Control every aspect of model training and fine-tuning
Tinker is a flexible API for efficiently fine-tuning open source models with LoRA. It's designed for researchers and developers who want flexibility and full control of their data and algorithms without worrying about infrastructure management.
Tinker is a flexible API for fine-tuning language models, and the first product from @miramurati's Thinking Machines lab, which also just announced their $2B seed on a $12B valuation. You'll recall that she was CTO of OpenAI, before briefly becoming CEO.
Write training loops in Python on your laptop; we'll run them on distributed GPUs. Private beta opened yesterday.
Access is limited to start, but you can sign up for the waitlist here. If you're a university or organization looking for wide scale access, contact [email protected].
About Tinker on Product Hunt
“Control every aspect of model training and fine-tuning”
Tinker launched on Product Hunt on October 2nd, 2025 and earned 134 upvotes and 1 comments, placing #10 on the daily leaderboard. Tinker is a flexible API for efficiently fine-tuning open source models with LoRA. It's designed for researchers and developers who want flexibility and full control of their data and algorithms without worrying about infrastructure management.
On the analytics side, Tinker competes within API, Artificial Intelligence, GitHub and Data — topics that collectively have 607.7k followers on Product Hunt. The dashboard above tracks how Tinker performed against the three products that launched closest to it on the same day.
Who hunted Tinker?
Tinker was hunted by Chris Messina. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Tinker including community comment highlights and product details, visit the product overview.
Chris Messina
Tinker is a flexible API for fine-tuning language models, and the first product from @miramurati's Thinking Machines lab, which also just announced their $2B seed on a $12B valuation. You'll recall that she was CTO of OpenAI, before briefly becoming CEO.
Write training loops in Python on your laptop; we'll run them on distributed GPUs. Private beta opened yesterday.
Access is limited to start, but you can sign up for the waitlist here. If you're a university or organization looking for wide scale access, contact [email protected].