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Gemini 3.8 Flash vs Grok 4.1 Fast Reasoning

Grok 4.1 Fast Reasoning is cheaper on output tokens, while Grok 4.1 Fast Reasoning offers a larger context window. Choose Gemini 3.8 Flash or Grok 4.1 Fast Reasoning based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecGemini 3.8 FlashGrok 4.1 Fast Reasoning
ProviderDevPass (LLM Gateway)DevPass (LLM Gateway)
Input / 1M tokens$0.75$0.20
Output / 1M tokens$3.75$0.50
Context window1M2M
Parameters——
Open weightsNoNo
ReleasedSep 2026Nov 2025

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.