Is GPT-OSS-120B or Mistral Medium 3.5 128B cheaper?

GPT-OSS-120B is cheaper on output tokens ($0.83 vs $5.50 per 1M).

Which has the larger context window, GPT-OSS-120B or Mistral Medium 3.5 128B?

Mistral Medium 3.5 128B has the larger context window (262K tokens).

GPT-OSS-120B vs Mistral Medium 3.5 128B

GPT-OSS-120B is cheaper on output tokens, while Mistral Medium 3.5 128B offers a larger context window. Choose GPT-OSS-120B or Mistral Medium 3.5 128B based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-OSS-120B	Mistral Medium 3.5 128B
Provider	Berget.AI	Berget.AI
Input / 1M tokens	$0.22	$1.65
Output / 1M tokens	$0.83	$5.50
Context window	128K	262K
Parameters	117B	—
Open weights	Yes	Yes
Released	Aug 2025	Apr 2026

GPT-OSS-120B details →Mistral Medium 3.5 128B details →

FAQ

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