Is Gemma 4 31B (free) or gpt-oss-20b cheaper?

Gemma 4 31B (free) is cheaper on output tokens ($0.00 vs $0.14 per 1M).

Which has the larger context window, Gemma 4 31B (free) or gpt-oss-20b?

Gemma 4 31B (free) has the larger context window (262K tokens).

Gemma 4 31B (free) vs gpt-oss-20b

Gemma 4 31B (free) is cheaper on output tokens, while Gemma 4 31B (free) offers a larger context window. Choose Gemma 4 31B (free) or gpt-oss-20b based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Gemma 4 31B (free)	gpt-oss-20b
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.00	$0.03
Output / 1M tokens	$0.00	$0.14
Context window	262K	131K
Parameters	—	21B
Open weights	Yes	Yes
Released	Apr 2026	Aug 2025

Gemma 4 31B (free) details →gpt-oss-20b details →

FAQ

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