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Grok 4 Fast

ReasoningClosed weightsModels.dev
Intelligence
17.9
Rank 275 of 747 measured models
Price/1M
$0.275
Rank 201 of 664 measured models
Context window
2M
Rank 8 of 1207 measured models

Grok 4 Fast (Reasoning) scores 17.9 on the Artificial Analysis Intelligence Index, ranking 275th of 747 measured models. The closest models on this index are Qwen3.6 35B A3B (18.2), Gemini 3 Flash Preview (17.9), and Muse Glimmer (High) (17.5). At $0.275 per million tokens (3:1 input/output blended price), it is cheaper than Qwen3.6 35B A3B ($0.844), Gemini 3 Flash Preview ($1.13), and Muse Glimmer (High) ($0.525).

Artificial Analysis Indices
Reasoning
Intelligence17.9
Rank 275 of 747 measured models
Math89.7
Rank 26 of 270 measured models
Reasoning levels
Each point is a reasoning level of this model: more reasoning often raises the score but costs more. Select a point to open that level.
Intelligence Indexmost efficient ↗Price / 1M tokens
Standard Benchmarks
MMLU Pro85.0%
Rank 32 of 349 measured models
GPQA Diamond84.7%
Rank 141 of 620 measured models
HLE19.1%
Rank 231 of 667 measured models
LiveCodeBench83.2%
Rank 20 of 343 measured models
AIME 202589.7%
Rank 26 of 270 measured models
IFBench50.5%
Rank 179 of 450 measured models
AA-LCR73.7%
Rank 176 of 578 measured models
TerminalBench Hard18.9%
Rank 177 of 432 measured models
Models at a similar level
The closest models on the Intelligence Index, one configuration per family.

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