Is GPT-5.6 Terra or GLM-4.5 cheaper?

GLM-4.5 is cheaper on output tokens ($2.20 vs $12.00 per 1M).

Which has the larger context window, GPT-5.6 Terra or GLM-4.5?

GPT-5.6 Terra has the larger context window (1.1M tokens).

GPT-5.6 Terra vs GLM-4.5

GLM-4.5 is cheaper on output tokens, while GPT-5.6 Terra offers a larger context window. Choose GPT-5.6 Terra or GLM-4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-5.6 Terra	GLM-4.5
Provider	DevPass (LLM Gateway)	DevPass (LLM Gateway)
Input / 1M tokens	$2.00	$0.60
Output / 1M tokens	$12.00	$2.20
Context window	1.1M	131K
Parameters	—	355B
Open weights	No	Yes
Released	Jul 2026	Jul 2025

GPT-5.6 Terra details →GLM-4.5 details →

FAQ

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