Chai Discovery vs EvolutionaryScale

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

Compared from listings verified as of 2026-06-14

Chai Discovery

Science

Foundation models for molecular structure and antibody design.

View Chai Discovery

EvolutionaryScale

Science

Frontier protein language models (the ESM family) for biology.

View EvolutionaryScale

At a glance

Feature comparison of Chai Discovery and EvolutionaryScale
Attribute	Chai Discovery	EvolutionaryScale
Category	Science	Science
Pricing	FREEMIUM	FREEMIUM
License	Open core	Open core
Deployment	Cloud	Cloud
Platforms (differs)	Web, API	API, Web
Model support	—	—
Vendor (differs)	Chai Discovery	EvolutionaryScale

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

EvolutionaryScale

The team behind Meta's original ESM models, now shipping open ESM3 weights plus a hosted Forge API — research-grade openness with commercial serving.

Open ESM3 weights
Reasons over sequence/structure/function
Served via AWS and NVIDIA partnerships
Ex-Meta ESM team

Open weights non-commercial only
Forge in closed beta
Largest models gated
Pricing undisclosed

Chai Discovery details EvolutionaryScale details All Science apps