Is GLM 5.2 (Free) or GPT-5.2-Pro cheaper?

GLM 5.2 (Free) is cheaper on output tokens ($0.00 vs $168.00 per 1M).

Which has the larger context window, GLM 5.2 (Free) or GPT-5.2-Pro?

GLM 5.2 (Free) has the larger context window (1M tokens).

GLM 5.2 (Free) vs GPT-5.2-Pro

GLM 5.2 (Free) is cheaper on output tokens, while GLM 5.2 (Free) offers a larger context window. Choose GLM 5.2 (Free) or GPT-5.2-Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.2 (Free)	GPT-5.2-Pro
Provider	ZenMux	ZenMux
Input / 1M tokens	$0.00	$21.00
Output / 1M tokens	$0.00	$168.00
Context window	1M	400K
Parameters	—	—
Open weights	Yes	No
Released	Jun 2026	Dec 2025

GLM 5.2 (Free) details →GPT-5.2-Pro details →

FAQ

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