Is claude-sonnet-4-5 or glm-5.1 cheaper?

glm-5.1 is cheaper on output tokens ($3.50 vs $15.00 per 1M).

Which has the larger context window, claude-sonnet-4-5 or glm-5.1?

Both models offer a similar context window.

claude-sonnet-4-5 vs glm-5.1

glm-5.1 is cheaper on output tokens. Choose claude-sonnet-4-5 or glm-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	claude-sonnet-4-5	glm-5.1
Provider	302.AI	302.AI
Input / 1M tokens	$3.00	$0.86
Output / 1M tokens	$15.00	$3.50
Context window	200K	200K
Parameters	—	754B
Open weights	No	No
Released	Sep 2025	Apr 2026

claude-sonnet-4-5 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.