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Description

GLM 5.1 is Z.ai's foundation model with a 202K-token context window for processing extended documents and conversations.

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

I/O price /1M

$0.966/$3.04

$5.00/$30.00

Input /1M

$0.966

$5.00

Output /1M

$3.04

$30.00

Cached in /1M

$0.1794

$0.5

Context

200K

Δ input since launch

1.4%

—

Δ output since launch

1.4%

—

Released

Apr 2026

Status

—

Provider

Z Z.ai

OpenAI