GLM 5.3

Available

z-ai/glm-5.3

Z.ai's flagship GLM 5.3 reasoning model for complex software engineering and long-running agent tasks, with a 1M-token context window.

Chat
1.05M context
131K max output
Tools

Try in Playground Compare

Pricing

Input: $0.70 / 1M tokens
Output: $2.20 / 1M tokens
Cached input: $0.13 / 1M tokens

What it costs

A typical request: 2,000 tokens in, 500 out$0.0025

1,000 of those requests$2.50

Performance on SparrowCodes

Measured from real requests over the last 7 days.

Throughput: 122 tok/s
First token: 2.65 s
Latency: 3.03 s
Success rate: 100.0%

Medians across 3 requests.

Official benchmarks

Scores published by the model's maker, under their test conditions.

The maker hasn't published benchmark scores we could verify for this model.

Specifications

Type: Chat
Served by: SparrowCodes
Context window: 1,048,576 tokens
Maximum output: 131,072 tokens
Input types: Text
Tool calling: Supported

Use it

curl https://api.sparrowcodes.com/v1/chat/completions \
  -H "Authorization: Bearer $SPARROW_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "z-ai/glm-5.3",
    "messages": [{"role": "user", "content": "Explain rate limiting in one paragraph."}]
  }'

Set "model" to z-ai/glm-5.3. The response includes its exact cost.

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