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Chai Discovery vs Profluent

A side-by-side comparison of Chai Discovery and Profluent, two Science tools, drawn from Ignaite's continuously-verified listings.

Compared from listings verified as of

Chai Discovery

Science

Foundation models for molecular structure and antibody design.

View Chai Discovery

Profluent

Science

Generative protein language models that design novel proteins.

View Profluent

At a glance

Feature comparison of Chai Discovery and Profluent
AttributeChai DiscoveryProfluent
CategoryScienceScience
Pricing (differs)FREEMIUMPAID
License (differs)Open coreProprietary
DeploymentCloudCloud
Platforms (differs)Web, APIWeb
Model support——
Vendor (differs)Chai DiscoveryProfluent Bio
Capabilities (differs)
  • Protein structure prediction
  • Antibody design
  • Protein design
  • Protein design
  • Antibody design
  • Molecular design

The honest brief

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

Profluent

Pairs frontier protein LLMs with openly released designs like OpenCRISPR-1, while most peers keep AI-designed molecules proprietary.

  • ProGen protein-LLM lineage
  • Open-released gene editor
  • Nature-published work
  • Eli Lilly and IDT partnerships
  • Partnership/licensing only
  • No self-serve platform
  • Open releases are sequences, not a service
  • Opaque pricing

When to pick which

Both cover Antibody design and Protein design.

Pick Chai Discovery if you need Protein structure prediction.

  • Protein structure prediction (primary capability)

Pick Profluent if you need Molecular design.

  • Molecular design (secondary capability)

They share capabilities, but each leads with different ones as a headline job:

Chai Discovery is built around Antibody design.

  • Antibody design (primary capability)

Profluent is built around Protein design.

  • Protein design (primary capability)

They also differ on:

Pricing
FREEMIUM · PAID
License
Open core · Proprietary
Platforms
Web, API · Web
Chai Discovery detailsProfluent detailsAll Science apps