Is OpenAI GPT 120B or GLM 5 cheaper?

OpenAI GPT 120B is cheaper on output tokens ($0.50 vs $3.15 per 1M).

Which has the larger context window, OpenAI GPT 120B or GLM 5?

GLM 5 has the larger context window (203K tokens).

OpenAI GPT 120B vs GLM 5

OpenAI GPT 120B is cheaper on output tokens, while GLM 5 offers a larger context window. Choose OpenAI GPT 120B or GLM 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	OpenAI GPT 120B	GLM 5
Provider	Baseten	Baseten
Input / 1M tokens	$0.10	$0.95
Output / 1M tokens	$0.50	$3.15
Context window	128K	203K
Parameters	—	744B
Open weights	Yes	Yes
Released	Aug 2025	Feb 2026

OpenAI GPT 120B details →GLM 5 details →

FAQ

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