A new batch of lab tests confirmed that Claude can autonomously run computational protein design campaigns to produce molecules that work in a laboratory setting. The AI generated 354 successful binders from 1,320 candidates, achieving hit rates between 22% and 35% and outperforming human competitors on 4 of 6 comparable targets. These results, validated independently by Adaptyv Bio and Twist Bioscience, more than double the industry standard success rate of 10% to 15% and included working binders for 14 of 15 targets.

While high affinity binders are a necessary first step in drug development, they are not final drugs. Anthropic is using the experiment as a foundation to teach Claude to manage the end to end development of antibodies and small molecules. The company released a technical report and open sourced its data and prompts, identifying Opus 5 as its most capable model for life science research.

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Key sources

  1. SOURCE@anthropicai“We then worked with Adaptyv Bio and Twist Bioscience, who independently built and tested the proteins Claude designed.”x.com
  2. SUPPORT@anthropicai“Some of its strongest designs bound several times more tightly than the best published de novo binder.”x.com
  3. SUPPORT@anthropicai“teaching Claude to run the entire development process end-to-end for every major type of drug molecule—from antibodies to small molecules.”x.com
  4. SUPPORT@anthropicai“Opus 5 remains our most capable model available for life science research.”x.com
  5. SUPPORT@anthropicai“open-sourcing our prompts and data here: https://t.co/OZXVQWSie2”x.com
  6. SUPPORT@rohanpaul_ai“A lab may no longer need a dedicated protein-design expert to manually run every computational step.”x.com
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