Is Gemini 3.1 Pro Preview or Claude Sonnet 4 cheaper?

Gemini 3.1 Pro Preview is cheaper on output tokens ($12.00 vs $15.00 per 1M).

Which has the larger context window, Gemini 3.1 Pro Preview or Claude Sonnet 4?

Gemini 3.1 Pro Preview has the larger context window (1M tokens).

Gemini 3.1 Pro Preview vs Claude Sonnet 4

Gemini 3.1 Pro Preview is cheaper on output tokens, while Gemini 3.1 Pro Preview offers a larger context window. Choose Gemini 3.1 Pro Preview or Claude Sonnet 4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Gemini 3.1 Pro Preview	Claude Sonnet 4
Provider	FastRouter	FastRouter
Input / 1M tokens	$2.00	$3.00
Output / 1M tokens	$12.00	$15.00
Context window	1M	200K
Parameters	—	—
Open weights	No	No
Released	Feb 2026	May 2025

Gemini 3.1 Pro Preview details →Claude Sonnet 4 details →

FAQ

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