Startupsby GlyphWhy it ranks
How the rank works- went through YCProgram · this site+4
- team of 2Team size · YC's directory+2.5
- hiringHiring · Titles (titles.fru.dev), YC+2
A sum of public facts, not a judgement and not investment advice.
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
| AI | Not stated | Antler2023 | |
| AI, Devtools | Active | YC +1S19 | |
| AI | Not stated | SPC +32023 | |
| AI | Active | YCF26 | |
| AI | Active | YCX26 | |
| Other | Elsewhere |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
| Devtools | Active | YCS25 | |
| AI, Devtools | Active | YCS24 | |
| Other | Not stated | Seedcamp2023 | |
| AI | Active | YCS26 | |
| Other | Not stated | Seedcamp2024 |
Also from F26 in AI
All of F26| Company | Category | Status |
|---|---|---|
| Alkera AIReliable and safe data engineering and data science agentsteam of 3ActiveAI, Data, Devtools | AI, Data, Devtools | Active |
| AI, Devtools | Active | |
| AI, Devtools | Active | |
| AI, Devtools | Active | |
| AI, Devtools | Active | |
| AI, Devtools | Active |
Founders
- Adi SinghFounder/CEO
- Sven MyhreFounder/CTO
About Reason Machines
Reason is an AI teammate for work and code that runs autonomous cloud agents with a frontier harness on cost per task. It delivers the same performance with 22% lower costs than Codex. By operating with a harness outside the sandbox, it acts seamlessly across cloud computers and local devices. Reason runs work from start to finish: from an issue to a finished pull request, on a schedule, or from a Slack alert. It is available as a Mac app, on the web, from the CLI, in Slack, and through a REST API, with about 100 integrations and shareable skills. Bring your own keys and subscriptions, and work rolls over to the next one when limits are hit.
- YC batch
- F26 · Fall 2026
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 2
- Location
- San Francisco, CA, USA
- Founded
- 2026
- Checked
- 6h ago
YC tags: Developer Tools, Enterprise Software, Cloud Computing
Changes seen
Reason Machines: questions
Which YC batch was Reason Machines in?
Reason Machines was in Y Combinator's Fall 2026 batch (F26).
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.