// COMPARISON

Grok 4 Fast

A head-to-head benchmark comparison of Grok 4 Fast across 0 evaluations.

The models

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Released
Sep 2025

We're thrilled to present Grok 4 Fast, our latest advancement in cost-efficient reasoning models. Built on xAI’s learnings from Grok 4, Grok 4 Fast delivers fro.

Full Grok 4 Fast specs β†’

Benchmark comparison

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Frequently asked questions

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This comparison covers 0 benchmarks on which at least one of the selected models has a published score.

Where do the benchmark scores come from? β–Ά

Scores are aggregated from official model cards, technical reports and standard public evaluations, and link back to each benchmark's source. They are updated as new results are published.

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