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Z.ai · API model

GLM 5.3 Prime

GLM-5.3-Prime is the high-speed variant of Z.ai's GLM-5.3, inheriting its full capabilities while delivering 1.5–2× the output throughput through inference acceleration. It supports text input and output with a 1M-token...

Context
1M
Input / 1M
$2.8
Output / 1M
$8.8
Released
Sep 23, 2026
Specifications

GLM 5.3 Prime specs

Provider
Z.ai
Type
API model
Model ID
z-ai/glm-5.3-prime
Context window
1,000,000 tokens1M
Input price
$2.8per 1M input tokens
Output price
$8.8per 1M output tokens
Accepts
text
Produces
text
Released
Sep 23, 2026
Source
OpenRouter
Overview

About GLM 5.3 Prime

GLM 5.3 Prime is an API model from Z.ai, released on Sep 23, 2026, with a context window of 1,000,000 tokens, pricing of $2.8 per million input tokens and $8.8 per million output tokens. It accepts text input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.037.

Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.

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FAQ

GLM 5.3 Prime questions

What is the context window of GLM 5.3 Prime?

GLM 5.3 Prime supports a context window of 1,000,000 tokens.

How much does GLM 5.3 Prime cost?

GLM 5.3 Prime is listed at $2.8 per million input tokens and $8.8 per million output tokens on OpenRouter.

When was GLM 5.3 Prime released?

GLM 5.3 Prime was published on Sep 23, 2026.

What inputs does GLM 5.3 Prime accept?

GLM 5.3 Prime accepts text input and produces text output.