Models / grok-4-fast

xAI

grok-4-fast

3 published results from 2 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
2
Our benchmarks
0
Price
Not yet published

Reported by others

Reported by Arena (formerly LMArena)
1,160
Overall · rank 24 of 34
Unit
Arena rating, higher is better
Range
1,155 to 1,165
Sample
41794 votes
Configuration
grok-4-fast (arena search)
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 tau2-bench
4.1%
Consistency (pass^4) · rank 20 of 21
Unit
% of tasks, higher is better
Configuration
grok-4-fast (high reasoning, tau2)
Measured
5 May 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
15.7%
Task success (pass^1) · rank 19 of 21
Unit
% of tasks, higher is better
Configuration
grok-4-fast (high reasoning, tau2)
Measured
5 May 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.

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