Pavlov's List: RL envs and data startups

John Schulman: “The intros were helpful, thanks! We talked to most of them and I was impressed by most of them.” (used with permission)

DomainCodeLong HorizonEnterpriseComputer UseMLBrowserMulti-DomainSecurityFinanceAlignmentMathTool UseScienceDesign

LocationSFLondonWarsawBrooklynMountain ViewNYCBerkeleyDelawareLausannePalo AltoRemoteSan Mateo

Company	Domain	Location	Team Background	Active Founders & RL Leads	Team Size	Benchmark / Sample
Mercor	Multi-Domain	SFSanta Clara	Thiel Fellowship, Harvard, Georgetown	Brendan Foody, Adarsh Hiremath, Surya Midha	250+	APEX
Handshake	Multi-Domain	SFNYC, Bangalore, Berlin	Palantir, Meta, Scale AI	Garrett LordRL envs: Paco Guzmán, Sahil Bhaiwala, Jack Bratches, Nishant Ranka, Yang Zhao	250+	Gandalf the Grader
Scale	Multi-Domain Code	SFNYC, DC, London	Stanford, Coinbase, YC	RL envs: Chetan Rane	250+	SWE-bench Pro
Turing	Code	SFPalo Alto, Gurugram	Stanford, Rover, Yahoo	Jonathan Siddharth, Vijay Krishnan	250+	VLMBench
Surge	Multi-Domain	SFNYC, Seattle	Google, Meta, Twitter	Edwin ChenRL envs: Nick Heiner	101-250	CoreCraft
Snorkel	Multi-Domain Code	SFRedwood City, NYC	Stanford, UW, Meta	Alex Ratner, Christopher Ré, Paroma Varma, Henry EhrenbergRL envs: Vincent Sunn Chen, Frederic Sala	101-250	Senior SWE-Bench
micro1	Multi-Domain	SF	Stanford, Berkeley	Ali Ansari	101-250	Realm
AfterQuery	Multi-Domain	SFNYC, Seattle	Wharton, Penn, UBC	Carlos Georgescu, Spencer Mateega	51-100	AppBench
Latch	Science	SF	Berkeley, Google, Asimov	Alfredo Andere, Kenny Workman, Kyle Giffin	51-100	benchmarks.bio
Mechanize	Code	SF	Epoch AI	Tamay Besiroglu, Ege Erdil, Matthew Barnett	51-100	GBA Eval
Patronus AI	Multi-Domain Code	SF	Meta AI, Google, Amazon	Anand Kannappan, Rebecca Qian	51-100	FinanceBench, TRAIL
Datacurve	Code	SF	Waterloo	Serena Ge, Charley Lee	26-50	DeepSWE
Halluminate	Finance Enterprise	SF	Capital One, Meta, Cornell	Jerry Wu, Wyatt Marshall	26-50	WebBench
Pareto	Multi-Domain Tool Use	SF	Stanford, Scale, Turing	Phoebe YaoRL envs: Mark Whiting, Youssef Elhady, Joe Crawley	26-50	Leap, Attune
Proximal	Code	SFBangalore	Prime Intellect, Cursor	Justus Mattern, Navid Pour, Calvin Chen	26-50	FrontierSWE
Aptura	Finance Enterprise	LondonSF	Lazard, McKinsey, EF	Chirag Modi	11-25	SpreadsheetBench 2
Bespoke Labs	Code	Mountain ViewMenlo Park, Bangalore, SF	Google DeepMind, UC Berkeley	Mahesh Sathiamoorthy, Alex Dimakis	11-25	OpenThoughts
Collinear	Enterprise Long Horizon	Mountain ViewSunnyvale	Hugging Face, Salesforce, Stanford	Nazneen Rajani, Soumyadeep Bakshi	11-25	Curator Evals
Quesma	Security	Warsaw	Elastic, Sumo Logic, Dynatrace	Jacek Migdal	11-25	BinaryAudit
ReasonCore	Science Code	SF	Turing, Aera Technology, Oracle	Geoff Wolfe, Anshuman Lall, Satish Vutukuru	11-25	Benchmarks
Abundant	Code	SF	Waymo, Google, Mercor	Jesse Hu, Ke Huang, Meji Abidoye	1-10	SWE-Marathon
BenchFlow	Enterprise Browser	SF	Berkeley, Tesla	Xiangyi Li	1-10	SkillsBench
Cua	Code Computer Use	SF	Microsoft, Twitter	Francesco Bonacci, Dillon DuPont	1-10	Cua-Bench
EdotEnv	Long Horizon ML	SF	G-Research, Etched, ETH Zurich	Rui Wang, Michael Zhang	1-10	Long-Horizon Planning
Emulated	Code ML	SF	AWS, DeepMind, Prime Intellect	Joseph Wang, Sid Patllollu	1-10	SDAB
General Reasoning	Finance	LondonSF	Meta, Conjecture, Aleph Alpha	Ross Taylor, Chengxi Taylor, Kip Parker, Thomas Grady	1-10	OpenReward
Markov	Computer Use Tool Use	SF	YC, IIT Madras	Dev Mandal, Harish Ashok	1-10	CUA data, AutoCAD-Bench
Metaphi	Code Enterprise	SFNYC	Waymo, Nuro, Netflix	Abhishek Chandwani, Ishan Gupta	1-10	CREW
pre.dev	Code Long Horizon	Delaware	Penn M&T, Wharton	Arjun Raj Jain, Adam Elkassas	1-10	TB2 results
Tacit Labs	Science Long Horizon	SF	MosaicML, MSR, EF	Nicole Fitzgerald, Anne Marie Droste	1-10	LifeSciBench
Ulam	Math	WarsawLondon	Oxford	Przemek Chojecki	1-10	RLVR Trajectories
Vmax	ML	SFNYC	UCL	Matthew Sargent, Augustine Mavor-Parker	1-10	unix-ctf
Fleet	Multi-Domain Enterprise	SFNYC	Mercor, Anthropic, MSL	Nicolai Ouporov, Andrew Zhou	51-100
Deeptune Acquired	Code Computer Use	NYC	Hebbia	Tim Lupo	26-50
Huzzle Labs	Long Horizon Code	LondonBerlin, SF	Turing	Ingmar Klein, Amit Choudhary	26-50
Taste Labs	Design	NYC	Exa, Palantir, Mercado Libre	Thais Castello Branco	26-50
Verita AI	Design	SFVancouver	HRT, Jane Street, Mercor	Rithika Kacham, Rishi Kalakuntla	26-50
ARIMLABS	Security Long Horizon	Warsaw	Akamai	Mykyta Mudryi, Markiian Chaklosh	11-25
Chakra Labs	Computer Use Tool Use	Brooklyn	Microsoft, L/S, Snap	Nirmal Krishnan, Alex Fung	11-25
dmodel	ML Alignment	SF	OpenAI, Google Brain, EleutherAI	Anish Tondwalkar, Daniel Moon	11-25
HUD	Long Horizon Code	SFSingapore	METR, AWS, Hume	Lorenss Martinsons, Jay Ram	11-25
Idler	Code	SF	Meta, Microsoft, Cornell	Ivan Chub, Nalu Concepcion, Tony Goss	11-25
Incalmo	Security	San Mateo	CMU, MSR, RSAC Labs	Brian Singer, Mark DongRL envs: Omer Akgul, Ao Li	11-25
Preference Model	ML Code	SFToronto, Seattle	Anthropic, Stripe, Datology	Jennifer Zhou, Ning Cao	11-25
Akhara	Enterprise Code	SF	Meta, MIT, Cornell	Spandana Govindgari, Navi Singh, Girish Kumar	1-10
Andromede	Long Horizon	Lausanne	MIT, EPFL	Alexandre Sallinen, Guillaume Allegre	1-10
Anthromind	Medical Long Horizon	SF	Google, Forward Health	Pratik Karki, Mannat Sandhu	1-10
Diffuse Labs	ML Long Horizon	Palo AltoSF	a16z, CMU	Daljeet Virdi, Tejpal Singh	1-10
Dissei	Finance	London	Warwick, Goldman Sachs, HBS	Tudor Popescu, Jai Trivedi, Eddy B	1-10
Exabite	Code	Remote	Stanford, MIT, Magic	Alana Xiang	1-10
Good Start Labs	Games Long Horizon	BrooklynNYC, Toronto	Waterloo, Every, Amazon Robotics	Alex Duffy, Tyler Marques	1-10
Hillclimb	Math	SF	DeepMind, Base	Jun Park, Ibrakhim Ustelbay	1-10
Normal	Hardware Engineering	SF	Cohere, Notion, Fuse	Hudzah, Anson Yu	1-10
Ooak Data	Enterprise	SFParis	Samsung, GoPuff, YC	Thomas Aubry, Pierre-Louis Vouteau, Grégoire Lamy	1-10
Originator	Computer Use Code	LondonParis	Google, Dataform, Pareto Holdings	Ben Cambier, Lewis Hemens	1-10
Phinity	Chip Design	SFPalo Alto	NVIDIA, AWS, Stanford	Sonya Jin, Aadi Nashikkar	1-10
Plato	Browser Enterprise	SF	MultiOn, Waterloo, Georgia Tech	Rob Farlow, Pranav Putta	1-10
Refresh	Code Computer Use	SF	Uber, Amazon	Christopher Settles, Erik Quintanilla	1-10
Sepal AI Acquired	Science	SF	Turing, Bain, McKinsey	Robi Lin, Kat Hu	1-10
Theta	Enterprise	SF	DeepSilicon, Cornell, MultiOn	Rayan Garg, Tanmay Sharma, Gurvir Singh	1-10
Trajectory Labs	Alignment	BerkeleyToronto	METR, GovAI, 80000 Hours	Peter McIntyre, Ben West	1-10
Vetto AI	Code Computer Use	SFSão Paulo, London	DeepMind, Meta, ITA	José André Nunes, Rodrigo Schmidt, Lucas Smaira, Gabriel Albuquerque, Roberta Antunes	1-10