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Grok 4.1 Fast
grok-4-1-fastFast, cost-efficient Grok variant for high-throughput applications.
Context Window
131.1K
tokens
Max Output
16.4K
tokens
Input Price
$0.20
per 1M tokens
Output Price
$0.50
per 1M tokens
Details
Familygrok-4
Training Cutoff2025-12-01
ReleasedFebruary 15, 2026
Aliasesgrok-4-1-fast-non-reasoning
Capabilities
FunctionsStreamingJSON ModeCodeTool Use
Documentation
https://api.x.ai/v1/chat/completionsEvaluation Scores(3 benchmarks)
HumanEval
75%
MATH-500
68%
MMLU-Pro
65%
Quick Access
curl pikaainews.com/api/models/xai-grok-4-1-fastnpx pika-models info xai-grok-4-1-fast