Recursive Unveils Ai-built, Open-weight Flint Coding Model

WHO:

TechCrunch - Recursive, a startup, released the Flint coding model.

Techmeme - Recursive developed Flint with its Eureka Machine AI system.

Techmeme - Will Knight of Wired reported on Recursive’s release of Flint.

WHAT:

MarkTechPost - Flint is a mixture-of-experts (MoE) model with 2.5 billion active parameters.

MarkTechPost - Recursive reports Flint scored 74.2% on SWE-bench Verified and runs at more than 125 tokens per second on an M4 Pro MacBook Pro.

MarkTechPost - Flint is released under the Apache 2.0 license.

TechCrunch - Recursive released Flint as a free, laptop-sized coding model.

Techmeme - Flint is an open-weight coding model with 40 billion parameters.

TechCrunch - Recursive says Flint was built largely by its own AI research system.

Techmeme - Recursive says its Eureka Machine AI system automated most of Flint’s development.

Techmeme - Will Knight reported that he had been testing Flint; the excerpt does not give further details about his testing.

WHY:

TechCrunch - Flint is an early test of AI that improves itself.

Techmeme - Recursive makes the case that the benefits of using AI to build AI outweigh the risks.

HOW:

TechCrunch - Recursive says its AI research system was used to build much of Flint.

Techmeme - Recursive developed Flint using Eureka Machine, which automated most of the development.

(UPDATED October 22, 2026 00:09 UTC)

Startup Recursive has released Flint, a free, open-weight coding model designed to run on a laptop. The company says its Eureka Machine AI research system automated most of Flint’s development, making the model an early test of whether AI can help improve and build AI systems. Flint is a mixture-of-experts model with 40 billion parameters, including 2.5 billion active parameters. Recursive reports that it scored 74.2 percent on SWE-bench Verified, a coding benchmark, and runs at more than 125 tokens per second on an M4 Pro MacBook Pro. The model is released under the Apache 2.0 license. Recursive is using the project to argue that the benefits of employing AI to build AI outweigh the risks. Wired’s Will Knight has been testing Flint, though details of his tests have not been provided.

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(UPDATED October 21, 2026 22:27 UTC)

Recursive has released Flint, a free coding model designed to run on a laptop, marking an early test of AI systems helping to improve and build AI. The open-weight model has 40 billion parameters, and the startup says its own Eureka Machine system automated most of the development. Recursive says the system handled much of the research and work that went into creating Flint. The release puts the company’s approach to AI-assisted development into practice: using an AI system to help produce another AI model. Recursive argues that the benefits of using AI to build AI outweigh the risks. Wired reporter Will Knight has been testing Flint, though no further details about his testing were provided.