Is GPT OSS 120B or Claude Opus 4 cheaper?

GPT OSS 120B is cheaper on output tokens ($0.36 vs $75.00 per 1M).

Which has the larger context window, GPT OSS 120B or Claude Opus 4?

Claude Opus 4 has the larger context window (200K tokens).

GPT OSS 120B vs Claude Opus 4

GPT OSS 120B is cheaper on output tokens, while Claude Opus 4 offers a larger context window. Choose GPT OSS 120B or Claude Opus 4 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT OSS 120B	Claude Opus 4
Provider	Vertex	Vertex
Input / 1M tokens	$0.09	$15.00
Output / 1M tokens	$0.36	$75.00
Context window	131K	200K
Parameters	117B	—
Open weights	Yes	No
Released	Aug 2025	May 2025

GPT OSS 120B details →Claude Opus 4 details →

FAQ

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