Unsloth AI
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About Unsloth AI
Unsloth AI is a San Francisco–based company on a mission to make custom AI accessible to the widest possible audience. It fixes critical bugs in large language models such as Gemma, Llama, and Phi-4, and conducts open-source reinforcement learning and fine-tuning for LLMs. Backed by Y Combinator in the S24 cohort, it is supported by notable investors including Logan Kilpatrick, Cliff Obrecht, and Jon Oringer. The company has built a strong community, with 29,000+ GitHub stars and more than 8 million monthly downloads on Hugging Face. Its technology is adopted by Canva, LinkedIn, NASA, NVIDIA, and other organizations.
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