Is Nemotron 3 Ultra 550B A55B or GPT OSS 20B cheaper?

GPT OSS 20B is cheaper on output tokens ($0.00 vs $2.50 per 1M).

Which has the larger context window, Nemotron 3 Ultra 550B A55B or GPT OSS 20B?

Nemotron 3 Ultra 550B A55B has the larger context window (1M tokens).

Nemotron 3 Ultra 550B A55B vs GPT OSS 20B

GPT OSS 20B is cheaper on output tokens, while Nemotron 3 Ultra 550B A55B offers a larger context window. Choose Nemotron 3 Ultra 550B A55B or GPT OSS 20B based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Nemotron 3 Ultra 550B A55B	GPT OSS 20B
Provider	Nvidia	Nvidia
Input / 1M tokens	$0.50	$0.00
Output / 1M tokens	$2.50	$0.00
Context window	1M	131K
Parameters	—	21B
Open weights	Yes	Yes
Released	Jun 2026	Aug 2025

Nemotron 3 Ultra 550B A55B 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.