Is GLM 5.2 Fast or GPT-3.5 Turbo Instruct cheaper?

GPT-3.5 Turbo Instruct is cheaper on output tokens ($2.00 vs $10.25 per 1M).

Which has the larger context window, GLM 5.2 Fast or GPT-3.5 Turbo Instruct?

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

GLM 5.2 Fast vs GPT-3.5 Turbo Instruct

GPT-3.5 Turbo Instruct is cheaper on output tokens, while GLM 5.2 Fast offers a larger context window. Choose GLM 5.2 Fast or GPT-3.5 Turbo Instruct based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM 5.2 Fast	GPT-3.5 Turbo Instruct
Provider	Vercel AI Gateway	Vercel AI Gateway
Input / 1M tokens	$3.00	$1.50
Output / 1M tokens	$10.25	$2.00
Context window	1M	8K
Parameters	—	20B
Open weights	No	No
Released	Jun 2026	Sep 2023

GLM 5.2 Fast details →GPT-3.5 Turbo Instruct details →

FAQ

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