Today we are announcing our collaboration with Pfizer to put Chai's frontier AI—including our latest model, Chai-3—directly into the hands of one of the world's leading pharmaceutical teams.
7:16 AM · Jun 4, 2026 · 114.1K Views
Chai Discovery partners with Pfizer to deploy its Chai-3 AI model for drug discovery and antibody design
The deployment targets protein structure modeling and molecular research.
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Many users celebrated Chai Discovery's Pfizer partnership for AI drug discovery as real-world validation and meaningful progress, with one preferring a competitor.
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97.4%
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2.6%
20 comments with sentiment.
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VIEWS11KBOOKMARKS11LIKES81RETWEETS5
Fred Ehrsam@FEhrsam
AI drug discovery has progressed from idea/open source to use at the largest pharma companies in the world in 2 years. What felt uncertain at seed seems inevitable today. Huge AI + bio acceleration. @chaidiscovery crushing on the commercial front!
Jack Dent@jackdent
I’m delighted to announce @chaidiscovery's collaboration with @pfizer. Their scientists will deploy our AI platform to accelerate drug discovery, including early access to our latest frontier model Chai-3.
You can learn more about this partnership and our momentum in @amyfeldman's feature in @Forbes out today
https://www.forbes.com/sites/amyfeldman/2026/06/04/why-pfizer-and-eli-lilly-are-betting-on-this-13-billion-ai-drug-discovery-startup
8dViews 11KLikes 81Bookmarks 11
REPLIES7
sarah guo@saranormous
Congrats team @chaidiscovery — a team that is not only training AI models to accelerate science, but rapidly deploying them with the leading pharma companies of the world
We will see better therapies, faster because of Chai 🧬
Jack Dent@jackdent
I’m delighted to announce @chaidiscovery's collaboration with @pfizer. Their scientists will deploy our AI platform to accelerate drug discovery, including early access to our latest frontier model Chai-3.
You can learn more about this partnership and our momentum in @amyfeldman's feature in @Forbes out today
https://www.forbes.com/sites/amyfeldman/2026/06/04/why-pfizer-and-eli-lilly-are-betting-on-this-13-billion-ai-drug-discovery-startup
8dViews 10.1KLikes 58Bookmarks 8
Joshua Meier@joshim5
You can read more about the deal in Amy Feldman’s Forbes feature today: https://www.forbes.com/sites/amyfeldman/2026/06/04/why-pfizer-and-eli-lilly-are-betting-on-this-13-billion-ai-drug-discovery-startup/
8dViews 630Likes 5
Ali Partovi@apartovi
@joshim5 @neo Let's goooooooo!
8dViews 485Likes 2
Apoorv Agrawal@apoorv03
@joshim5 Congrats!!!
8dViews 125Likes 1
nabbo (bio/acc)@TensorTwerker
@joshim5 Congratulations to the team 🎉
8dViews 346
MD BABU MIA, PHD@BabuuDx
@joshim5 This is fantastic!
8dViews 233
Tatyana Kanzaveli@glfceo
@joshim5 👏👏👏
8dViews 222
Michelle Lovato@ceogirl2000
@joshim5 Yay!! Congrats!! Have been following and sharing this company with people since I first heard about you guys
8dViews 99
Rishabh Anand (in SF)@rishabh16_
@joshim5 Big news! Congrats @chaidiscovery team 🥳
8dViews 47
VAULT wallet@stable_VAULT
@FEhrsam @chaidiscovery This is the kind of real-world integration that separates hype from horizon. Watching AI move from theoretical promise to actual pipelines in biopharma at speed Chai’s execution proves the model, and now the market’s listening.
8dViews 23
Mokusa@Mokusa09
@joshim5
8dViews 21
Arda Göreci@ArdaGoreci
@joshim5 Congrats!
8dViews 17
wesley hsieh@chengyenhsieh
@joshim5 Congrats Joshua!
8dViews 11
Rugbist@rugbist_
@saranormous @chaidiscovery bold claim, but if chai delivers on pharma speed id say worth the hype
especially since pfizer onboard is real validation
8dViews 11
Maksim@MaksimXBT
@saranormous @chaidiscovery faster deployment doesn't always mean better therapies
8dViews 10
BioTender@Junioryu136689
@joshim5 Congrats🎉🎉🎉🎉
8dViews 9
Hira@Hiraweb3
@saranormous @chaidiscovery pioneering the future of medtech with ai, love to see it
8dViews 9
Kai@seekairos
@saranormous @chaidiscovery Counter-intuitive take: the best leverage here isn't the model, it's the distribution loop.
8dViews 9
Adel Bucetta@adelbucetta
@joshim5 the honest answer is that no one knows if this will be a game-changer or a gimmick yet
8dViews 8
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