Synth
YC F24 · Active · Prompt and Context Optimization for Coding Agents
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 JcodeShared: coding agent, agent harness, performanceActiveAI, Devtools | AI, Devtools | Active | YCS26 |
 OpenCodeShared: coding agent, infrastructureActiveAI, Devtools | AI, Devtools | Active | YCW21 |
 ReplicasShared: coding agent, agent harness, taskActiveAI, Devtools | AI, Devtools | Active | YCX26 |
 MangoDeskShared: long horizonActiveAI | AI | Active | YCS25 |
 ContinueShared: coding agentAcquiredAI, Devtools | AI, Devtools | Acquired | YCS23 |
 RWXnot in a program hereShared: coding agentElsewhereOther | Other | Elsewhere |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 AviroShared: long horizon, reinforcement learning, datasetActiveAI | AI | Active | YCX25 |
 MentlioShared: context optimization, prompt, codingActiveAI, Devtools | AI, Devtools | Active | YCS26 |
 MillionShared: coding agent, long horizonActiveAI, Devtools | AI, Devtools | Active | YCW24 |
 RelaceShared: coding agent, performance, modelActiveAI, Devtools | AI, Devtools | Active | YCW23 |
 ModaShared: agent harness, prompt, taskActiveAI, Devtools | AI, Devtools | Active | YCW26 |
Also from F24 in AI
All of F24| Company | Category | Status |
|---|---|---|
 AbundantAgent simulation and RL for researchersActiveAI, Devtools | AI, Devtools | Active |
 Afternoon.coBookkeeping, compliance and tax for foundersActiveAI | AI | Active |
 ArchilThe high-performance file system that connects AI to dataActiveAI, Data, Devtools | AI, Data, Devtools | Active |
 ArchiLabsAI Data Center DesignActiveAI | AI | Active |
 Asha HealthWe help medical practices become AI-nativeActiveAI | AI | Active |
 attimetBuilding the Prime RadiantActiveAI | AI | Active |
Founders
- Josh PurtellFounder/CEO
About Synth
Choose a coding agent harness, model, and task dataset and optimize context and prompts to get the best performance for long-horizon tasks
- YC batch
- F24 · Fall 2024
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 2
- Location
- San Francisco, CA, USA
- Founded
- 2024
- Checked
- 4h ago
YC tags: Reinforcement Learning, AI
Synth: questions
Which YC batch was Synth in?
Synth was in Y Combinator's Fall 2024 batch (F24).
Is Synth still active?
Y Combinator lists Synth as active.
Who founded Synth?
Synth's founders, as listed on its YC page: Josh Purtell (Founder/CEO).
Where is Synth based?
Synth 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.