StrongDM Software Factory
factory · L5 · operating
Primary
The reference dark factory. Two rules: code must not be written by humans, and must not be reviewed by humans.
≥ $1,000/day/engineer
stated token-spend benchmark for running this way
as of 2026-02 Primary
Made viable by machinery, not by trust in the model: scenario tests held outside the codebase like a machine-learning holdout set, behavioural clones of third-party services so thousands of scenarios can run per hour, and "satisfaction" — a probabilistic success metric — in place of a boolean "the tests passed".
Stripe “Minions”
factory · L4 · operating
Primary
Unattended execution, attended approval. From Slack message to merged PR with no human keyboard — and a human reads every one.
1,300+
PRs merged per week, zero human-written code, all human-reviewed
as of 2026-02-20 Primary
2 rounds
CI limit before a stuck task bails out to a human
as of 2026-02-20 Primary
Built on a decade of prior investment in standardised devboxes, a three-million-test suite and internal tooling — the transferability caveat for anyone smaller.
Spotify “Honk” / Fleet Management
factory · L4 · operating
Reported
A migration factory at scale. Deterministic scripts still do the bulk; the agent takes the edge cases.
~1,000
PRs merged every 10 days
as of 2026-03 Reported
~70 / 30
split between deterministic migration scripts and agent work
as of 2026-03 Reported
~25%
of sessions vetoed by the LLM judge before that judge was removed as models improved
as of 2026-03 Reported
Notable in the other direction: a verifier retired rather than added.
How long an agent holds the thread
evidence · rule of thumb, from operating a factory
Primary
The empirical reason short loops are verifiable and sprawling ones are not.
3–10 steps
where agents hold up; past twenty the thread is gone
as of 2026-06 Primary
Cursor cloud agents
factory · L4 · operating
Vendor
Agents produce merge-ready PRs with recorded evidence; review stays the human bottleneck.
35%
of internally merged PRs created by cloud agents
as of 2026-04 Vendor
Factory.ai Droids
agent · L4 · commercial
Vendor
Model- and interface-agnostic autonomous agents. The performance claims are the company's own.
“31× faster feature delivery”
company-reported, no independent measurement
as of 2026-04-16 Vendor
This site's own factory
factory · L4 · operating
First-hand
A four-plugin suite run by one person. The evidence behind every “From the floor” block on this site.
10
sites published through the full gated arc, 2026-07-11 to 07-23
as of 2026-07-23 First-hand
2 of 3
judge rounds used on the most recent run before both judges passed
as of 2026-07-23 First-hand
1
human feedback round that still caught something after both judges had passed
as of 2026-07-23 First-hand
One operator, disposable output, no production traffic. It is evidence about gates and verification, not about engineering at scale.
METR randomised controlled trial
evidence · disowned by its own authors
Contested
The most rigorous productivity study of the period, and the reason nobody should quote productivity numbers with confidence.
19% slower
measured effect on 16 experienced developers across 246 tasks — WALKED BACK by METR in February 2026
as of 2025-07-10 Contested
~39 points
gap between developers' perceived speed-up and the measured effect
as of 2025-07-10 Contested
METR's position since February 2026 is that selection effects made the follow-up unreliable and the honest answer is that we do not know. Both halves travel together, or neither does.
The cost of a review
evidence · stable enough to plan against
Vendor
The asymmetry that decides whether a factory pays for itself.
≈ $0.05
machine review, per pull request
as of 2026 Vendor
$15–25
human review, per pull request
as of 2026 Vendor
20–40%
of machine review comments that are noise
as of 2026 Vendor
Developer trust in AI-generated code
evidence · surveyed
Reported
Adoption and trust have come apart, and the review burden is where it shows.
96%
of developers do not fully trust AI-generated code
as of 2026-01-08 Reported
48%
always verify it before committing
as of 2026-01-08 Reported
38%
say reviewing AI code takes more effort than reviewing human code
as of 2026-01-08 Reported
Security findings in AI-generated code
evidence · reported
Reported
Volume arrives at the security gate too.
> 10,000/month
new security findings attributed to AI-generated code by June 2025, a tenfold rise from December 2024
as of 2025-09 Reported
Benchmark inflation
benchmark · acknowledged by the benchmark's own publishers
Primary
A high SWE-bench score is not a mergeable pull request.
~73% → ~11%
frontier agent resolution once the verified set is filtered to discriminative cases
as of 2026 Reported
~18–20%
resolution on the live benchmark, which uses novel issues
as of 2026 Reported
OpenAI published its own note in February 2026 saying SWE-bench Verified no longer measures frontier coding capability.
Harness engineering
harness · named discipline
Primary
Agent = Model + Harness. Guides steer before the agent acts; sensors observe after it has.
Separates computational regulation — linters, type checkers, structural tests: fast, cheap, deterministic — from inferential regulation: an LLM judge, a semantic review, slow and non-deterministic. The human's work moves to iterating the harness rather than the code.
The Ralph loop
harness · widely copied pattern
Primary
One agent, an infinite shell loop, one task per iteration, the filesystem as memory, a fresh context window each cycle.
The dumb persistence is the feature: a fresh context each iteration sidesteps context rot, and git history carries the state that conversation history would lose.
Spec-driven development
framework · the common on-ramp
Primary
Specs as the executable source of truth, in place of prompt-by-prompt improvisation.
The reference toolkit carries an immutable constitution file, a specify/plan split and slash-command templates. Heavier multi-agent frameworks simulate an entire delivery team and cost accordingly.
Agents per workflow
evidence · reported pattern
Reported
The same shape appears outside code: a few specialised agents, human approval at the write boundary.
3–7
agents per enterprise workflow, with human review at side-effect boundaries
as of 2026 Reported
Something out of date? That is expected — it is why this page
exists as data. The fix is one entry in _data/landscape.yml and one line in
the update log — no chapter is touched.