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AI builds AI: Startup Recursive launches Flint, a free coding model that runs on a laptop
Flint is a 40-billion-parameter mixture-of-experts model activating only 2.5 billion parameters per task, free and open-source for offline use; nearly every step of its development was handled by Recursive's automated research system, the Eureka Machine.
Why it matters
This is the first scaled proof of AI helping build AI: a small team shipped a usable coding model in under four months with an automated research system doing most of the work. A free local model also frees developers from per-token cloud fees and keeps code private.
Full report
AI startup Recursive on Oct. 21 released Flint, a free coding model that runs directly on a laptop. Flint uses a mixture-of-experts architecture: 40 billion parameters in total, activating just 2.5 billion per task.
Flint is available on Hugging Face under the Apache 2.0 license for anyone to download free. Because it runs on the user's own machine, developers can work offline, keep code off the cloud, and skip the per-token fees charged by hosted AI services.
Recursive says its automated research platform, the Eureka Machine, handled nearly every step of Flint's development — from exploring ideas to running experiments and refining the model — letting a small team build it from scratch in under four months.
Founded in 2025, Recursive emerged from stealth in May 2026 with $650 million in funding at a $4.65 billion valuation, backed by GV, Nvidia, and AMD Ventures. Its CEO is Richard Socher, formerly chief scientist at Salesforce.
The company acknowledges Flint needs more guidance than big paid coding assistants and recommends splitting large tasks into steps. Whether the Eureka Machine can push AI self-improvement beyond a laptop-scale model is the next test.
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