# Mirendil raises $1B Series A — ex-Anthropic lab building AI R&D agents

> Mirendil raises $1B to put frontier AI research tools within reach of more scientists and engineers.

- Org: Mirendil
- Date: 2026-11-12
- Category: ecosystem
- Source: https://mirendil.com/news/series-a/
- Canonical page: https://ai-tldr.dev/releases/mirendil-1b-series-a/

## In short

Mirendil, the AI lab founded by former Anthropic researchers, raised a $1B Series A led by Kleiner Perkins and Clearlake Capital. The money backs tools that let small teams do frontier AI research, including its Lor agent environment.

## What it is

Mirendil announced a $1B Series A on 12 November 2026, led by Kleiner Perkins and Clearlake Capital, with Battery Ventures, Doerr Capital, Gil & Co, Google, M13, Pear VC and S32 also investing. The lab, started by former Anthropic researchers, raised a $200M seed round earlier in 2026.

## How it works

Mirendil builds on agents that do the hands-on research work. Its Lor environment, now in private beta, runs hundreds of agents that write code and run experiments for days at a time. The company says one researcher working with agents pretrained its Mirendil-Base coding model from scratch in 3.5 months on under $10M of compute, and that Fern, a post-trained version, handles up to 10M tokens of context.

## Why it matters

A $1B round for a lab whose product is AI that does AI research is a large bet that model development can move from big labs to small teams. For developers, the thing to watch is Lor: if it leaves private beta, it would be one of the first commercial agent environments built for running ML experiments end to end.

## Who it's for

ML researchers and teams following AI-for-AI-research tools

## Links

- [Announcement](https://mirendil.com/news/series-a/)
- [Press Release](https://www.prnewswire.com/news-releases/mirendil-raises-1b-to-democratize-frontier-ai-rd-302937248.html)
- [Tech Times Report](https://www.techtimes.com/articles/330614/20261113/ai-lab-mirendil-raises-1b-series-release-names-no-valuation-cites-only-company-tests.htm)