GLM 5.3 Flash
GLM-5.3-Flash is Z.ai’s native multimodal coding model, featuring 320B total parameters, 18B activated parameters, and a 1M-token context window. Its efficient hybrid attention architecture supports visual coding, tool use, and end-to-end professional workflows across code, browsers, documents, and graphical interfaces. Your use is subject to Z.AI's Terms & Privacy Policies.
import { streamText } from 'ai'
const result = streamText({ model: 'zai/glm-5.3-flash', prompt: 'Why is the sky blue?'})Copy link to headingPlayground
Try out GLM 5.3 Flash by Z.AI. Usage is billed to your team at API rates. Free users (those who haven't made a payment) get $5 of credits every 30 days.
GLM 5.3 Flash
GLM 5.3 Flash
Copy link to headingProviders
Route requests across multiple providers. Copy a provider slug to set your preference. Visit the docs for more info. Using a provider means you agree to their terms, listed under Legal.
Copy link to headingThroughput24 hours
P50 throughput on live AI Gateway traffic, in tokens per second (TPS). Visit the docs for more info.
Copy link to headingLatency24 hours
P50 time to first token (TTFT) on live AI Gateway traffic, in milliseconds. View the docs for more info.
Copy link to headingUptime24 hours
Direct request success rate on AI Gateway and per-provider. Visit the docs for more info.
Copy link to headingMore models by Z.AI
| Model |
|---|
| 1M | 3.4s | 77tps | $1.40/M | $4.40/M | Read:$0.26/M Write:— | — | | 08/18/2026 | ||||||
| 1M | 0.5s | 202tps | $2.10/M | $6.60/M | Read:$0.21/M Write:— | — |    | 06/23/2026 | ||||||
| 1M | 0.3s | 232tps | $0.70/MFast $2.10/M | $2.20/MFast $6.60/M | Read:$0.11/M Write:— | — |  +15 | 06/16/2026 | ||||||
| 205K | 0.9s | 41tps | $1.40/M | $4.40/M | Read:$0.26/M Write:— | — |   | 04/07/2026 | ||||||
| 203K | 0.7s | 129tps | $0.80/M | $2.56/M | Read:$0.16/M Write:— | — |  +1 | 02/12/2026 | ||||||
| 200K | 0.8s | 127tps | $0.06/M | $0.40/M | Read:$0.01/M Write:— | — | | 01/19/2026 |