TypeSafe AI at a glance
Question | Answer | As of |
|---|---|---|
Who owns TypeSafe AI? | Its founders, staff and investors led by Andreessen Horowitz, Sequoia and DCVC; it is private | Nov 2026 |
Revenue | Not disclosed; the CEO says it is “profitable after expenses” | Oct 2026 |
Valuation | $7.5 billion, at its Series A | Oct 9, 2026 |
Funding | $910 million: a $40 million seed and an $870 million Series A | Oct 2026 |
Product | Jev, a “System One” model; $0.042 per million input tokens, output free | Nov 2026 |
Employees | No company figure; outside estimates put it at about 25, in an 11–50 range | 2026 |
CEO | Diogo Almeida, co-founder | Nov 2026 |
Founded | 2024, by Diogo Almeida, Erik Gafni and Sasha Sheng | 2024 |
Headquarters | San Francisco, near the Embarcadero; staff work in the office five days a week | Nov 2026 |
Email format | {first}@typesafe.ai, such as maya@typesafe.ai; typesafe.com is a different company | Nov 2026 |
TypeSafe AI builds models for software rather than for people. Its model, Jev, reads text or images and answers fixed, typed questions, such as which of several options applies, a score or yes or no, with a probability for each answer, so a program can act on the result. The company calls these “System One Models,” after the fast, intuitive thinking in Daniel Kahneman’s work, and trains them with a method it calls RLCD, reinforcement learning for calibrated decisions (TypeSafe AI).
It is not Typesafe Inc., the Scala and Akka company that renamed itself Lightbend in 2016; typesafe.com now redirects to Akka.
TypeSafe AI in 2026: out of stealth and a $7.5 billion round
After two years in stealth TypeSafe launched Jev in early access on September 15, 2026, with a $40 million seed round led by DCVC (DCVC). Almeida’s launch post on X was viewed about 40 million times, and developers piled in: within a day, nearly 13% of paid teams on Vercel’s AI Gateway were using Jev, more than twice any previous model launch (Vercel). Demand briefly knocked its API offline. Ramp’s data on business spending ranked TypeSafe the top trending software vendor for September (Ramp).
Bigger companies answered fast. AWS released an open-source rival, Strands Decider 2B, on October 1, OpenAI launched a Decisions API on October 6, and Cloudflare followed with Clef (Implicator). On October 9 TypeSafe raised $870 million at a $7.5 billion valuation, led by Andreessen Horowitz. Jev 1.14, released October 14, added images, long context and a new question type.
Who owns TypeSafe AI?
TypeSafe AI is private. Its three founders and staff hold shares alongside its investors: DCVC led the seed, and Andreessen Horowitz led the Series A with Sequoia Capital and DCVC (a16z). a16z’s Martin Casado joined the board.
What is TypeSafe AI’s revenue?
TypeSafe hasn’t disclosed revenue. Almeida told Bloomberg in October 2026 that the company is “profitable after expenses,” and it says it processes trillions of tokens a day (Channel Insider). Its adoption claims differ: TypeSafe says a third of the Fortune 500 use Jev, while a16z, its lead investor, put it at 25% the same day; neither names those companies. Customers it does name include Jack & Jill, MotherDuck and Sardine (TypeSafe AI).
TypeSafe AI ARR (annual recurring revenue)
No ARR figure has come from the company or its investors. A claim that it reached a $100 million run rate within a week of launch circulates on data sites without a primary source, so we don’t use it. Ramp’s rankings measure how many businesses pay for a vendor, not revenue.
TypeSafe AI MRR (monthly recurring revenue)
Not published. Jev is sold by usage, per input token, rather than by monthly subscription.
How much has TypeSafe AI raised? Funding and valuation
$910 million in two rounds, both in the five weeks after launch. TypeSafe AI, Inc. had filed no Form D with the SEC as of November 10, 2026.
Round | Date | Amount | Lead | Valuation |
|---|---|---|---|---|
Series A | Oct 9, 2026 | $870M | Andreessen Horowitz, with Sequoia and DCVC (TypeSafe AI) | $7.5B |
Seed | Sep 15, 2026 | $40M | DCVC | About $200M, Forbes reported (SiliconANGLE) |
What does TypeSafe AI do? Products
Almeida’s pitch is that chat models are tuned to please people, which makes them unreliable for automation. “We have lightning in a bottle, and yet it is not useful,” he told TechCrunch (TechCrunch). Jev instead returns typed answers with probabilities in 70 to 500 milliseconds, and the company says it is far faster and cheaper than general models for the same judgments. Those figures come from TypeSafe itself, which hasn’t released the model’s weights.
Date | Launch |
|---|---|
Oct 14, 2026 | Jev 1.14: images, long context, the Box question type |
Sep 15, 2026 | Jev 1.13 in early access; System One Models and RLCD announced |
Nov 2025 | First public site and playground |
2024 | Founded; two years in stealth |
TypeSafe AI pricing
Jev costs $42 per billion input tokens, $0.042 per million, and output tokens are free; higher limits come with custom and enterprise plans (TypeSafe AI docs). OpenAI’s Decisions API launched at $0.10 per million input tokens. Enterprise customers get SOC 2 Type II reports and zero data retention.
Questions about the claims
Most of TypeSafe’s speed, cost and adoption figures come from the company and its investors. Implicator noted that its Series A post named no customers; The Register pointed out that its Doom demo ran on a text description of the game rather than on pixels (The Register); and TechCrunch reported that outside observers suspect Jev is built on an open-weight language model, which Almeida wouldn’t discuss.
TypeSafe AI vs OpenAI, AWS and Cloudflare
Jev competes with general models used with structured outputs, such as small GPT, Gemini Flash and Claude Haiku models, and since October 2026 with dedicated rivals: OpenAI’s Decisions API, launched three weeks after Jev (Fortune), AWS’s open-source Strands Decider 2B and Cloudflare’s Clef. An OpenAI employee credited Jev with “inspiring this whole thing.”
Who is the CEO of TypeSafe AI?
Diogo Almeida, who co-founded the company in 2024 after about four and a half years at OpenAI, where he co-authored the InstructGPT paper and worked on the research behind ChatGPT. His co-founders are CTO Erik Gafni, a repeat founder who was an early employee at the genetics companies Invitae and Freenome, and COO Sasha Sheng, formerly at Meta’s AI research lab (TypeSafe AI).
Person | Role |
|---|---|
Diogo Almeida | Co-founder and CEO; formerly at OpenAI, a co-author of InstructGPT |
Erik “Spock” Gafni | Co-founder and CTO; leads model training and go-to-market |
Sasha Sheng | Co-founder and COO; formerly a research engineer at Meta/FAIR |
Diogo Almeida’s bio and contact routes: TypeSafe AI CEO Diogo Almeida: email, LinkedIn and bio.
Where is TypeSafe AI based?
San Francisco. Its terms give 255 California Street, Suite 1300, as its address, and its team works in an office near the Embarcadero five days a week (TypeSafe AI). It had 17 open roles in November 2026, all in San Francisco. TypeSafe AI, Inc. is a Delaware corporation.
What is TypeSafe AI’s email format?
TypeSafe AI staff use {first}@typesafe.ai, such as maya@typesafe.ai for a fictional Maya Chen. Addresses at typesafe.com belong to a different company, the Scala and Akka business once called Typesafe.
Need | Official address |
|---|---|
Support | support@typesafe.ai, or the help center at help.typesafe.ai |
Sales and enterprise | sales@typesafe.ai |
Security | security@typesafe.ai |
Privacy | privacy@typesafe.ai |
Press | press@typesafe.ai |
All patterns, domains and official inboxes: TypeSafe AI email format.
Key events
Date | Event |
|---|---|
Nov 4, 2026 | Ramp ranks it third among trending vendors for October (Ramp) |
Oct 14, 2026 | Jev 1.14 |
Oct 9, 2026 | $870M Series A at $7.5B led by Andreessen Horowitz |
Oct 7, 2026 | Ramp ranks it the top trending vendor for September |
Oct 6, 2026 | OpenAI launches a rival Decisions API |
Sep 18, 2026 | Jev’s record launch on Vercel’s AI Gateway |
Sep 15, 2026 | Leaves stealth; Jev launches; $40M seed led by DCVC |
2024 | Founded by Diogo Almeida, Erik Gafni and Sasha Sheng |
More on TypeSafe AI and similar companies
TypeSafe AI email format: the staff pattern, and why typesafe.com isn’t this company
TypeSafe AI CEO Diogo Almeida: from OpenAI’s InstructGPT to Jev
AI agent companies: the agent and automation companies Jev is built for
Fastest-growing SaaS companies: TypeSafe AI and others by growth
List of AI companies: AI labs and AI software companies
Vercel dossier: the cloud whose AI Gateway saw Jev’s record launch
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