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Grok 4 Fast (Reasoning)

Grok 4 Fast (Reasoning)

Frontier xAI

Reasoning-enabled Grok 4 with 2M context. Low latency for time-sensitive tasks and huge context window.

Try on Simtheory
Claude 3.7 Sonnet Frontier Claude 3.7 Sonnet (high output) Frontier Claude 3.7 Sonnet (thinking) Frontier Claude 4.5 Opus Frontier Claude 4.5 Sonnet Frontier Claude 4.5 Sonnet (thinking) Frontier Claude 4.6 Opus Frontier Claude 4.6 Opus Max Frontier Claude 4.6 Sonnet Frontier Claude 4.6 Sonnet Max Frontier

Specifications

Context window 2,000,000 tokens
Max output 30,000 tokens
Knowledge cutoff June 2025
Multipart messages No
Vision capabilities No

Default Parameters

Temperature 0.3
Top P 1.0
Frequency penalty 0.0
Presence penalty 0.0
Top K 50

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