Z.ai (Zhipu) — free GLM Flash models
Z.ai lists GLM-4.7-Flash, GLM-4.5-Flash and the vision model GLM-4.6V-Flash as free on input, cached input and output.
- Deadline
- Rolling
- Access
- Sign-up
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Checked on the provider’s page
Who qualifies
Anyone with a Z.ai API account
The catch
Only the Flash models above are free; rate limits are not shown on the pricing page. Pricing pages change, so check before building on it. Newer GLM-5.x models are paid.
What you get
- GLM-4.7-Flash: free
- GLM-4.5-Flash: free
- GLM-4.6V-Flash (vision): free
- Flagship GLM-5.3 models are paid
At a glance
- Offer
- Free GLM Flash models
- Type
- Free tier
- Provider
- Z.ai
- Access
- Sign-up
- Eligibility
- Anyone with a Z.ai API account
- Deadline
- Rolling / no deadline given
- Last checked
- Sun, 25 Oct 2026
More like this
All free tiers →Gemini API — free tier with Google AI Studio
The Gemini API has a free tier with free input and output tokens on Gemini 3.x Flash and Flash-Lite models, no card needed.
- Anyone with a Google account
- Per-project RPM/TPM/RPD, see AI Studio
- Catch: Free-tier content may be used to improve Google products; paid tier does not. Rate limits are per project, can change and are not guaranteed. Flagship Gemini 4 Argon is paid only. Upgrading to Tier 1 requires linking billing.
Groq — free plan, no card
Groq's free plan gives rate-limited API access, e.g. gpt-oss-120b at 30 requests/min and 1,000 requests/day.
- Anyone with a Groq account
- 30 RPM - 1,000 req/day - 200K tokens/day
- Catch: Limits are per organization and per model; the docs say exact limits are on your account's Limits page and there may be exceptions. Developer plan needs a payment method. Not suited to production. The docs table is labelled as base limits, so confirm yours.
Cloudflare Workers AI — 10,000 free Neurons per day
Workers AI includes 10,000 Neurons a day at no charge on the free Workers plan, enough for light inference on open models.
- Anyone with a Cloudflare account
- 10,000 Neurons/day
- Catch: Free plan stops at the daily allocation; going over requires the Workers Paid plan. How far 10K Neurons goes depends on the model (large models burn it fast).
Mistral API — free mode with included monthly usage
Mistral's free mode lets you create API keys and use a limited included monthly usage, no prepaid credits needed.
- Anyone with a Mistral account
- Catch: The docs don't publish the included usage or exact rate limits; they are shown in the Admin Panel. Verification steps (like a phone number) are not described in the docs. Upgrade and pay-as-you-go uses prepaid credits.