Live drop
Stealth (unclaimed)Dropped Aug 20, 20268 builds8 makers4 prompts
1M-context multimodal reasoning for long-horizon agentic coding and full game prototypes in one prompt.
About this release
Ox Alpha is an anonymous multimodal reasoning model that launched on OpenRouter on August 20, 2026 under the stealth provider. It offers a 1,048,576-token context window, text/image/video inputs, tool calling, and up to 131K output tokens. It is currently free during its preview period and is being used for extended agent workflows, complex coding tasks, and creative projects like generating complete 3D games.
Read the official Stealth (unclaimed) launch pageWorth opening first
Same brief, other models
All challenges →Challenge
Same brief across models — older takes on the left, newer on the right.
Challenge
Same brief across models — older takes on the left, newer on the right.
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