Is gemini-2.5-flash or gpt-5.1-codex-max cheaper?

gemini-2.5-flash is cheaper on output tokens ($2.25 vs $9.00 per 1M).

Which has the larger context window, gemini-2.5-flash or gpt-5.1-codex-max?

gemini-2.5-flash has the larger context window (1M tokens).

gemini-2.5-flash vs gpt-5.1-codex-max

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 gpt-5.1-codex-max based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	gemini-2.5-flash	gpt-5.1-codex-max
Provider	Jiekou.AI	Jiekou.AI
Input / 1M tokens	$0.27	$1.13
Output / 1M tokens	$2.25	$9.00
Context window	1M	400K
Parameters	—	—
Open weights	No	No
Released	Jan 2026	Jan 2026

gemini-2.5-flash details →gpt-5.1-codex-max details →

FAQ

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