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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
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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
Launches
2
Pricing
1
Benchmarks
2
General
7
Recent launch, pricing, benchmark, and API signals linked to this model or its provider.
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
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 sourcexAI published official provider-reported benchmark evidence for Grok 4.1.
View source

xAI published official provider-reported benchmark evidence for Grok 4.1.