Chai Discovery vs Recursion

Chai Discovery

One of the few drug-discovery shops to ship open model weights plus a free in-browser server, rather than locking everything behind pharma partnerships.

• Free in-browser structure prediction
• Open Chai-1 weights
• SOTA protein-ligand accuracy
• OpenAI-backed

• Weights non-commercial only
• Chai-2 not open
• Young company (2024)
• Core IP still proprietary

Recursion

Runs a vast in-house automated wet lab generating millions of cell experiments weekly, feeding a 50+ petabyte dataset few rivals can match.

• Recursion OS with LOWE language layer
• Massive proprietary biology dataset
• Natural-language target and compound queries
• Public company with pharma partners

• No self-serve product or API
• Partner and internal use only
• Opaque pricing
• No approved drug yet

Pick Chai Discovery if you need Protein structure prediction, Antibody design, and Protein design.

• Protein structure prediction (primary capability)
• Antibody design (primary capability)
• Protein design (secondary capability)

Pick Recursion if you need Drug target discovery, Molecular design, and Autonomous research.

• Drug target discovery (primary capability)
• Molecular design (secondary capability)
• Autonomous research (secondary capability)