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The autonomous engineer, minus the hosting.
Devin showed the industry that software can ship software. Loom pursues the same goal with the opposite architecture: open source, on your machine, six real Claude Code sessions, and you pay your model providers directly.
The difference
Same ambition, opposite architecture.
Where the work runs
Devin works in the cloud, in environments its vendor manages for you. Loom is a desktop app of about 13 MB for macOS, Linux, and Windows. The fleet runs in native terminals on your hardware, in repos that never leave your disk.
What you pay
Devin is a hosted product with hosted pricing. Loom is free and Apache-2.0. The fleet uses your existing Claude login with no API key, and the Conductor is bring your own key, so every dollar goes straight to a provider you chose.
What you can see
Loom shows six real Claude Code TUIs, a mission DAG, and live activity strips for every terminal. You can type into any session mid-mission. Nothing is hidden behind a chat transcript.
Choosing
An honest read.
Pick Devin when
You want a fully managed service, environments provisioned for you, and a vendor accountable for the whole loop. Devin is polished, and it pioneered this category.
Pick Loom when
You want the work local and inspectable, the code open, and the bill limited to provider usage. You would rather conduct six sessions than wait on one.
Either way
Autonomy only counts if the work holds up. Loom re-checks results before they count as done, and the source control panel makes review the last step of every mission.
Questions
Common questions.
Is Loom as autonomous as Devin?
In spirit, yes. The Conductor plans your goal into tasks, dispatches them across the fleet, answers permission prompts, recovers stalls and rate limits, rotates pooled Claude accounts, and verifies results before they count. The difference is that all of it happens in front of you, and you can step into any terminal at any time. See the Conductor.
What does Loom cost to run?
The app is free. The fleet runs on your existing Claude login, and the Conductor uses a key from OpenAI, Anthropic, Google, xAI, and other providers, or runs fully local on LM Studio, MLX, or Ollama. See pricing for what that looks like in practice.
Is my code private with Loom?
Loom ships no telemetry and requires no account beyond your Claude login. Keys live only in the OS keychain, a secret-path deny-list guards reads and writes, and every file, git, and shell operation goes through a workspace authorization registry. See security.
Hand it the work.
Walk away.
macOS, Linux, and Windows. Around 13 MB. Free and open source.