Is Kimi K2 (09/05) or Anthropic: Claude Opus 4.1 cheaper?

Kimi K2 (09/05) is cheaper on output tokens ($2.00 vs $75.00 per 1M).

Which has the larger context window, Kimi K2 (09/05) or Anthropic: Claude Opus 4.1?

Kimi K2 (09/05) has the larger context window (262K tokens).

Kimi K2 (09/05) vs Anthropic: Claude Opus 4.1

Kimi K2 (09/05) is cheaper on output tokens, while Kimi K2 (09/05) offers a larger context window. Choose Kimi K2 (09/05) or Anthropic: Claude Opus 4.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Kimi K2 (09/05)	Anthropic: Claude Opus 4.1
Provider	Helicone	Helicone
Input / 1M tokens	$0.50	$15.00
Output / 1M tokens	$2.00	$75.00
Context window	262K	200K
Parameters	—	—
Open weights	No	No
Released	Sep 2025	Aug 2025

Kimi K2 (09/05) details →Anthropic: Claude Opus 4.1 details →

FAQ

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