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Z.ai (Zhipu AI / GLM)

Ongoing verified 2026-10-08 · 2d ago no cardno phonecommercial OKOpenAI-compatible

A permanently-free model with no trial clock

Official docs ↗Visit website ↗Report a change

What's free

GLM-4.5-Flash, GLM-4.7-Flash (text), and GLM-4.6V-Flash (vision) are officially listed as $0 cost (input, cached input, and output) on a permanent basis

Credit card
not required
Phone verification
not required
Commercial use
allowed

Free limits

Numeric limits are not recorded in structured form for this provider.

In the provider's words

Not specified with concrete RPM/TPM figures in public docs

The catch

Terms of Use prohibit using Z.ai to "develop, train, or enhance any algorithms, models, or technologies that directly or indirectly compete with us" — otherwise general use, including commercial, isn't restricted

PlanOngoing free tier
How it renewsFree with no end date
Expiresno expiry
Modalitiestext, vision
OpenAI base URLhttps://api.z.ai/api/paas/v4/

Free models · sample

glm-4.7-flashglm-4.5-flashglm-4.6v-flash

A sample of models reachable on the free tier — the live catalog changes. Pull the current set with GET https://api.z.ai/api/paas/v4//models.

Quickstart — chat completions

from openai import OpenAI

client = OpenAI(base_url="https://api.z.ai/api/paas/v4/", api_key="<YOUR_FREE_API_KEY>")
resp = client.chat.completions.create(
    model="glm-4.7-flash",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(resp.choices[0].message.content)

…or with curl:

curl https://api.z.ai/api/paas/v4//chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"glm-4.7-flash","messages":[{"role":"user","content":"Hello!"}]}'

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Change history

How this free tier has changed since we started tracking it (2026-07-30) — generated from the git history of providers.json.

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