Is Kimi K2.5 or GPT OSS 120B cheaper?

GPT OSS 120B is cheaper on output tokens ($0.15 vs $2.03 per 1M).

Which has the larger context window, Kimi K2.5 or GPT OSS 120B?

Kimi K2.5 has the larger context window (256K tokens).

Kimi K2.5 vs GPT OSS 120B

GPT OSS 120B is cheaper on output tokens, while Kimi K2.5 offers a larger context window. Choose Kimi K2.5 or GPT OSS 120B based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Kimi K2.5	GPT OSS 120B
Provider	OpenRouter	OpenRouter
Input / 1M tokens	$0.38	$0.03
Output / 1M tokens	$2.03	$0.15
Context window	256K	131K
Parameters	1T	117B
Open weights	Yes	Yes
Released	Jan 2026	Aug 2025

Kimi K2.5 details →GPT OSS 120B details →

FAQ

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