Mechanize B Verified

RL environment company · Coding

Domains
Coding Private Codebases
On X
@MechanizeWork ↗
Funding
$9.1M raised · rounds and investors
Tier
B why
Snapshot

Open environment ↗mechanize.work

What Mechanize does

Mechanize builds high-fidelity, long-horizon RL environments and evals for frontier coding agents, including the open GBA Eval benchmark.

Leads with
Coding
Based in
San Francisco, USA
Team
26-50

What Mechanize sells

Read from Mechanize's own website, checked October 12, 2026: the line that puts it in each category.

RL environments

Domains Mechanize covers

  • Coding leads with

    “models carry out software engineering work such as building a feature, deploying an application, or debugging an issue in an unfamiliar codebase.”
    mechanize.work/ ↗

Benchmarks Mechanize built or runs

Mechanize competitors and alternatives

The companies that sell the most of the same things in the same domains, and what they share with Mechanize.

Every RL environment company on the landscape map →

Tier B

B

Growing: 11 to 50 people, or $3M+ raised.

How much stands behind a tier: usage, who backs it, a confirmed line from its own site or paper, and a clear read on X. High with three of the four, medium with two, low otherwise.

  • team 11-50
  • raised $9M
  • valued $500M
  • investors: Nat Friedman, Daniel Gross, Patrick Collison
  • in curated RL directories (5 pts)
How we got to tier B
  1. Adoption: team 11-50; raised $9M; valued $500M; investors: Nat Friedman, Daniel Gross, Patrick Collison. Tier B.
  2. On X: unclear, none buzz No move.
  3. In curated RL directories: 5 points, a floor of C.
  4. Confirmed: a line from its own site or paper places it.

A clear view on X moves a tier one step up or down; most entries don't move. How tiers work.

Mechanize funding

Raised
$9.1Msum of the rounds below
Latest round
Funding round $9.1M2026-04
Valuation
$500M2026-04

Rounds

  • Funding round · $9.1M at a $500M valuation · 2026-04
    We’ve raised $9.1 million at a $500 million post-money valuation from Marco Mascorro, Adam D’Angelo, and Devendra Chaplot.
    1. Read: “We’ve raised $9.1 million at a $500 million post-money valuation from Marco Mascorro, Adam D’Angelo, and Devendra Chaplot.”
    2. Found word for word on its own site: mechanize.work/mechanize-raises-9-1m
    3. The quote states the amount; no lead is named in it
    4. Also named by 2 other pages read
    mechanize.work/mechanize-raises-9-1m/

Angels 11

  • Adam D’Angelo

    Named in the round quoted above.

  • Daniel Gross
    Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.
    1. Read: “Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.”
    2. Found word for word on its own site: mechanize.work
    3. Also named by 2 other pages read and a curated directory
    mechanize.work/
  • Devendra Chaplot

    Named in the round quoted above.

  • Dwarkesh Patel
    Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.
    1. Read: “Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.”
    2. Found word for word on its own site: mechanize.work
    3. Also named by 3 other pages read and a curated directory
    mechanize.work/
  • Marco Mascorro

    Named in the round quoted above.

  • Nat Friedman
    Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.
    1. Read: “Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.”
    2. Found word for word on its own site: mechanize.work
    3. Also named by 3 other pages read and a curated directory
    mechanize.work/
  • Patrick Collison
    Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.
    1. Read: “Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.”
    2. Found word for word on its own site: mechanize.work
    3. Also named by 3 other pages read and a curated directory
    mechanize.work/
  • Sholto Douglas
    Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.
    1. Read: “Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.”
    2. Found word for word on its own site: mechanize.work
    3. Also named by 2 other pages read and a curated directory
    mechanize.work/
  • Alex Atallah
    Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.
    1. Read: “Mechanize is backed by Nat Friedman and Daniel Gross, Patrick Collison, Adam D’Angelo, Marco Mascorro, Dwarkesh Patel, Sholto Douglas, Devendra Chaplot, Alex Atallah, and Marcus Abramovitch.”
    2. Found word for word on its own site: mechanize.work
    3. No other page or directory names it yet
    mechanize.work/
  • Jeff Dean
    Besiroglu says Mechanize is backed by a who’s who: Nat Friedman and Daniel Gross, Patrick Collison, Dwarkesh Patel, Jeff Dean, Sholto Douglas, and Marcus Abramovitch.
    1. Read: “Besiroglu says Mechanize is backed by a who’s who: Nat Friedman and Daniel Gross, Patrick Collison, Dwarkesh Patel, Jeff Dean, Sholto Douglas, and Marcus Abramovitch.”
    2. Found word for word on a page found by search: techcrunch.com/2025/04/19/famed-ai-researcher-launches-controversial-startup-to-replace-all-human-workers-everywhere
    3. Also named by 1 other page read
    techcrunch.com/2025/04/19/famed-ai-researcher-launches-controversial-s…
  • Marcus Abramovitch
    Marcus Abramovitch confirmed that he invested.
    1. Read: “Marcus Abramovitch confirmed that he invested.”
    2. Found word for word on a page found by search: techcrunch.com/2025/04/19/famed-ai-researcher-launches-controversial-startup-to-replace-all-human-workers-everywhere
    3. Also named by 3 other pages read
    techcrunch.com/2025/04/19/famed-ai-researcher-launches-controversial-s…

Every figure is quoted from its own site, its accelerator or a funding announcement; a round's amount and lead appear only when its quote states them. Startup databases are never used as evidence. Checked 2026-10-11. How funding is checked.

Training methods

Methods Mechanize uses, offers or builds for, with public evidence: its own website says so, or two independent sites do.

  • RLVR Reinforcement Learning with Verifiable Rewards On its own website

    “…environments made sense because AI agents were simply not competent enough to deal with anything resembling the complexity of real-world work settings. However, this is changing, and the new reinforcement learning from verifiable reward (RLVR) paradigm will soon be severely bottlenecked by the lack of a sufficient volume of realistic RL environments. At Mechanize, our immediate goal is to remove this bottleneck and accelerate progress toward a fully au…”

    mechanize.work

Where Mechanize sits

Its domain on the map, live. Hover a logo for its name; click to open it. Open it on the full map

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Latest from Mechanize on X

@MechanizeWork ↗

More Coding RL environments

Coding AI benchmarks

Next: browse all environments. Entry from the RL Research daily scrape of public sources, 2026-11-05 snapshot.