Is Nano Banana 2 (Gemini 3.1 Flash Image) or GPT-5.3 Codex cheaper?

Nano Banana 2 (Gemini 3.1 Flash Image) is cheaper on output tokens ($3.00 vs $14.00 per 1M).

Which has the larger context window, Nano Banana 2 (Gemini 3.1 Flash Image) or GPT-5.3 Codex?

GPT-5.3 Codex has the larger context window (400K tokens).

Nano Banana 2 (Gemini 3.1 Flash Image) vs GPT-5.3 Codex

Nano Banana 2 (Gemini 3.1 Flash Image) is cheaper on output tokens, while GPT-5.3 Codex offers a larger context window. Choose Nano Banana 2 (Gemini 3.1 Flash Image) or GPT-5.3 Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Nano Banana 2 (Gemini 3.1 Flash Image)	GPT-5.3 Codex
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.50	$1.75
Output / 1M tokens	$3.00	$14.00
Context window	131K	400K
Parameters	—	—
Open weights	No	No
Released	Jun 2026	Feb 2026

Nano Banana 2 (Gemini 3.1 Flash Image) details →GPT-5.3 Codex details →

FAQ

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