Is GLM-5.3 (free) or o3-pro cheaper?

GLM-5.3 (free) is cheaper on output tokens ($0.00 vs $40.00 per 1M).

Which has the larger context window, GLM-5.3 (free) or o3-pro?

GLM-5.3 (free) has the larger context window (1M tokens).

GLM-5.3 (free) vs o3-pro

GLM-5.3 (free) is cheaper on output tokens, while GLM-5.3 (free) offers a larger context window. Choose GLM-5.3 (free) or o3-pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM-5.3 (free)	o3-pro
Provider	TokenRouter	Abacus
Input / 1M tokens	$0.00	$20.00
Output / 1M tokens	$0.00	$40.00
Context window	1M	200K
Parameters	—	—
Open weights	Yes	No
Released	Aug 2026	Jun 2025

GLM-5.3 (free) details →o3-pro details →

FAQ

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