xAI
xAI
Language model · United States ·Nov 2025

Grok 4.1 Fast

Language Proprietary

About Grok 4.1 Fast

Grok 4.1 Fast is an AI model developed by xAI, in the language category, released in 2025, made available as a proprietary (API-only) model. Grok 4.1 Fast release announcement..

On this page you'll find Grok 4.1 Fast's full specifications. Review provider pricing and benchmark scores below, or compare Grok 4.1 Fast head-to-head with other language models.

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Frequently asked questions

What is Grok 4.1 Fast? ▶

Grok 4.1 Fast release announcement. It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created Grok 4.1 Fast? ▶

Grok 4.1 Fast was developed by xAI and released in 2025.

Is Grok 4.1 Fast open source or proprietary? ▶

Grok 4.1 Fast is a proprietary model. It is accessed through an API rather than by downloading the weights.

How much does Grok 4.1 Fast cost? ▶

Pricing for Grok 4.1 Fast depends on the provider. See the providers table on this page for the latest API rates.

How does Grok 4.1 Fast perform on benchmarks? ▶

Benchmark scores for Grok 4.1 Fast are listed on this page as they are published. You can compare it head-to-head with other models on the GenAIList compare tool.

Grok 4.1 Fast Is FREE Now… But Is It Any Good?
Grok 4.1 FAST Just Dropped — Free on OpenRouter! 🚀🔥

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