Is GLM5.3 Flash or OpenAI GPT-5.5 cheaper?

GLM5.3 Flash is cheaper on output tokens ($0.50 vs $30.00 per 1M).

Which has the larger context window, GLM5.3 Flash or OpenAI GPT-5.5?

GLM5.3 Flash has the larger context window (1M tokens).

GLM5.3 Flash vs OpenAI GPT-5.5

GLM5.3 Flash is cheaper on output tokens, while GLM5.3 Flash offers a larger context window. Choose GLM5.3 Flash or OpenAI GPT-5.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	GLM5.3 Flash	OpenAI GPT-5.5
Provider	DigitalOcean	DigitalOcean
Input / 1M tokens	$0.15	$5.00
Output / 1M tokens	$0.50	$30.00
Context window	1M	1M
Parameters	—	—
Open weights	Yes	No
Released	Aug 2026	Apr 2026

GLM5.3 Flash details →OpenAI GPT-5.5 details →

FAQ

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