Is Gemini 3 Flash or GPT-5.1 cheaper?

Gemini 3 Flash is cheaper on output tokens ($3.00 vs $8.50 per 1M).

Which has the larger context window, Gemini 3 Flash or GPT-5.1?

Gemini 3 Flash has the larger context window (1M tokens).

Gemini 3 Flash vs GPT-5.1

Gemini 3 Flash is cheaper on output tokens, while Gemini 3 Flash offers a larger context window. Choose Gemini 3 Flash or GPT-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Gemini 3 Flash	GPT-5.1
Provider	OpenCode Zen	OpenCode Zen
Input / 1M tokens	$0.50	$1.07
Output / 1M tokens	$3.00	$8.50
Context window	1M	400K
Parameters	—	—
Open weights	No	No
Released	Dec 2025	Nov 2025

Gemini 3 Flash details →GPT-5.1 details →

FAQ

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