Is Claude Opus 4.5 or Kimi K2.5 cheaper?

Kimi K2.5 is cheaper on output tokens ($3.02 vs $25.00 per 1M).

Which has the larger context window, Claude Opus 4.5 or Kimi K2.5?

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

Claude Opus 4.5 vs Kimi K2.5

Kimi K2.5 is cheaper on output tokens, while Kimi K2.5 offers a larger context window. Choose Claude Opus 4.5 or Kimi K2.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Opus 4.5	Kimi K2.5
Provider	ZenMux	ZenMux
Input / 1M tokens	$5.00	$0.58
Output / 1M tokens	$25.00	$3.02
Context window	200K	262K
Parameters	—	1T
Open weights	No	No
Released	Nov 2025	Jan 2026

Claude Opus 4.5 details →Kimi K2.5 details →

FAQ

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