Z.AI · Single modalityReleased 2026-06-16

glm-5.2-fast

zai/glm-5.2-fast id

GLM-5.2 delivers powerful coding capabilities, usable 1M-context support, and continued strengths in long-horizon tasks.

ReasoningTool use

Type

Use glm-5.2-fast

# Drop-in OpenAI-compatible client
$ import { generateText } from 'ai'
$ 
$ const { text } = await generateText({
$   model: 'zai/glm-5.2-fast',
$   baseURL: 'https://synapse.garden/api/v1',
$   apiKey: process.env.MG_KEY,
$   prompt: 'Why is the sky blue?',
$ })

CONTEXT WINDOW

128K

MAX OUTPUT

$3.30/M

INPUT · PER M

$11.28/M

OUTPUT · PER M

PRICING

List prices, every modality.

Rate	Per million tokens · USD
Input	$3.30/M
Output	$11.28/M
Cache read	$0.550/M

Honest list pricesHow we calculate prices

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Model

Input

Output

Context

Type

FAQ · GLM-5.2-FAST

Frequently asked

01 / 04

How do I call glm-5.2-fast from my code?

Use the OpenAI or Anthropic SDK and point baseURL at https://synapse.garden/api/v1. Set model: ‘zai/glm-5.2-fast’ and supply your Synapse Garden API key. No code changes beyond the base URL.

02 / 04

How much does glm-5.2-fast cost?

Input: $3.30/M per million tokens. Output: $11.28/M per million tokens. The free tier includes a million tokens every month at no cost.

03 / 04

What's the context window for glm-5.2-fast?

glm-5.2-fast supports a context window of 1M tokens, with a maximum output of 128K tokens.

04 / 04

Do I need a separate Anthropic or OpenAI account?

No. Synapse Garden is the single API surface — one key gives you OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek, xAI, Cohere, and more. Billing, rate limits, and audit logs are unified.

READY

Try glm-5.2-fast in three minutes.

Sign up, create a key, drop our base URL into your existing client. The free tier includes a million tokens every month — no credit card.

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