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Startups14,448Programs29

14,448 startups · 29 programs

Compresr

Active · LLM context compression for better accuracy

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

AIAcquiredZeroEntropyShared: context compression, agent, infrastructureYC W25San FranciscoStartup →AIOpenToolsShared: llm, apiYC S23San FranciscoStartup →AIThe Token CompanyShared: compression, llm, contextYC W26San FranciscoStartup →
Companies closest to Compresr
Company
ZeroEntropyShared: context compression, agent, infrastructureYC W25 +1AcquiredAI, Devtools
OpenToolsShared: llm, apiYC S23ActiveAI, Devtools
The Token CompanyShared: compression, llm, contextYC W26ActiveAI

Adjacent

AIConsensusShared: llmAI Grant Batch 3Startup →OtherMagic Pony TechnologyShared: compressionEF 2014LondonStartup →AICodagShared: accuracy, compresses, tokenYC S26San FranciscoStartup →AIInactiveBricksAIShared: llm, token, apiYC S22San FranciscoStartup →AILLM StatsShared: llm, infrastructureYC S25New York CityStartup →
Companies next to Compresr
Company
ConsensusShared: llmAI Grant Batch 3Not statedAI
Magic Pony TechnologyShared: compressionEF 2014Not statedOther
CodagShared: accuracy, compresses, tokenYC S26ActiveAI, Devtools
BricksAIShared: llm, token, apiYC S22InactiveAI, Devtools
LLM StatsShared: llm, infrastructureYC S25ActiveAI, Devtools

Also from W26 in AI

All of W26
AI/dev/fast/dev/fast is the AI-native code forgeYC W26San FranciscoStartup →AI10x ScienceThe AI-native platform for next-generation protein characterization.YC W26San FranciscoStartup →AI21stUI building blocks for the agentic internetYC W26San FranciscoStartup →AIAemonThe Forward-Deployed AI Research EngineerYC W26San FranciscoStartup →AIAgentic FabriqThe control plane for AI agents.YC W26San FranciscoStartup →AIAlt-XBuilding the best venue for private markets exposure.YC W26Los AngelesStartup →
Company
/dev/fast/dev/fast is the AI-native code forgeteam of 4ActiveAI, Devtools
10x ScienceThe AI-native platform for next-generation protein characterization.team of 5hiringActiveAI
21stUI building blocks for the agentic internetteam of 3ActiveAI, Devtools
AemonThe Forward-Deployed AI Research Engineerteam of 3hiringActiveAI, Devtools
Agentic FabriqThe control plane for AI agents.team of 2ActiveAI
Alt-XBuilding the best venue for private markets exposure.team of 2ActiveAI, Data

Founders

  • Ivan ZakazovFounder/CEO
  • Berke ArginFounder
  • Kamel CharafFounder/CPO

About Compresr

Compresr provides an API that compresses LLM context without losing what matters. It’s a drop-in for agents and RAG that cuts token costs and improves accuracy.

YC batch
W26 · Winter 2026
Status, per YC
Active
Category
AI, Developer tools
Team size
3
Location
San Francisco, CA, USA
Founded
2026
Checked
7h ago

Compresr in W26: 199 companies, 81% AI

LinkedIn

Compresr: questions

Which YC batch was Compresr in?

Compresr was in Y Combinator's Winter 2026 batch (W26).

Is Compresr still active?

Y Combinator lists Compresr as active.

Who founded Compresr?

Compresr's founders, as listed on its YC page: Ivan Zakazov (Founder/CEO), Berke Argin (Founder), Kamel Charaf (Founder/CPO).

Where is Compresr based?

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