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Z.ai · API model

GLM 5.3 Flash

GLM-5.3-Flash is a native multimodal model from Z.ai. It is suited for efficient coding and long-horizon agent tasks. Its hybrid sparse and linear attention architecture maintains accurate long-context behavior while...

Context
1.05M
Input / 1M
$0.0285
Output / 1M
$0.0923
Released
Aug 26, 2026
Specifications

GLM 5.3 Flash specs

Provider
Z.ai
Type
API model
Model ID
z-ai/glm-5.3-flash
Context window
1,048,576 tokens1.05M
Input price
$0.0285per 1M input tokens
Output price
$0.0923per 1M output tokens
Accepts
image, text, video
Produces
text
Released
Aug 26, 2026
Popularity
57/100position #2 in OpenRouter's weekly usage ranking
Source
OpenRouter
Overview

About GLM 5.3 Flash

GLM 5.3 Flash is an API model from Z.ai, released on Aug 26, 2026, with a context window of 1,048,576 tokens, pricing of $0.0285 per million input tokens and $0.0923 per million output tokens. It accepts image, text, video input and produces text output.

At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.00038.

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.

Tool callingStructured outputsJSON modeReasoning
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FAQ

GLM 5.3 Flash questions

What is the context window of GLM 5.3 Flash?

GLM 5.3 Flash supports a context window of 1,048,576 tokens.

How much does GLM 5.3 Flash cost?

GLM 5.3 Flash is listed at $0.0285 per million input tokens and $0.0923 per million output tokens on OpenRouter.

When was GLM 5.3 Flash released?

GLM 5.3 Flash was published on Aug 26, 2026.

What inputs does GLM 5.3 Flash accept?

GLM 5.3 Flash accepts image, text, video input and produces text output.