requested word count, lower is better
Configuration
Grok 4.5
Measured
8 Jul 2026
Not shown
Not other format limits such as character counts or bullet counts.
Reported by UGI Leaderboard
0.32
Style adherence · rank 292 of 370
Unit
score from 0 to 1, higher is better
Configuration
Grok 4.5
Measured
8 Jul 2026
Not shown
Not brand voice on your own examples: UGI's prompts are private and lean towards creative writing.
Reported by UGI Leaderboard
60.0
Writing score · rank 102 of 370
Unit
score out of 100, higher is better
Configuration
Grok 4.5
Measured
8 Jul 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.

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