Artificial Analysis
Not measured by Artificial Analysis.
Intelligence Index: a composite of reasoning, knowledge, maths and coding evaluations.
xAI
grok-4-1-fast-reasoning benchmarks, ranks and price
Where Artificial Analysis, LiveBench, LMArena and Berkeley BFCL place grok-4-1-fast-reasoning, what it costs through OpenRouter and Vercel AI Gateway, and the models either side of it on the consensus.
Read Oct 1, 2026
#19of 85
on the LLM leaderboard, with a consensus score of 65 across 2 leaderboards.
Source: Artificial Analysis, LiveBench, LMArena and Berkeley BFCL, combined by Rank.ai.
By leaderboard
Where each leaderboard places grok-4-1-fast-reasoning
LiveBench
Not measured by LiveBench.
Contamination-limited questions refreshed each release: reasoning, maths, coding, data analysis, language.
LMArena
#36of 79
Score 1431. Best run: grok-4-1-fast-reasoning.
Blind head-to-head human votes, style controlled.
Berkeley BFCL
#5of 37
Score 69.57%. Best run: Grok-4-1-fast-reasoning (FC).
Function calling and tool use, single turn to multi turn and web search.
Price and context
–
No gateway lists it.
Nearby
The models either side of grok-4-1-fast-reasoning
- #16Gemini 3.5 Flash67
- #17Gemini 3.6 Flash67
- #18GPT-5.6 Terra66
- #19grok-4-1-fast-reasoning65
- #20Claude Sonnet 4.564
- #21glm-4.664
- #22GLM 5.162
Questions about grok-4-1-fast-reasoning
How good is grok-4-1-fast-reasoning?
grok-4-1-fast-reasoning ranks #19 of 85 models on the Rank.ai LLM leaderboard, with a consensus score of 65 out of 100 across 2 leaderboards.
Is grok-4-1-fast-reasoning better than GPT-5.6 Terra?
Not on the consensus: GPT-5.6 Terra scores 66 to grok-4-1-fast-reasoning's 65. Compare them source by source below, since the leaderboards test different things.
Is grok-4-1-fast-reasoning better than Claude Sonnet 4.5?
On the consensus, yes: 65 to 64.
These models recommend brands. See if they name yours.
Enter your website. In about two minutes, Rank.ai asks ChatGPT, Claude and Gemini 12 questions your customers ask and grades how often they name you.
- Your grade out of 100How often AI names you, cites your site, and how high it ranks you.
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- The pages AI readsThe sources behind each answer.
- Three fixesWhat to fix first, with a brief for the first article.