Is Gemini 3.1 Flash Lite Preview or GPT 5.5 Pro cheaper?

Gemini 3.1 Flash Lite Preview is cheaper on output tokens ($1.50 vs $180.00 per 1M).

Which has the larger context window, Gemini 3.1 Flash Lite Preview or GPT 5.5 Pro?

Both models offer a similar context window.

Gemini 3.1 Flash Lite Preview vs GPT 5.5 Pro

Gemini 3.1 Flash Lite Preview is cheaper on output tokens. Choose Gemini 3.1 Flash Lite Preview 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 Flash Lite Preview	GPT 5.5 Pro
Provider	Vercel AI Gateway	Vercel AI Gateway
Input / 1M tokens	$0.25	$30.00
Output / 1M tokens	$1.50	$180.00
Context window	1M	1M
Parameters	—	—
Open weights	No	No
Released	Mar 2026	Apr 2026

Gemini 3.1 Flash Lite Preview 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.