Is openai/gpt-oss-120b or moonshotai/Kimi-K2.5 cheaper?

openai/gpt-oss-120b is cheaper on output tokens ($0.45 vs $2.25 per 1M).

Which has the larger context window, openai/gpt-oss-120b or moonshotai/Kimi-K2.5?

moonshotai/Kimi-K2.5 has the larger context window (262K tokens).

openai/gpt-oss-120b vs moonshotai/Kimi-K2.5

openai/gpt-oss-120b is cheaper on output tokens, while moonshotai/Kimi-K2.5 offers a larger context window. Choose openai/gpt-oss-120b or moonshotai/Kimi-K2.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	openai/gpt-oss-120b	moonshotai/Kimi-K2.5
Provider	SiliconFlow	SiliconFlow
Input / 1M tokens	$0.05	$0.45
Output / 1M tokens	$0.45	$2.25
Context window	131K	262K
Parameters	117B	1T
Open weights	No	Yes
Released	Aug 2025	Jan 2026

openai/gpt-oss-120b details →moonshotai/Kimi-K2.5 details →

FAQ

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