TAU2
Measured May 29, 2026Source
Score
0.64
Models13 0 
Grok 4.1 Fast (Non-reasoning)
xAIxAIUnited States
A fast, multimodal model from xAI optimized for quick responses without extended reasoning. Part of the Grok 4.1 series.
FastMultimodalCoding
Input / 1M tokens
$0.00Output / 1M tokens
$0.00Output tokens/s
83.48First-token seconds
0.45sSupported plans
0Benchmark history
Evaluations
Terminalbench Hard
Measured May 29, 2026Source
Score
0.14
Lcr
Measured May 29, 2026Source
Score
0.22
Ifbench
Measured May 29, 2026Source
Score
0.36
Aime 25
Measured May 29, 2026Source
Score
0.34
Scicode
Measured May 29, 2026Source
Score
0.3
Livecodebench
Measured May 29, 2026Source
Score
0.4
Hle
Measured May 29, 2026Source
Score
0.05
Gpqa
Measured May 29, 2026Source
Score
0.64
Mmlu Pro
Measured May 29, 2026Source
Score
0.74
Artificial Analysis Math Index
Measured May 29, 2026Source
Score
34.3
Artificial Analysis Coding Index
Measured May 29, 2026Source
Score
19.5
Artificial Analysis Intelligence Index
Measured May 29, 2026Source
Score
23.6
Plan availability
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