A free AI model is winning over developers. And nobody knows whose servers it runs on

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An anonymous model called Ox Alpha appeared on OpenRouter last week, free to use with a million-token context window, and developers have been impressed. OpenRouter’s own listing says prompts and completions are retained by the unidentified provider.

A model that nobody will take credit for is being tested across the industry. Ox Alpha appeared on OpenRouter last Thursday as a stealth release from an anonymous third-party provider, free to use, with a context window of just over a million tokens.

The scale on offer is not modest. The open-source agent OpenCode said the model would be free for a week with near unlimited usage, and that its provider had capacity for 100 trillion tokens a day.

Developers rate it. Stripe’s chief executive Patrick Collison tried it and called it “very impressive,” and it is positioned for coding, long-horizon agent work and production use.

The guessing game has been...

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