/dev/fast
YC W26 · Active · /dev/fast is the AI-native code forge
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 VoidShared: source cursor, open source, codeActiveAI, Devtools | AI, Devtools | Active | YCS24 |
 PullRequestShared: code reviewAcquiredDevtools | Devtools | Acquired | YCS17 |
 AxoloShared: code reviewActiveDevtools | Devtools | Active | YCW21 |
 OpticShared: code review, open sourceAcquiredDevtools | Devtools | Acquired | YCS18 |
 StageShared: code review, agent, designedActiveAI, Devtools | AI, Devtools | Active | YCX26 |
 Baznot in a program hereShared: code reviewElsewhereOther | Other | Elsewhere | |
 CodeRabbitnot in a program hereShared: code reviewElsewhereOther | Other | Elsewhere |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 Quack AIShared: code reviewNot statedOther | Other | Not stated | EF2023 |
 CodeballShared: code review, confidenceInactiveAI, Devtools | AI, Devtools | Inactive | YCW21 |
 cubicShared: code review, learn, openActiveAI, Devtools | AI, Devtools | Active | YCX25 |
 MagmaShared: agent traceActiveAI, Data, Devtools | AI, Data, Devtools | Active | YCS26 |
 hoop.devShared: code reviewActiveDevtools | Devtools | Active | YCW21 |
Also from W26 in AI
All of W26| Company | Category | Status |
|---|---|---|
 CorelayerAI production engineer for regulated industriesActiveAI, Devtools | AI, Devtools | Active |
 IncidentFoxAI SRE agent that triages, coordinates, and fixes production incidentsActiveAI, Devtools | AI, Devtools | Active |
 Quotient LabsUse Claude Code at 47% less cost in one line of installation.ActiveAI, Devtools | AI, Devtools | Active |
 RunAnywhereFastest inference anywhere: open models on-prem, hosted or on-deviceActiveAI, Devtools | AI, Devtools | Active |
 SalusGuardrails to validate your agent's actions before they executeActiveAI, Devtools | AI, Devtools | Active |
 SkillsyncNotion for AI chatsActiveAI, Devtools | AI, Devtools | Active |
Founders
- Sid MenonFounder/CEO
- Ketan AgrawalFounder
- Milan BhandariFounder/CTO
- Alex IansitiFounder/CPO
About /dev/fast
/dev/fast is the AI-native code forge. We're building 'Review', an open-source Cursor for code review. The Review app is designed to give you confidence in your code. Critique interactive visualizations, diffs, and agent traces, all from one interface. Learn more at https://dev.fast
- YC batch
- W26 · Winter 2026
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 4
- Location
- San Francisco, CA, USA
- Founded
- 2025
- Checked
- 30m ago
YC tags: Developer Tools
/dev/fast: questions
Which YC batch was /dev/fast in?
/dev/fast was in Y Combinator's Winter 2026 batch (W26).
Is /dev/fast still active?
Y Combinator lists /dev/fast as active.
Who founded /dev/fast?
/dev/fast's founders, as listed on its YC page: Sid Menon (Founder/CEO), Ketan Agrawal (Founder), Milan Bhandari (Founder/CTO), Alex Iansiti (Founder/CPO).
Where is /dev/fast based?
/dev/fast 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.