Reason Machines
YC X26 · Active · Reason Machines builds Reason Agent, the autonomous software engineer…
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 TesterArmyShared: pull request, bugs, recordingActiveAI, Devtools | AI, Devtools | Active | YCX26 |
 GitStartShared: pull request, engineer, readyActiveAI, Devtools | AI, Devtools | Active | YCS19 |
 CodeballShared: pull request, bugs, shipInactiveAI, Devtools | AI, Devtools | Inactive | YCW21 |
 SaffronShared: write code, engineer, agentActiveAI | AI | Active | YCX26 |
 SparklesShared: pull request, engineer, githubActiveDevtools | Devtools | Active | YCW26 |
 CodeRabbitnot in a program hereShared: pull request, review, codeElsewhereOther | Other | Elsewhere |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 argsShared: github, productivityActiveDevtools | Devtools | Active | YCS25 |
 HopliteShared: cloud computingActiveAI, Devtools | AI, Devtools | Active | YCS26 |
 BeamShared: cloud computing, agentActiveAI, Devtools | AI, Devtools | Active | YCW22 |
 GoScaleShared: cloud computing, machineInactiveDevtools | Devtools | Inactive | YCS12 |
 CakeworkShared: cloud computing, github, environmentInactiveDevtools | Devtools | Inactive | YCW23 |
Also from X26 in AI
All of X26| Company | Category | Status |
|---|---|---|
 SuperlogMake software self-healingActiveAI, Devtools | AI, Devtools | Active |
 SupersetBuilding self-improving softwareActiveAI, Devtools | AI, Devtools | Active |
 InthMonitor and fix product privacy issues before they block growthActiveAI, Devtools | AI, Devtools | Active |
 Keyframe LabsBring AI to life with the world's best interactive avatarsActiveAI, Devtools | AI, Devtools | Active |
 LinzumiTeam chat to command all your company's coding agentsActiveAI, Devtools | AI, Devtools | Active |
 ReplicasRun any coding agent harness in the cloudActiveAI, Devtools | AI, Devtools | Active |
Founders
- Adi SinghFounder/CEO
- Sven MyhreFounder/CTO
About Reason Machines
Reason Machines builds Reason Agent, the autonomous software engineer for engineering teams. Reason connects to GitHub, reproduces bugs, writes code, passes tests, and ships review-ready pull requests with recordings and logs across cloud environments.
- YC batch
- X26 · Spring 2026
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 2
- Location
- San Francisco, CA, USA
- Founded
- 2026
- Checked
- 1h ago
YC tags: Developer Tools, Enterprise Software, Cloud Computing
Reason Machines: questions
Which YC batch was Reason Machines in?
Reason Machines was in Y Combinator's Spring 2026 batch (X26).
Is Reason Machines still active?
Y Combinator lists Reason Machines as active.
Who founded Reason Machines?
Reason Machines's founders, as listed on its YC page: Adi Singh (Founder/CEO), Sven Myhre (Founder/CTO).
Where is Reason Machines based?
Reason Machines lists San Francisco, CA, USA as its location on YC's directory.
Sources: each program's public company list, read twice a week. Not affiliated with Y Combinator or any other program. Logos via logo.dev; trademarks belong to their owners.