GLM 5.3 Fast
Z.ai
Speed-optimized version of Z.AI’s GLM-5.3 agentic coding model, built for responsive, real-time workloads. It supports advanced coding, long-horizon task execution, testing, vulnerability discovery, and cybersecurity analysis, making it ideal for developer tools, coding agents, and complex multi-step engineering workflows.
- Language
- Reasoning
- Tool use
- Implicit caching
- open weights
- Structured output
- Context
- 1.0M
- Max output
- 262K
- Input / 1M
- $2.10
- Output / 1M
- $6.60
Quickstart
Point any OpenAI-compatible client at Maxynetic Systems and pass zai/glm-5.3-fast as the model.
curl https://api.maxynetic.com/v1/chat/completions \
-H "Authorization: Bearer $MAXYNETIC_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "zai/glm-5.3-fast",
"messages": [{ "role": "user", "content": "Explain routing in one line." }]
}'Pricing
Billed per token with no markup on the underlying provider rate.
Input
Per 1M prompt tokens
$2.10
Output
Per 1M completion tokens
$6.60
Cache read
Per 1M cached prompt tokens
$0.210
A 1M-token prompt with 250K tokens of output costs about $3.75.
Rates for this model vary by upstream provider; Maxynetic Systems routes to the cheapest healthy one by default.