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GLM 5.3 Flash is a fast, low-cost open model for everyday coding tasks. It pairs the GLM 5.3 architecture with low latency and aggressive pricing, making it the default workhorse for high-volume applications.

Specifications

Pricing

A 30% automatic discount is applied to all GLM 5.3 Flash usage on MatterAI.

Quick Start

cURL
OpenAI NodeJS SDK
OpenAI Python SDK

When to Use

GLM 5.3 Flash is built for volume: chat assistants, code completion, classification and extraction, summarization, and any workload where latency and cost matter more than maximum reasoning depth.