GLM-5.3-Flash
$0.15/Mtok inNative multimodal coding model at the lowest rate in the catalog.
Playground
Try it in the browser
Facts
At a glance
Availability
Live
Pricing
$0.15 / M input · $0.5 / M output
Endpoint
Chat Completions
/v1/chat/completions
Context window
1,000k tokens
API
Call it from code
import OpenAI from "openai"
const client = new OpenAI({
baseURL: "https://api.companyfabric.com/v1",
apiKey: process.env.COMPANYFABRIC_API_KEY,
})
const res = await client.chat.completions.create({
model: "z-ai/glm-5-3-flash",
max_tokens: 1024,
temperature: 0.7,
messages: [{ role: "user", content: "Say hello from the fabric." }],
})
console.log(res.choices[0].message.content)FAQ
Frequently asked questions
How much does GLM-5.3-Flash cost?
$0.15 / M input · $0.5 / M output. The exact cost of each call is shown before you run it and metered to your prepaid balance, no subscription required.
Why use GLM-5.3-Flash on CompanyFabric instead of going direct?
One key and one balance across every model in the library, at pricing at parity with or below the direct API. Switching models is a one-line change.
Is GLM-5.3-Flash available through the OpenAI SDK?
Yes, point any OpenAI SDK at api.companyfabric.com/v1 and set model to "z-ai/glm-5-3-flash".
Variants
Same family
GLM-5.2
$1.4/Mtok inZ.ai
Z.ai's open-weight frontier challenger, strong coding and reasoning with one of the best free tiers in class.
Added 1 Aug 2026 · text
GLM-5.3
$1.4/Mtok inZ.ai
Z.ai's flagship coding and agent model, GLM-5.2's base post-trained further, at the same price.
Added 23 Sep 2026 · text
GLM-Legal
Coming soonZ.ai
Z.ai's legal model, built on GLM-5.3-Flash, for contract review, evidence analysis and compliance. API access by application for now.
Announced 12 Oct 2026 · text
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Run GLM-5.3-Flash with free starter credits. Free starter credits included, no subscription required.