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GLM 5.2 Fast

GLM 5.2 Fast is a faster-serving variant of GLM-5.2, Z.AI's flagship long-horizon coding model, released June 23, 2026. Same weights and 1M tokens context, served on inference infrastructure tuned for higher throughput. Your use is subject to Z.AI's Terms & Privacy Policies.

ReasoningTool UseImplicit Caching
import { streamText } from 'ai'
const result = streamText({
model: 'zai/glm-5.2-fast',
prompt: 'Why is the sky blue?'
})
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Providers

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.

Provider
Context
Max Output
Latency
Throughput
Input
Output
Cache
Web Search
Capabilities
ZDR
No Training
Regional Inference
Release Date
1M128K
$2.10/M
$6.60/M
Read:$0.21/M
Write:
06/23/2026
1M128K
$2.10/M
$6.60/M
Read:$0.21/M
Write:
US
06/23/2026
1M128K
$2.10/M
$6.60/M
Read:$0.21/M
Write:
06/23/2026
1M128K
$2.80/M
$8.80/M
Read:$0.56/M
Write:
06/23/2026