Fully autonomous AI software engineer

The Collaborative AI Developer You’ve Been Waiting For

Automate the boring stuff. Lucien plans, codes, tests, and ships autonomously—under your guardrails.

Trusted by engineers at

Outcomes in the first 30 days

  • 58%
    faster to merged PR
    Median, last pilot cohort (30 days)
  • 41%
    tickets closed autonomously or AI-assisted
    With Lucien either assisting or working autonomously
  • 10-13×
    team throughput at flat headcount
    Features/tickets per engineer across varying domains
Measured across recent pilots; results vary by codebase.

60s product demo. Replace with a Loom/MP4 embed.

Full-cycle autonomous engineering

From planning to fixing production issues, Lucien accelerates your entire development lifecycle

Triage

Intelligent issue prioritization and context gathering

  • Automatically categorizes and assigns severity levels to tickets
  • Gathers relevant context from codebase, logs, and user reports
  • Routes issues to optimal resolution pathways

Plan

Autonomous requirement analysis and technical planning

  • Reads tickets, analyzes codebase context automatically
  • Generates implementation plans with file-level breakdown
  • Self-corrects scope creep and identifies edge cases

Build

End-to-end implementation across your entire stack

  • Writes production-ready code in 40+ languages/frameworks
  • Handles complex refactors and multi-file changes seamlessly
  • Maintains your coding standards and architecture patterns

Test

Comprehensive testing strategy and execution

  • Generates unit, integration, and e2e tests automatically
  • Runs test suites and fixes failing tests independently
  • Validates edge cases humans typically miss

Ship

Seamless deployment and release management

  • Creates pull requests with detailed descriptions and context
  • Handles CI/CD pipeline issues and deployment rollbacks
  • Coordinates releases across microservices and dependencies

Fix

Rapid incident response and resolution

  • Detects and diagnoses production issues automatically
  • Generates targeted fixes for bugs and performance issues
  • Implements hotfixes with minimal downtime

See Lucien in action across your development workflow

How it works

From idea to production in just three steps

  1. Connect repos

    Link your GitHub, GitLab, or Bitbucket repositories. Lucien securely analyzes your codebase patterns and architecture.

    You control which repos to connect
  2. Define project scripts

    Set up your development workflows, testing pipelines, and deployment targets. Lucien learns your team's preferences and standards.

    You set the rules and boundaries
  3. Lucien ships

    From issue triage to production deployment, Lucien handles the entire development cycle while keeping you informed and in control.

    You review and approve all changes

Setup takes less than 3 minutes

Why teams pick Lucien

Clear metrics across speed, quality, supervision, cost, setup, and security.

Speed
Lucien5–15 min for medium tasks (CRON, CRUD)
Agentic AI (e.g Devin)30–60 min with steering
Contractors2–5 days
Hiring2–8 weeks
Copilot-only1–3 hours
Quality
LucienProduction-grade; CI-aware; tests auto-run
Agentic AI (e.g Devin)Context & constraints sensitive
ContractorsDepends on individual
HiringHigh after ramp-up
Copilot-onlyGood for small edits
Supervision
LucienLight – checkpoint approvals (Slack)
Agentic AI (e.g Devin)Medium – frequent steering
ContractorsHigh – reviews & handoffs
HiringMedium – ongoing management
Copilot-onlyHigh – continuous guidance
Cost
LucienPredictable subscription
Agentic AI (e.g Devin)Premium vendor pricing
ContractorsHourly + overhead
HiringSalary + benefits
Copilot-onlyAI tool cost
Setup
Lucien≤3 min – connect repos; optional scripts
Agentic AI (e.g Devin)5–10 min – connect & configure
Contractors1–3 days – onboarding & access
HiringWeeks–months – sourcing & onboarding
Copilot-only2–5 min, no sandboxed editing
Security
LucienHardened, ephemeral sandboxes; audit logs
Agentic AI (e.g Devin)Sandboxed VM
ContractorsNo guarantees
HiringVaries by org
Copilot-onlyNon-sandboxed local execution

Smart teams ship faster with Lucien

Testimonials and case studies with real outcomes.

−35%PR cycle time5–15 minMedium tasks92%First‑pass mergesSOC2‑readySecurity

Lucien takes care of the repetitive work — boilerplate code, reviews, testing... Our throughput has gone way up.

Allison Chen, VP Engineering · Series-B AI Startup
−35%PR time42%First‑pass merges

Ship compliance features 2× faster

  • Monorepo ~380k LOC; CI aware
  • Sandboxed runtime; audit trails
  • 10–25 min for medium-complexity CRUD tasks
−28%Cycle time+1.3k run/wkTests
Read use case

Back‑office automation without new hires

  • Auto‑triage from Linear
  • Slack approvals
  • Zero prod creds stored
+41%/wkTickets closed+0Headcount
Read use case

Platform upgrades with guardrails

  • K8s changes via PRs
  • Multi‑repo aware
  • SOC2‑ready
−22%Incidents+17%Deploys
Read use case

Wire Lucien into your stack in 2 minutes

Then watch it plan, code, and ship — across Git, planning, and Slack.

Detected 23 packages
GitHub
GitLab
Bitbucket
Jira
Linear
Slack
Join beta now3 min setupMore integrations in the pipeline

Connect repos in <3 minutes

GitHub, GitLab, Bitbucket. Lucien learns your repo structure, scripts, and CI fast.

Auto-triage & branch from Jira/Linear

Lucien picks issues, plans branches, opens PRs, and updates tickets automatically.

Communicate with Lucien from Slack

Get notifications for plans, PRs, tests, and deploys. Approve or request changes inline.

Pricing

Start shipping with an autonomous engineer in minutes.

Solo Builder

Best for individuals

$20/ 20 credits
  • 2 users max.
  • Up to 10 concurrent sessions
  • Pay‑as‑you‑go overages
  • Self-teaching; learns from your codebase and tasks
Most popularTeam

Best for small to medium teams

$300/ month
  • Everything in Solo, plus:
  • Unlimited users
  • Unlimited concurrent sessions
  • Early access to upcoming capabilities
  • Dedicated Slack Connect support
Enterprise
SSO/SCIM, audit trails, procurement, custom terms
Talk to sales
Compute Credits

Credits power agent runtime, tests, and CI. Typical medium tasks consume 1–3 credits. View estimator in docs.

Sessions & overages

Concurrent sessions are parallel tasks; backlogs are unlimited. Overages billed at a simple $/credit rate.

Your savings with Lucien

Estimate hours and dollars saved with conservative defaults.

Presets:

Assumptions are conservative: 5–15 min per Lucien task vs 1–3 h manual for medium tasks.

0hhours saved / month$0labor savings / month$0Lucien cost / month$0net savings / month210.00break‑even credits / task
Ready to see real numbers?
Don't just take our word for it.
Get exclusive access to our closed beta and welcome the start of a new era in developer productivity.