Chai Discovery
chaidiscovery.com
Actively hiring
AI for Science
Foundation Models
Drug Discovery AI
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Technologies
Salaries
Products
People
Growth
Offices
Jobs
Financials
Funding and backers
Total raised
$530M
2 rounds on record
Latest round
$400M
Series C · Jul 2026 · 3 mo ago
Team
19
US Form 5500 (plan participants) · Dec 2025 · +217% in a year
Hiring now
15
+4 posted in 30 days
Backers
12
Battery Ventures, General Catalyst
The money's age
Fresh money
3 months since the last round · and hiring
Momentum
31/100
hiring for its size, fresh money
Last sign of life
this month
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Jul 14
Raised a round Series C $400M · SiliconANGLE
2025
Team of 19 was 6 · US Form 5500 (plan participants)
Dec 15, 2025
Raised a round Venture round $130M
Sep 10, 2024
On the Hacker News front page Chai-1: Decoding the molecular interactions of life · 270 points
2024
Founded
Tractionpublic signals, read monthly
Web presence
top 0.84%
of 133.2M domains by links, Common Crawl
Hacker News stories
6
best: 270 points
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Series C | Jul 2026 | $400M | — | SiliconANGLE |
| Venture round | Dec 2025 | $130M | — | bloomberg.com |
Backed byfrom the funds' portfolios and accelerator catalogs
Battery Ventures 
General Catalyst 
Amplifypartners 
Bain Capital Ventures 
DCVC 
Index Ventures 
Menlo Ventures 
Oak HC/FT 
Sapphire Ventures 
Scribble Ventures 
Sequoia Capital 
SV Angel Investors in similar startupsfunds that back the companies most like this one
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How Chai Discovery hires
Truth index
C 68/100
Ghost roles
53%
Stale roles
0%
Reposted roles
0%
Chai Discovery scores C on the Alion truth index (A is best, E worst), measured over 15 open roles re-checked against its own hiring board: 53% look like ghost listings, 0% have gone stale and 0% are the same role posted again. It measures how much of what this employer publishes turns into a real, finite search - not the employer as a workplace. How the index is computed
Overview
Chai Discovery is a San Francisco research company founded in 2024 that builds foundation models for molecular structure and interaction prediction. Its Chai-1 model predicts complexes of proteins, small molecules, nucleic acids and antibodies, and was released for free non-commercial use alongside a commercial offering. The company is backed by OpenAI and Thrive Capital and targets the design of antibodies and other biologics.
News
Chai Discovery
Building frontier artificial intelligence to predict and reprogram the interactions between biochemical molecules.
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Chai Discovery
Building frontier artificial intelligence to predict and reprogram the interactions between biochemical molecules.
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Report
Chai Discovery (@chaidiscovery) on X
We're excited to introduce Chai-2, a major breakthrough in molecular design.Chai-2 enables zero-shot antibody discovery in a 24-well plate, exceeding previous SOTA by 100x.Thread
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Report
Chai Discovery
Building frontier artificial intelligence to predict and reprogram the interactions between biochemical molecules.
Read more
Report
Tech stack
Technologies named in job postings at Chai Discovery over the last 12 months, by layer, with the share of postings for each.
Technologies in use
7
Postings analysed
3
Stack modernity
67/100
Languages
Python
Frameworks & libraries
JAX
PyTorch
Practices & domains
Diffusion Models
Post-training
Pre-training
Quantization
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Growth
Hiring Momentum
71/100
Growing
Open positions
15
4 opened / 0 closed in 30 days
ATS activity
Every ~4 hours
Today
Hiring Dynamics
+100%
Hiring Focus
The percentage next to each role is its share of the company's job openings over the last 90 days; the arrow shows the shift versus the previous period.
AI/ML
29% ▲
Backend
29% ▲
Finance
14% ▼
Science & Research
14% ▼
Early Careers
14% ▼
Activity Timeline
Added Triton to stack
Sep 2026
Added JAX to stack
Sep 2026
Added Figma to stack
Sep 2026
Added Pre-training to stack
Aug 2026
Added Post-training to stack
Aug 2026
Added Diffusion Models to stack
Aug 2026
Added HPC to stack
Aug 2026
Added ETL/ELT to stack
Aug 2026
Added SLURM to stack
Aug 2026
Added PyTorch to stack
Aug 2026
Added Kubernetes to stack
Aug 2026
Added CUDA Toolkit to stack
Aug 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
1
Countries
1
Busiest office
San Francisco
San Francisco
United States
HQ
15 open roles 7 posted in 90 days 67% engineering 200-500 est. staff
hires for AI/ML, Backend, Sales
Jobs
≈ $141k – $298k per year (Estimated) • In office • Full-Time • San Francisco
Apply
≈ $141k – $298k per year (Estimated) • In office • Full-Time • San Francisco
Apply
≈ $164k – $359k per year (Estimated) • In office • Full-Time • San Francisco
Python
JAX
PyTorch
Apply
≈ $165k – $362k per year (Estimated) • In office • Full-Time • San Francisco
Python
Quantization
JAX
PyTorch
Apply
≈ $177k – $389k per year (Estimated) • In office • Full-Time • San Francisco
Diffusion Models
Post-training
Pre-training
Apply
≈ $141k – $298k per year (Estimated) • In office • Full-Time • San Francisco
Apply
Apply
≈ $141k – $298k per year (Estimated) • In office • Full-Time • San Francisco
Apply
≈ $165k – $362k per year (Estimated) • In office • Full-Time • San Francisco
Python
Quantization
JAX
PyTorch
Apply