Infron Free AI Models
Selected :free model variants at $0 per token via Infron's OpenAI-compatible API
What you get from Infron Free AI Models for free
Overview
Infron is a usage-based LLM router that offers selected model variants with a :free suffix at $0.00 per token — requests to free models never deduct from your credit balance. All models are served through a single OpenAI-compatible endpoint.
Free Tier Quotas & Limits
- Daily Allowance: 1,000 requests per day per account, pooled across all standard free models combined (not per-model).
- Reset Time: Daily at 00:00 UTC.
- Rate Limits: Free model requests remain subject to Infron's default per-account rate limits.
Key Free Models
- Free variants are identified by a
:freesuffix, e.g.deepseek/deepseek-v4.1-flash:free. The full current lineup is available from the/v1/modelsendpoint (filter for:free). - A limited-time promotion of
qwen/qwen3.8-max-preview:free(1M-token context, up to 64K output tokens, tool calling, JSON mode, streaming) ended July 28, 2026. - Free variants may route to different providers than their paid counterparts and are served from a shared pool with no SLA; the lineup changes over time.
How to Get Started
- Create an account at infron.ai/login using email or Google sign-in.
- Create an API key at infron.ai/dashboard/apiKeys.
- Call
https://llm.onerouter.pro/v1/chat/completionswithAuthorization: Bearer $INFRON_API_KEYand a:freemodel ID. The endpoint is OpenAI-compatible, and the Anthropic SDK works with the base URLhttps://llm.onerouter.pro.
Before you claim
- Payment card: Not needed.
- Account: Sign up with the provider.
Key limits
- 1,000 requests/day per account, shared across all standard free models, resets 00:00 UTC
- Standard free models require a $5+ balance (not spent; anti-abuse)
- New accounts start at $0 balance
- Default per-account rate limits still apply
- Free variants may route to different providers and run on a shared public pool without SLA
Eligibility
- Standard free models require an account balance of $5 or more — held, not spent, as an anti-abuse requirement. Requests fail with an error if the balance falls below $5.
- Credit top-ups incur a 5% + $0.35 platform fee per transaction.
Ollama (MIT) runs on your own machine with no quota.
Serves open-weight models locally with no daily request cap.
Models served free
Limits as the provider publishes them; a dash means none is published.
| Model | Context | RPM | RPD | TPM | Tools | Vision |
|---|---|---|---|---|---|---|
| deepseek/deepseek-v4.1-flash:freeStandard free model; 1,000 requests/day per account shared across free models; requires a $5+ balance | 1,000k | — | 1,000 | — | yes | yes |
Will this fit my app? Check it in the rate-limit calculator (prefilled with its published daily cap at ~800 tokens per request).
History
Verified by a person on · last automated check : no change found. Automated findings never change this page until a person confirms them (how we verify).
- Terms updatedby a person · Content updated from https://llm.onerouter.pro/v1/models (checked 2026-10-21).
- Verifiedby a person
- Listedby a person
Full history with screenshots · How we verified this offer · Sitewide changelog
Still works?
Work at infron.ai? Add an aifree.dev badge
<a href="https://aifree.dev/offer/infron-free-models"><img src="https://aifree.dev/badge/infron-free-models" alt="Infron Free AI Models on aifree.dev" height="20"></a>[](https://aifree.dev/offer/infron-free-models)Step-by-step guide
Appears in
More free API credits
Related offers
Free models: DeepSeek-V4-Flash, DeepSeek-V4-Flash-Vision-Exp, Qwen3.8-Flash-Next, MiniCPM5-2B
100,000 tokens/day - Basic and free models only; premium models require a paid plan
30M tokens/month on the free tier (input + output, incl. reasoning)
$200 credit valid for 30 days only
500,000 tokens/month - 80 requests/minute and 100,000 tokens/minute on the free plan