GLM 5.3 Flash

z-ai/glm-5.3-flash

ox-alpha out of stealth! GLM-5.3 Flash is Z.ai's first natively multimodal GLM-5 model, with 320B total parameters and just 18B active parameters for efficient coding, agentic work, and precise 1M-token context. Its hybrid sparse-and-linear attention architecture helps it outperform GLM-5.2 at one-tenth the price while approaching Claude Opus 4.8 on coding and agentic benchmarks.

Vision
Reasoning
Video input
Tool calling
Structured output

Chat with this model Create an API key

Pricing

Includes our margin. Charged per request from your balance.

Input: $0.11 per 1M tokens
Output: $0.33 per 1M tokens
Cache read: $0.0275 per 1M tokens
Typical message: $0.00022

Details

Provider: Z.ai
Context: 1M tokens
Max output: 131K tokens
Added: Aug 26, 2026
Reasoning effort: low, high, max

Use it from the API

Replace $HIDE_API_KEY with a key from the Developers page. Base URL https://hide.st/api/v1.

curl https://hide.st/api/v1/chat/completions \
  -H "Authorization: Bearer $HIDE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/glm-5.3-flash",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'

Pricing

Details

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