Build a real project in a timed AI-assisted marathon.
Start with an idea, generate a build plan and repo guidance, write the code yourself, save a project link, and complete the marathon for a public result page with a score when scoring is available.
Demo shows a sample completed marathon result. GitHub connection is required before starting a marathon.
From idea to result
Idea
Describe the project you want to build.
AI build plan
Generate architecture, tech stack, repo structure, and milestone guidance.
Manual execution
Write the code yourself and work through the milestones.
Project link
Save a project or deployment URL when you have one.
Result page
Complete the marathon to get a public result page with a score when scoring is available.
Idea
Describe the project you want to build.
AI build plan
Generate architecture, tech stack, repo structure, and milestone guidance.
Manual execution
Write the code yourself and work through the milestones.
Project link
Save a project or deployment URL when you have one.
Result page
Complete the marathon to get a public result page with a score when scoring is available.
A guided start, then your execution.
DevMarathon gives structure to the solo build, but the product work stays in your hands.
Start a marathon
Create a project name and idea. GitHub connection is required before the marathon starts.
Generate plan and repo guidance
Run the AI planner-to-refiner pipeline for architecture, setup direction, and milestones.
Build manually
Use the generated guidance, update milestones, and write the product code yourself.
Complete and get a result
Save a project link, complete the marathon, and open the public result page when it is ready.
What AI helps with.
The AI pipeline prepares the plan and guidance. It does not write the product for you.
Architecture planner
AI generates architecture, tech stack, repo structure, and milestone guidance.
Repo/setup guidance
AI prepares repo structure and setup direction so the build can start with less blank-page friction.
Plan critic
AI reviews the plan for risks and gaps before you start coding.
Plan refiner
AI refines the final plan after the review pass.
What you do.
You bring the idea, connect GitHub, build the project manually, track progress, and complete the marathon.
Connect GitHub
Your profile needs a connected GitHub account before starting a marathon.
Build the project yourself
AI helps prepare the build plan; you write the code.
Update milestones
Track progress by moving milestones through the workspace.
Save a project link
Add a project or deployment URL when you have something ready to show.
Complete the marathon
Finish the run to generate the result page and score when scoring is available.
Choose marathon capacity.
Start free. Upgrade when you want more solo marathon runs.
Free
Try your first marathon.
- 1 marathon total
- Full AI pipeline (4 agents)
- GitHub repo creation
- AI scoring + result page
Builder
For active builders shipping regularly.
- 4 marathons per month
- Full AI pipeline (4 agents)
- GitHub repo creation
- AI scoring + result page
- Priority support
Pro
For serious builders with no limits.
- Unlimited marathons
- Full AI pipeline (4 agents)
- GitHub repo creation
- AI scoring + result page
- Priority support
- Early access to new features