Is Zai GLM-4.6 or OpenAI GPT-5 Nano cheaper?

OpenAI GPT-5 Nano is cheaper on output tokens ($0.40 vs $1.50 per 1M).

Which has the larger context window, Zai GLM-4.6 or OpenAI GPT-5 Nano?

OpenAI GPT-5 Nano has the larger context window (400K tokens).

Zai GLM-4.6 vs OpenAI GPT-5 Nano

OpenAI GPT-5 Nano is cheaper on output tokens, while OpenAI GPT-5 Nano offers a larger context window. Choose Zai GLM-4.6 or OpenAI GPT-5 Nano based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	Zai GLM-4.6	OpenAI GPT-5 Nano
Provider	Helicone	Helicone
Input / 1M tokens	$0.45	$0.05
Output / 1M tokens	$1.50	$0.40
Context window	205K	400K
Parameters	—	—
Open weights	No	No
Released	Jul 2024	Jan 2025

Zai GLM-4.6 details →OpenAI GPT-5 Nano details →

FAQ

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