Is Gemini-3.1-Pro or GPT-5.5-Pro cheaper?

Gemini-3.1-Pro is cheaper on output tokens ($12.00 vs $163.64 per 1M).

Which has the larger context window, Gemini-3.1-Pro or GPT-5.5-Pro?

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

Gemini-3.1-Pro vs GPT-5.5-Pro

Gemini-3.1-Pro is cheaper on output tokens, while Gemini-3.1-Pro offers a larger context window. Choose Gemini-3.1-Pro or GPT-5.5-Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Gemini-3.1-Pro	GPT-5.5-Pro
Provider	Poe	Poe
Input / 1M tokens	$2.00	$27.27
Output / 1M tokens	$12.00	$163.64
Context window	1M	400K
Parameters	—	—
Open weights	No	No
Released	Feb 2026	Apr 2026

Gemini-3.1-Pro details →GPT-5.5-Pro details →

FAQ

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