Osmosis
osmosis.ai
Actively hiring
LLM & Generative AI
Reinforcement Learning
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Overview
News
Salaries
Products
People
Growth
Offices
Financials
Funding and backers
Total raised
$233.1M
3 rounds on record
Latest round
$177.1M
Venture round · Jul 2021 · 5 yr ago
Team
51-200
employees, estimated range
Hiring now
3
open roles
Backers
2
Y Combinator, CRV
The money's age
Long since its last round
62 months since the last round · hiring slowed
Momentum
15/100
in the news
Last sign of life
2 mo ago
a posting or a news item
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
May 29, 2025
Launched on Hacker News Show HN: LLM structured outputs hurt performance, we built a model to fix it
Jan 2025
Went through Y Combinator
Jul 31, 2021
Raised a round Venture round $56M · SEC Form D
Jul 31, 2021
Raised a round Venture round $177.1M · SEC Form D
2021
Founded
May 25, 2016
New executive Jonathan Lyons, Executive Officer · SEC Form D
May 10, 2016
Took on debt financing $1M · SEC Form D
Tractionpublic signals, read monthly
Web presence
top 2%
of 133.2M domains by links, Common Crawl
Funding rounds
| Round | Date | Amount | Investors | Source |
|---|---|---|---|---|
| Venture round | Jul 2021 | $177.1M | — | SEC Form D |
| Venture round | Jul 2021 | $56M | — | SEC Form D |
| Debt Financing | May 2016 | $1M | — | SEC Form D |
Registers and programsofficial lists and records that name the company
| Legal entity | OSMOSIS INTERACTIVE, INC. | SEC Form D |
Founders and leadersfrom filings, registers and the company's site
Ross CollinsExecutive Officer, DirectorSEC Form D
Jonathan LyonsExecutive OfficerSEC Form D
Russ StrombergExecutive OfficerSEC Form D
Backed byfrom the funds' portfolios and accelerator catalogs
Y Combinator 
CRV Investors in similar startupsfunds that back the companies most like this one
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How Osmosis hires
Truth index
B 75/100
Ghost roles
0%
Stale roles
100%
Reposted roles
0%
Osmosis scores B on the Alion truth index (A is best, E worst), measured over 3 open roles re-checked against its own hiring board: 0% look like ghost listings, 100% 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
Osmosis is a forward-deployed reinforcement learning platform that helps companies train task-specific AI models that outperform foundation models at a fraction of the cost. Build, deploy, and continuously improve intelligent systems with hands-on integration and real-time feedback.
News
DJI Osmo fans are breaking the shackles of its closed-source camera app
Osmosis, a free open-source app built by DJI watcher Konrad Iturbe, lets you wirelessly review, trim, and download DJI Osmo footage.
Read more
Report
Best Reverse Osmosis Water Systems 2026 - Forbes Vetted
The best reverse osmosis systems reduce tap water contaminants for cleaner, great-tasting water. Our top picks include those from Cloud, Waterdrop and AquaTru.
Read more
Report
Training Thousands of LoRA Adapters at Once
What if we could share the same base model between policies, and just fine-tune different LoRA adapters in a single batch? This is cleaner and solves scalability: we can keep one base model, route tokens to different LoRA adapters, and have the training/i
Read more
Report
Unlocking LoRA MoE RL for Qwen3.5
In order to train large MoE models with RL, you need two systems: a training cluster and an inference cluster. Our stack pairs Megatron-LM with SGLang for this purpose. We wanted to share the process of how we added support for LoRA within our training st
Read more
Report
Elsevier launches study companion Osmosis AI to transform how medical students learn
/PRNewswire/ -- Elsevier today launches Osmosis AI, the first medical study companion to combine AI-powered conversation with the visual learning of Osmosis...
Read more
Report
Electricity through osmosis: Japan opens landmark osmotic power plant
Discover how osmotic energy offers a renewable power source by mixing fresh and salt water, with new facilities in Japan and Denmark.
Read more
Report
Show more news
Salary insights
Compensation ranges based on this company's open jobs
Median
$160k
Typical range
$160k
Open positions
1
1
Jobs
Junior
100%
| Level | Jobs | Median | Typical range |
|---|---|---|---|
| Junior | 1 | $160k | $160k |
Highest paying role
Elsevier Clinical Content Reviewer, Specialty Specific (Part-Time, Fixed Term Contract). International (UK, AUS, NZ) Applicants Only
$160k
Normalized to USD per year
People
Ross Collins
Executive Officer, Director
Jonathan Lyons
Executive Officer
Russ Stromberg
Executive Officer
Osmosis Holdings GP Co.
Director
Names and roles come from public filings, company registers and the company's own site. Is this you? Correct or remove · How we handle this data
Growth
Hiring Momentum
24/100
Hiring freeze
Open positions
3
0 opened / 2 closed in 30 days
Median time-to-fill
357 days
faster than 4% of the market
ATS activity
Every ~4 hours
Today
Hiring Dynamics
0%
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.
Communications
33% ▼
HR
33% ▼
Marketing
33% ▼
Activity Timeline
Added Microsoft Office to stack
Sep 2026
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
San Francisco
United States
HQ
50-200 est. staff