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Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...
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40.9
Quality Score
1196
Arena ELO
2M
Parameters
2M
Context
This measures the amount of verifiable public evidence we have, not how capable the model is. A missing field means it has not been verified yet, not that its value is zero.
16 of 22 public signals
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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Nov 2025
Released
3/5 signals
4/4 signals
5/5 signals
1/4 signals
3/4 signals
Parameters
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Training compute
Not reported
Dataset scale
Not reported
Base model
Not reported
Source-reported access: API access · Unknown confidence
Gaps we are still tracking
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
Grok Models & Pricing | SpaceXAI Docs
Resources llms.txt Discord Email support Terms and Policies Get Started Overview Quickstart Grok 4.7 Latest Models Pricing Release Notes Text Text Generation Streaming Reasoning Structured Outputs Image Understanding Multi Agent Imagine Overview Image Generation Image Editing Multi-Image Editing Video Generation Image-to-Video Reference-to-Video New Video Editing Video Extension Voice Overview Speech to Speech Text to Speech Speech to Text New Custom Voices Ephemeral Tokens F
View sourceGrok 4.1 benchmark update
xAI published official provider-reported benchmark evidence for Grok 4.1.
View source1196
ELO Score
1189 - 1203
95% Confidence
+/-7 points
13.4K
Battles
Oct 3, 2026
Last Updated