chai1

Predict protein, nucleic-acid, and small-molecule complex structures with Chai-1.

Updated Aug 23, 2026
One-click install
npx skills add https://github.com/guanxiaol/open-science --skill chai1
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: chai1
Source: https://github.com/guanxiaol/open-science/tree/main/runtime/skills/chai1
Command: npx skills add https://github.com/guanxiaol/open-science --skill chai1

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires chai_lab, and includes scripts (resource) and references (resource) and assets (resource) components.

What problem does it solve?

This Skill addresses the challenge of predicting protein, nucleic-acid, and small-molecule complex structures, providing a comprehensive solution for structure prediction tasks.

Core Features & Use Cases

  • Structure Prediction: Predicts protein, nucleic-acid, and small-molecule complex structures.
  • Use Case: Ideal for predicting antibody-antigen or protein-ligand complexes from a single FASTA file, re-folding designed binders as an AlphaFold-multimer alternative, or driving co-folding from Python for batched campaigns on a GPU.

Quick Start

Run the Chai-1 skill to predict the structure of a protein complex by providing a FASTA file and specifying the output directory.

Frequently Asked Questions about chai1

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I predict protein complex structures from a FASTA file?

To predict protein complex structures, provide a FASTA file as input and specify an output directory. The Chai-1 foundation model processes the sequences to generate the predicted complex structures.

Can I predict antibody-antigen and protein-ligand complexes using Chai-1?

Yes, Chai-1 supports predicting antibody-antigen and protein-ligand complexes. It handles protein, nucleic-acid, and small-molecule complex structure predictions from a single FASTA file.

Does Chai-1 work as an alternative to AlphaFold-multimer for binder re-folding?

Yes, Chai-1 can be used for re-folding designed binders as an alternative to AlphaFold-multimer. It utilizes its foundation model to predict the folded complex structures.

Do I need a GPU to run Chai-1 for molecular structure prediction?

Yes, a GPU is required to run Chai-1 for molecular structure prediction. The Chai-1 foundation model relies on GPU acceleration to process and predict complex structures.

How can I run batched co-folding campaigns with Chai-1?

You can drive co-folding from Python to execute batched campaigns on a GPU. This allows automated processing of multiple protein, nucleic-acid, and small-molecule complex predictions.

What types of molecular complexes can Chai-1 predict?

Chai-1 predicts structures for complexes involving proteins, nucleic acids, and small molecules. It is suitable for antibody-antigen, protein-ligand, and co-folding tasks.