Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Stacktrace

Active · See and control what your agents actually do

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 7
  • went through YCProgram · this site+4
  • team of 3Team size · YC's directory+3.1

A sum of public facts, not a judgement and not investment advice.

Competitors

AItruthsystemsShared: risky behavior, agent, actionYC S25San FranciscoStartup →AIAcquiredBlaxelShared: agent actually, infrastructure, controlYC X25San FranciscoStartup →AIOorbitalShared: control layerMassChallenge Switzerland and UK 2026United KingdomStartup →AINugen IntelligenceShared: control layerAntler 2025IndiaStartup →AIAcaysiaShared: control layerspeedrun SR007San FranciscoStartup →
Companies closest to Stacktrace
Company
truthsystemsShared: risky behavior, agent, actionYC S25 +1ActiveAI, Devtools
BlaxelShared: agent actually, infrastructure, controlYC X25AcquiredAI, Devtools
OorbitalShared: control layerMassChallenge Switzerland and UK 2026Not statedAI
Nugen IntelligenceShared: control layerAntler 2025Not statedAI
AcaysiaShared: control layerspeedrun SR007Not statedAI

Adjacent

OtherFormalShared: cybersecurity, controlYC S20San FranciscoStartup →OtherAmptiv BiosciencesShared: control layerAntler 2024USStartup →AIAcquiredBitPatrolShared: devsecops, cybersecurity, detectYC X25New York CityStartup →OtherVaprTechShared: control layerMassChallenge Switzerland and UK 2026United KingdomStartup →AITekton DynamicsShared: control layer, see, butYC W24LondonStartup →
Companies next to Stacktrace
Company
FormalShared: cybersecurity, controlYC S20ActiveOther
Amptiv BiosciencesShared: control layerAntler 2024Not statedOther
BitPatrolShared: devsecops, cybersecurity, detectYC X25AcquiredAI, Devtools
VaprTechShared: control layerMassChallenge Switzerland and UK 2026Not statedOther
Tekton DynamicsShared: control layer, see, butYC W24ActiveAI

Also from F26 in AI

All of F26
AIArmorer LabsContinuous security verification for AI systems in regulated…YC F26San FranciscoStartup →AIOpenHackAlways-on AI security engineerYC F26San FranciscoStartup →AI0.securityThe autonomous cybersecurity teamYC F26San FranciscoStartup →AICavemanCaveman cuts what AI agents cost without making them dumber.YC F26AmsterdamStartup →AIComposalSwarms of agents acting like users to find bugs before releaseYC F26LondonStartup →AIDatabuddyAI Data Analyst for fast-growing teamsYC F26San FranciscoStartup →
Company
Armorer LabsContinuous security verification for AI systems in regulated…team of 2ActiveAI, Devtools
OpenHackAlways-on AI security engineerActiveAI, Devtools
0.securityThe autonomous cybersecurity teamteam of 2ActiveAI, Devtools
CavemanCaveman cuts what AI agents cost without making them dumber.ActiveAI, Devtools
ComposalSwarms of agents acting like users to find bugs before releaseteam of 3ActiveAI, Devtools
DatabuddyAI Data Analyst for fast-growing teamsActiveAI, Data, Devtools

About Stacktrace

Agents will do most of the work in the future, but only if teams can trust them unsupervised. Stacktrace is the control layer for every agent: it sees every action, detects risky behavior, enforces the bounds your team sets, and steps in when an agent drifts from intent.

YC batch
F26 · Fall 2026
Status, per YC
Active
Category
AI, Developer tools
Team size
3
Location
San Francisco, CA, USA
Checked
6h ago

YC tags: DevSecOps, Cybersecurity, Infrastructure, AI

Changes seen

TagsOct 15, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗
Joined a programOct 12, 2026

Joined Y Combinator's Fall 2026 batch (F26).

Source ↗

Stacktrace in F26: 219 companies, 89% AI

Stacktrace: questions

Which YC batch was Stacktrace in?

Stacktrace was in Y Combinator's Fall 2026 batch (F26).

Is Stacktrace still active?

Y Combinator lists Stacktrace as active.

Where is Stacktrace based?

Stacktrace lists San Francisco, CA, USA as its location on YC's directory.