Synapse Garden
Z.AI · Single modalityReleased 2025-07-28

glm-4.5

zai/glm-4.5 id

GLM-4.5 and GLM-4.5-Air are our latest flagship models, purpose-built as foundational models for agent-oriented applications. Both leverage a Mixture-of-Experts (MoE) architecture. GLM-4.5 has a total parameter count of 355B with 32B active parameters per forward pass, while GLM-4.5-Air adopts a more streamlined design with 106B total parameters and 12B active parameters.

ReasoningTool use
Type
Use glm-4.5
# Drop-in OpenAI-compatible client
$ import { generateText } from 'ai'
$ 
$ const { text } = await generateText({
$   model: 'zai/glm-4.5',
$   baseURL: 'https://synapse.garden/api/v1',
$   apiKey: process.env.MG_KEY,
$   prompt: 'Why is the sky blue?',
$ })
128K
CONTEXT WINDOW
96K
MAX OUTPUT
$0.660/M
INPUT · PER M
$2.42/M
OUTPUT · PER M
PRICING

List prices, every modality.

RatePer million tokens · USD
Input$0.660/M
Output$2.42/M
Cache read$0.121/M
Honest list pricesHow we calculate prices
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FAQ · GLM-4.5

Frequently asked

01 / 04

How do I call glm-4.5 from my code?

Use the OpenAI or Anthropic SDK and point baseURL at https://synapse.garden/api/v1. Set model: ‘zai/glm-4.5’ and supply your Synapse Garden API key. No code changes beyond the base URL.

02 / 04

How much does glm-4.5 cost?

Input: $0.660/M per million tokens. Output: $2.42/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-4.5?

glm-4.5 supports a context window of 128K tokens, with a maximum output of 96K 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-4.5 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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