What is Boltz?
Boltz is listed under Science & Research AI, in the Research & Learning category on Flocci AI Tools. First fully open-source model to approach AlphaFold3-level structure prediction, MIT-licensed. It is free, with no paid plan attached, and it lives at github.com.
Is Boltz free?
Boltz is listed as fully free — there is no paid tier attached to it in the catalog. That makes it one of the 115 entries on Flocci AI Tools with no upgrade path built in.
What can Boltz do?
Boltz does 3 things the catalog singles out: First fully open-source model to approach alphafold3-level structure prediction, mit-licensed; boltz-2 adds binding-affinity prediction, not just structure; hostable free via community web apps (e.g. tamarind bio) or run locally.
What is the best free alternative to Boltz?
AlphaFold Server is the closest free alternative: it sits in the same Science & Research AI sub-category and is free. Chai-1 (Chai Discovery) and Kosmos (Edison Scientific / FutureHouse) also start free. The full list is on the alternatives page.
See the full list →