Is GPT-3.5 Turbo or GLM 4.5 cheaper?

GLM 4.5 is cheaper on output tokens ($1.30 vs $1.50 per 1M).

Which has the larger context window, GPT-3.5 Turbo or GLM 4.5?

GLM 4.5 has the larger context window (128K tokens).

GPT-3.5 Turbo vs GLM 4.5

GLM 4.5 is cheaper on output tokens, while GLM 4.5 offers a larger context window. Choose GPT-3.5 Turbo or GLM 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GPT-3.5 Turbo	GLM 4.5
Provider	NanoGPT	NanoGPT
Input / 1M tokens	$0.50	$0.30
Output / 1M tokens	$1.50	$1.30
Context window	16K	128K
Parameters	20B	355B
Open weights	No	No
Released	Nov 2022	Apr 2025

GPT-3.5 Turbo 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.