Is Moonshot Kimi K2 Instruct or GLM-5.1 cheaper?

Moonshot Kimi K2 Instruct is cheaper on output tokens ($2.29 vs $3.48 per 1M).

Which has the larger context window, Moonshot Kimi K2 Instruct or GLM-5.1?

GLM-5.1 has the larger context window (203K tokens).

Moonshot Kimi K2 Instruct vs GLM-5.1

Moonshot Kimi K2 Instruct is cheaper on output tokens, while GLM-5.1 offers a larger context window. Choose Moonshot Kimi K2 Instruct or GLM-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Moonshot Kimi K2 Instruct	GLM-5.1
Provider	Alibaba (China)	Alibaba (China)
Input / 1M tokens	$0.57	$0.87
Output / 1M tokens	$2.29	$3.48
Context window	131K	203K
Parameters	—	754B
Open weights	Yes	Yes
Released	Jan 2025	Apr 2026

Moonshot Kimi K2 Instruct details →GLM-5.1 details →

FAQ

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