Is Claude Opus 4.5 or Gemini 2.5 Flash cheaper?

Gemini 2.5 Flash is cheaper on output tokens ($0.71 vs $3.57 per 1M).

Which has the larger context window, Claude Opus 4.5 or Gemini 2.5 Flash?

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

Claude Opus 4.5 vs Gemini 2.5 Flash

Gemini 2.5 Flash is cheaper on output tokens, while Gemini 2.5 Flash offers a larger context window. Choose Claude Opus 4.5 or Gemini 2.5 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Opus 4.5	Gemini 2.5 Flash
Provider	QiHang	QiHang
Input / 1M tokens	$0.71	$0.09
Output / 1M tokens	$3.57	$0.71
Context window	200K	1M
Parameters	—	—
Open weights	No	No
Released	Nov 2025	Dec 2025

Claude Opus 4.5 details →Gemini 2.5 Flash details →

FAQ

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