Is Claude Sonnet 4 or Kimi K2.5 cheaper?

Kimi K2.5 is cheaper on output tokens ($3.02 vs $15.00 per 1M).

Which has the larger context window, Claude Sonnet 4 or Kimi K2.5?

Claude Sonnet 4 has the larger context window (1M tokens).

Claude Sonnet 4 vs Kimi K2.5

Kimi K2.5 is cheaper on output tokens, while Claude Sonnet 4 offers a larger context window. Choose Claude Sonnet 4 or Kimi K2.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Claude Sonnet 4	Kimi K2.5
Provider	ZenMux	ZenMux
Input / 1M tokens	$3.00	$0.58
Output / 1M tokens	$15.00	$3.02
Context window	1M	262K
Parameters	—	1T
Open weights	No	No
Released	May 2025	Jan 2026

Claude Sonnet 4 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.