GLM 5.3
z-ai/glm-5.3
GLM-5.3 is a large-scale reasoning model from Z.ai, built for complex software engineering and long-horizon agent tasks.
Key facts
- Input price
- $0.079 / 1M tokens
- Output price
- $4.80 / 1M tokens
- Context window
- 1M tokens
- Max output
- 944K tokens
- Accepts
- Text
- Returns
- Text
Example: 1,000 requests with 1,000 input and 500 output tokens each would cost about $2.48 (1M input tokens × $0.079 + 0.5M output tokens × $4.80). Estimate your own usage.
Prices are the provider’s own per-token rates with zero markup, from our price list as of Oct 18, 2026. If a call has extra provider charges (images, audio, web search, cached prompts), you pay the reported cost.
Call it from your code
curl https://api.tokenctr.com/v1/chat/completions \
-H "Authorization: Bearer $TOKENCENTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model": "z-ai/glm-5.3", "messages": [{"role": "user", "content": "Hello!"}]}'Works with any OpenAI-compatible SDK: set the base URL to https://api.tokenctr.com/v1. Quickstart
Benchmarks
Artificial Analysis
- Intelligence index
- 44.8
- Coding index
- 74.8
- Agentic index
- 53.1
Design Arena
| Category | Rank | Elo | Win rate |
|---|---|---|---|
| Models: SVG | 8 | 1291 | 56.7% |
| Agents: Slides (python-pptx) | 8 | 1255 | 51.2% |
| Agents: HTML slides | 9 | 1189 | 39.1% |
| Models: 3D | 13 | 1333 | 59.5% |
| Models: Game dev | 13 | 1315 | 52.5% |
| Models: Code | 14 | 1307 | 54.2% |
| Models: UI components | 14 | 1314 | 57% |
| Models: Websites | 15 | 1298 | 54.1% |
| Agents: Mobile apps | 17 | 1191 | 52.2% |
| Models: ASCII art | 20 | 1213 | 47.2% |
| Models: Data visualization | 30 | 1260 | 51.7% |
Source: Artificial Analysis indexes and Design Arena results as published in OpenRouter’s model data, fetched Oct 15, 2026. Higher is better. Not measured by TokenCenter. See all rankings.