Radius
YC F25 · Active · Code and browse in the same place
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 MidrenderShared: design, code, shipActiveAI, Devtools | AI, Devtools | Active | YCS23 |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 DesignbaseShared: design, codeActiveAI, Devtools | AI, Devtools | Active | YCW23 |
 RivetShared: design, agentActiveAI, Devtools | AI, Devtools | Active | YCF25 |
 StewdioShared: design, placeActiveAI | AI | Active | YCF24 |
 OnlookShared: design, codeActiveAI, Devtools | AI, Devtools | Active | YCW25 |
 OzoneShared: design tools, placeInactiveOther | Other | Inactive | YCW22 |
Also from F25 in AI
All of F25| Company | Category | Status |
|---|---|---|
 CoastsLocalhost service isolation and orchestration for git worktreesInactiveAI, Devtools | AI, Devtools | Inactive |
 CompyleThe coding agent that actually collaborates with youActiveAI, Devtools | AI, Devtools | Active |
 dari.devThe Routing Layer for AI AgentsActiveAI, Devtools | AI, Devtools | Active |
 FastshotLovable for mobile appsActiveAI, Devtools | AI, Devtools | Active |
 Kestrel AIAI Agents for Platform EngineeringActiveAI, Devtools | AI, Devtools | Active |
 LemmaProduction Monitoring for AI agentsActiveAI, Data, Devtools | AI, Data, Devtools | Active |
Founders
- Quentin Romero LauroFounder/CEO
- Michael KlikushinFounder/CTO
About Radius
Radius is a browser where developers can orchestrate agents from their tabs. Ship 100x from a single place where agents can see, navigate, and act on your workspace.
- YC batch
- F25 · Fall 2025
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 2
- Location
- San Francisco, CA, USA
- Founded
- 2025
- Checked
- 31m ago
YC tags: Artificial Intelligence, Developer Tools, Design, Design Tools
Radius: questions
Which YC batch was Radius in?
Radius was in Y Combinator's Fall 2025 batch (F25).
Is Radius still active?
Y Combinator lists Radius as active.
Who founded Radius?
Radius's founders, as listed on its YC page: Quentin Romero Lauro (Founder/CEO), Michael Klikushin (Founder/CTO).
Where is Radius based?
Radius 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.