Tracer
YC S26 · Active · Combining open-source AI models for better answers at lower cost
Competitors
| Company | Category | Status | Program |
|---|---|---|---|
 Evidently AIShared: open source, machine learning, modelActiveAI, Data, Devtools | AI, Data, Devtools | Active | YCS21 |
 VocodeShared: open sourceAcquiredAI, Devtools | AI, Devtools | Acquired | YCW23 |
 cmuxShared: lab building, open sourceActiveAI, Devtools | AI, Devtools | Active | YCS24 |
 TwentyShared: open source, buildingActiveDevtools | Devtools | Active | YCS23 |
 MysticShared: source model, open source, machine learningInactiveAI, Devtools | AI, Devtools | Inactive | YCW21 |
 Together AInot in a program hereShared: open source, modelElsewhereOther | Other | Elsewhere |
Adjacent
| Company | Category | Status | Program |
|---|---|---|---|
 MagnitudeShared: open source, model, inferenceActiveAI, Devtools | AI, Devtools | Active | YCS25 |
 Atlas MLShared: open source, researchNot statedOther | Other | Not stated | EF2018 |
 ActivepiecesShared: open source, codeActiveAI, Devtools | AI, Devtools | Active | YCS22 |
 OpenFoundryShared: open source, code, buildingActiveAI, Devtools | AI, Devtools | Active | YCW24 |
 OpenCodeShared: open sourceActiveAI, Devtools | AI, Devtools | Active | YCW21 |
Also from S26 in AI
All of S26| Company | Category | Status |
|---|---|---|
 Agnost AIWe find where AI agents fail, then train better models to run them.ActiveAI, Data, Devtools | AI, Data, Devtools | Active |
 BelvedirThe custom AI model factory.ActiveAI | AI | Active |
 CoArenaThe biggest crowdsourced benchmark for Computer-UseActiveAI, Data, Devtools | AI, Data, Devtools | Active |
 DatoricThe secure training data R&D engine for physical AIActiveAI, Data | AI, Data | Active |
 DeepReach Inc.Network for Physical AI Data BusinessActiveAI | AI | Active |
 DreamUsing VLMs to Catch DamageActiveAI | AI | Active |
Founders
- Adam RidaFounder/CEO
About Tracer
Tracer is an AI research lab building more capable and efficient AI through model coordination. We research adaptive inference, ensembling, and systems in which multiple open-source models work together to produce capabilities beyond any single model. Our work spans reasoning, code, research, and agentic systems, with the goal of making advanced intelligence more accessible and economical.
- YC batch
- S26 · Summer 2026
- Status, per YC
- Active
- Category
- AI, Developer tools
- Team size
- 1
- Location
- San Francisco, CA, USA
- Founded
- 2026
- Checked
- 1h ago
YC tags: Machine Learning, Open Source, AI
Tracer: questions
Which YC batch was Tracer in?
Tracer was in Y Combinator's Summer 2026 batch (S26).
Is Tracer still active?
Y Combinator lists Tracer as active.
Who founded Tracer?
Tracer's founders, as listed on its YC page: Adam Rida (Founder/CEO).
Where is Tracer based?
Tracer 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.