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Grok 4.1 Fast

xAI

Grok 4.1 Fast by xAI costs per 1M input tokens and per 1M output tokens, with a -token context window.

Pricing

Input (per 1M tokens)
Output (per 1M tokens)
Cached input (per 1M)

Specifications

Provider
xAI
Context window
Parameters
Released
Nov 2025
Open weights
No
Frontier model
No

Benchmarks

LiveBenchreasoning/coding
60.1
LMArena (Chatbot Arena) Elohuman-preference
1408.5

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FAQ

Pricing is per 1M tokens (USD); confirm with the provider before production use.