Mirendil raises 1 billion dollars

Mirendil, a startup founded by former Anthropic researchers, has raised 1 billion dollars, the company said on the 12th of November 2026. Kleiner Perkins and Clearlake Capital led the round.

Google, Battery Ventures and Doerr Capital also invested, Mirendil said. The Wall Street Journal reported the Anthropic link.

What Mirendil builds

Mirendil builds tools that let AI agents do AI research work. Agents are programs that do tasks step by step.

Its Lor tool runs hundreds of agents that write code and run tests for days, Mirendil said. Lor is in private beta, an early test for a few users.

A model for under 10 million dollars

One researcher working with agents trained a coding model called Mirendil-Base in 3.5 months, Mirendil said. The computing cost was less than 10 million dollars, it said.

A later version called Fern holds up to 10 million tokens, enough for days of agent work, Mirendil said. Tokens are bits of words.

Bigger goals

Mirendil wants one person to do what used to need a team, the company said. It said it is still a small team.

Six months after its first round

The new round comes six months after a 200 million dollar first round, The Wall Street Journal reported.

Below we break down the rounds

1 billion dollars is five times the 200 million dollar first round, by our arithmetic. Together, the two rounds total 1.2 billion dollars.

What is confirmed and what is not

Mirendil did not say what the company is now worth.

Key facts

Mirendil announced 1 billion dollars on the 12th of November 2026.

Kleiner Perkins and Clearlake Capital led the round.

Its founders worked at Anthropic.

Its Lor tool is in private beta.