Is Gemini 2.5 Flash or Claude Sonnet 4 cheaper?

Gemini 2.5 Flash is cheaper on output tokens ($2.50 vs $15.00 per 1M).

Which has the larger context window, Gemini 2.5 Flash or Claude Sonnet 4?

Gemini 2.5 Flash has the larger context window (1M tokens).

Gemini 2.5 Flash vs Claude Sonnet 4

Gemini 2.5 Flash is cheaper on output tokens, while Gemini 2.5 Flash offers a larger context window. Choose Gemini 2.5 Flash or Claude Sonnet 4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Gemini 2.5 Flash	Claude Sonnet 4
Provider	Vertex	Vertex
Input / 1M tokens	$0.30	$3.00
Output / 1M tokens	$2.50	$15.00
Context window	1M	200K
Parameters	—	—
Open weights	No	No
Released	Jun 2025	May 2025

Gemini 2.5 Flash 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.