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Startups14,448Programs29

14,448 startups · 29 programs

Blaxel

Acquired · The infrastructure for autonomous agents

WebsiteYC profile

Why it ranks

How the rank works
14signal of 100 · rising 9
  • team of 12Team size · YC's directory+5.8
  • acquiredOutcome · YC, program pages, Acquisitions+4
  • went through YCProgram · this site+4

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

Competitors

AIDoublezeroShared: autonomous agent, infrastructure, stateYC S24RemoteStartup →AIRessl AIShared: autonomous agent, actuallyYC W26BengaluruStartup →AIKERNELShared: cold start, cloud computing, infrastructureYC S25San FranciscoStartup →AIStacktraceShared: agent actually, infrastructure, controlYC F26San FranciscoStartup →AIBeamShared: cloud computing, sandboxes, agentYC W22New York CityStartup →
Companies closest to Blaxel
Company
DoublezeroShared: autonomous agent, infrastructure, stateYC S24ActiveAI, Devtools
Ressl AIShared: autonomous agent, actuallyYC W26 +1ActiveAI
KERNELShared: cold start, cloud computing, infrastructureYC S25ActiveAI, Devtools
StacktraceShared: agent actually, infrastructure, controlYC F26ActiveAI, Devtools
BeamShared: cloud computing, sandboxes, agentYC W22ActiveAI, Devtools

Adjacent

AIThunder ComputeShared: cloud computing, infrastructure, sandboxesYC S24San FranciscoStartup →AIprimitiveShared: autonomous agent, infrastructureYC X26San FranciscoStartup →AILangwatchShared: autonomous agent, infrastructure, controlAntler 2023NetherlandsStartup →AIArchalShared: infrastructure, sandboxes, agentYC S26San FranciscoStartup →AIDodge AIShared: autonomous agentAntler 2024IndiaStartup →
Companies next to Blaxel
Company
Thunder ComputeShared: cloud computing, infrastructure, sandboxesYC S24ActiveAI, Data, Devtools
primitiveShared: autonomous agent, infrastructureYC X26ActiveAI
LangwatchShared: autonomous agent, infrastructure, controlAntler 2023Not statedAI
ArchalShared: infrastructure, sandboxes, agentYC S26ActiveAI, Devtools
Dodge AIShared: autonomous agentAntler 2024Not statedAI

Also from X25 in AI

All of X25
AIAttuneFaster builds, zero effort.YC X25San FranciscoStartup →AIGolfAgentic AI Security and GovernanceYC X25San FranciscoStartup →AIHelixDBThe fastest & most scalable graph-vector database on the marketYC X25LondonStartup →AITinfoilEncrypted AI with verifiable privacyYC X25San FranciscoStartup →AIBoost RoboticsRobots for the inspection and maintenance of data centersYC X25BostonStartup →AICapacitiveThe data gateway for agents.YC X25San FranciscoStartup →
Company
AttuneFaster builds, zero effort.team of 3hiringActiveAI, Devtools
GolfAgentic AI Security and GovernanceActiveAI, Devtools
HelixDBThe fastest & most scalable graph-vector database on the marketteam of 6ActiveAI, Data, Devtools
TinfoilEncrypted AI with verifiable privacyteam of 5ActiveAI, Devtools
Boost RoboticsRobots for the inspection and maintenance of data centersteam of 2ActiveAI, Devtools
CapacitiveThe data gateway for agents.team of 2ActiveAI, Devtools

Founders

  • Paul SinaïFounder/CEO
  • Charles DrappierFounder
  • Mathis JoffreFounder
  • Nicolas LecomteFounder
  • Christophe PloujouxFounder/CTO

About Blaxel

Blaxel is the infrastructure foundation for autonomous agents. Engineered for the way agents actually run, Blaxel gives builders deep control over compute (sandboxes), storage (shared filesystem), and networking as built-in infra primitives. Unlike traditional sandboxes that expire or suffer from cold starts, our sandboxes automatically scale to zero after 1s of inactivity and resume in under 25ms with full memory state preserved, allowing you to keep millions of secure sandboxes on standby indefinitely.

YC batch
X25 · Spring 2025
Status, per YC
Acquired
Category
AI, Developer tools
Team size
12
Location
San Francisco, CA, USA
Founded
2024
Checked
6h ago

YC tags: Developer Tools, Cloud Computing, Infrastructure, AI

Changes seen

TagsOct 19, 2026

Newly tagged AI; no longer tagged Artificial Intelligence.

Source ↗
HiringSep 28, 2026

Stopped hiring.

Source ↗
StatusSep 28, 2026

Now listed as acquired, was active.

Source ↗

Blaxel in X25: 144 companies, 90% AI

GitHub LinkedIn

Blaxel: questions

Which YC batch was Blaxel in?

Blaxel was in Y Combinator's Spring 2025 batch (X25).

Is Blaxel still active?

Y Combinator lists Blaxel as acquired.

Who founded Blaxel?

Blaxel's founders, as listed on its YC page: Paul Sinaï (Founder/CEO), Charles Drappier (Founder), Mathis Joffre (Founder), Nicolas Lecomte (Founder), Christophe Ploujoux (Founder/CTO).

Where is Blaxel based?

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