The build engine that does not stop when one AI does
A multi-provider AI build engine runs your build across several AI providers instead of depending on one. YaniMax spans Anthropic Claude, OpenAI Codex, Kimi, and Google Gemini: when one provider hits a usage limit mid-build, the engine fails over to the next and keeps working, so the build finishes instead of stalling.
The Yani team ·
Why do single-provider build tools stall?
Every AI provider has limits — usage caps, rate limits, the occasional outage. That is normal, and for a chat assistant it is a minor annoyance: you wait a while and ask again. For a build agent it is a different story, because a real build is long. An agent producing a full-stack site works through many steps — pages, database, sign-in, deployment — and a long run is exactly when limits get hit.
When a tool depends on one provider, hitting that limit means the build stops at step seven of nine. Your afternoon is gone, the site is half-built, and the fix is "wait and retry" — the very thing you came to an AI builder to escape. We kept hitting this while building with these tools ourselves, which is why we built the engine differently.
What is YaniMax, exactly?
YaniMax is one build engine that spans four AI providers — Anthropic Claude, OpenAI Codex, Kimi, and Google Gemini — on account logins, with automatic failover between them. You do not pick a model or juggle API keys; you pick an outcome, and the engine worries about which provider does the work.
The failover is the point. If the provider currently building your site hits its usage limit, the engine hands the work to the next healthy provider and continues — mid-build, without you noticing, without starting over. The measure of a build engine is not which model it uses on a good day; it is whether your build finishes on a bad one.
How do YaniMax and YaniLite compare?
Two engines, one idea: a build should not depend on a single provider having a good day.
| YaniMax | YaniLite | |
|---|---|---|
| What it is | The premium build engine | The free build engine |
| Providers and models | Anthropic Claude, OpenAI Codex, Kimi, Google Gemini | DeepSeek v4 Flash Free, MiMo Free, Gemma |
| When a limit is hit | Automatic failover to the next provider, mid-build | Round-robins across its free models |
| Cost | On paid plans | Free |
| Best for | Complex, full-stack builds | First tries and lighter builds |
What does YaniLite offer for free?
YaniLite is the same idea at zero cost: a free engine that rotates across free models — DeepSeek v4 Flash Free, MiMo Free, and Gemma — so you can take a real first pass at your site without paying anything. It is how most people should start.
We are honest about its ceiling. When a request looks heavy for the free models, Yani says so in the product itself — "This looks complex for YaniLite (free). Switch to YaniMax for better performance and output." — and you decide. Paid plans start at $20 a month — the full breakdown of what each includes is at yani.im/pricing; the full breakdown is at /pricing. And if you want to see what an engine like this actually builds, the step-by-step walkthrough is at /blog/how-to-build-a-website-with-an-ai-agent.
Frequently asked questions
Do I need my own API keys for Claude, Codex, Kimi, or Gemini?
No. The engines are part of Yani — you subscribe to a Yani plan and the engine handles the providers. You never create, fund, or manage a provider API key.
Can I choose which provider builds my site?
You choose the engine — YaniMax or YaniLite — and the engine chooses the provider. That indirection is what makes failover possible: if picking a provider were up to you, its limit would become your problem again.
Does failover change the quality of my build midway?
Providers do differ, and we will not pretend otherwise. The engine exists to get your build finished; you then review the result in the preview, and anything you want changed is one chat message away — with version control to roll back any step.
Is YaniLite actually free, or a trial?
Actually free. It runs on free models, which is what makes that price honest — no trial clock. Its ceiling is lower than YaniMax, and the product tells you when a request would be better served by upgrading.
Start on the free engine. See how far it gets you.
Describe a build, watch YaniLite take a pass at it, and switch to YaniMax when your project outgrows free.