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Description

GLM-5.3 is Z.ai's reasoning model with a 1M-token context window, built for complex software engineering and long-horizon agent tasks.

OpenAI's frontier model for complex professional workloads. 1M token context, text + image input, native computer use.

I/O price /1M

$1.40/$4.40

$5.00/$30.00

Input /1M

$1.40

$5.00

Output /1M

$4.40

$30.00

Cached in /1M

$0.26

$0.5

Context

1.05M

Δ input since launch

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Δ output since launch

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Released

Aug 2026

Apr 2026

Status

—

Provider

Z Z.ai

OpenAI