X420.ai

Your hub for 400+ AI models — one API, intelligent routing, drastically lower costs.

Instead of juggling multiple AI subscriptions, X420.ai gives you a single OpenAI-compatible endpoint backed by 400+ models from OpenRouter. The platform automatically routes each request to the best-suited model for the task, so you get the highest quality output while spending as little as possible.

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400+ models, one key.

GPT-4o, Claude, Gemini, Mistral, Llama — all accessible from a single integration.

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Smart routing.

The platform selects the most cost-efficient model that meets the quality bar for your task.

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Pay as you go.

Prepaid wallet, charged by the token. No monthly commitments, no surprise bills.

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Drop-in replacement.

100% OpenAI SDK compatible — swap the base URL, keep your code.