Is GPT OSS 20B or Gemini 3 Flash Preview cheaper?

GPT OSS 20B is cheaper on output tokens ($0.20 vs $3.00 per 1M).

Which has the larger context window, GPT OSS 20B or Gemini 3 Flash Preview?

Gemini 3 Flash Preview has the larger context window (1M tokens).

GPT OSS 20B vs Gemini 3 Flash Preview

GPT OSS 20B is cheaper on output tokens, while Gemini 3 Flash Preview offers a larger context window. Choose GPT OSS 20B or Gemini 3 Flash Preview based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT OSS 20B	Gemini 3 Flash Preview
Provider	Neon	Neon
Input / 1M tokens	$0.05	$0.50
Output / 1M tokens	$0.20	$3.00
Context window	131K	1M
Parameters	21B	—
Open weights	Yes	No
Released	Aug 2025	Dec 2025

GPT OSS 20B details →Gemini 3 Flash Preview details →

FAQ

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