Is OpenAI: gpt-oss-20b or OpenAI: GPT-5.4 Nano cheaper?

OpenAI: gpt-oss-20b is cheaper on output tokens ($0.14 vs $1.25 per 1M).

Which has the larger context window, OpenAI: gpt-oss-20b or OpenAI: GPT-5.4 Nano?

OpenAI: GPT-5.4 Nano has the larger context window (400K tokens).

OpenAI: gpt-oss-20b vs OpenAI: GPT-5.4 Nano

OpenAI: gpt-oss-20b is cheaper on output tokens, while OpenAI: GPT-5.4 Nano offers a larger context window. Choose OpenAI: gpt-oss-20b or OpenAI: GPT-5.4 Nano based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	OpenAI: gpt-oss-20b	OpenAI: GPT-5.4 Nano
Provider	OpenAI	OpenAI
Input / 1M tokens	$0.03	$0.20
Output / 1M tokens	$0.14	$1.25
Context window	131K	400K
Parameters	21B	—
Open weights	Yes	No
Released	Aug 2025	Mar 2026

OpenAI: gpt-oss-20b details →OpenAI: GPT-5.4 Nano details →

FAQ

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