Is Nano Banana Pro (Gemini 3 Pro Image) or GPT OSS 120B cheaper?

GPT OSS 120B is cheaper on output tokens ($0.15 vs $12.00 per 1M).

Which has the larger context window, Nano Banana Pro (Gemini 3 Pro Image) or GPT OSS 120B?

GPT OSS 120B has the larger context window (131K tokens).

Nano Banana Pro (Gemini 3 Pro Image) vs GPT OSS 120B

GPT OSS 120B is cheaper on output tokens, while GPT OSS 120B offers a larger context window. Choose Nano Banana Pro (Gemini 3 Pro Image) or GPT OSS 120B based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Nano Banana Pro (Gemini 3 Pro Image)	GPT OSS 120B
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$2.00	$0.03
Output / 1M tokens	$12.00	$0.15
Context window	66K	131K
Parameters	—	117B
Open weights	No	Yes
Released	Jun 2026	Aug 2025

Nano Banana Pro (Gemini 3 Pro Image) details →GPT OSS 120B details →

FAQ

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