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14,448 startups · 29 programs

Baserun

Active · Observability and evaluation platform for LLM apps.

WebsiteYC profile

Why it ranks

How the rank works
7signal of 100 · rising 2
  • went through YCProgram · this site+4
  • team of 2Team size · YC's directory+2.5

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

Competitors

AIAgenta.aiShared: llm appsAntler 2023GermanyStartup →AIHoneyHiveShared: llm apps, observability, evaluationPlug and PlayUnited StatesStartup →AIAcquiredHeliconeShared: aiops, observability, llmYC W23San FranciscoStartup →AIFoundation EGIShared: development cycle, streamlinePlug and PlayUnited StatesStartup →AIAcquiredChatterShared: aiops, llm, testingYC S23PhiladelphiaStartup →
Companies closest to Baserun
Company
Agenta.aiShared: llm appsAntler 2023Not statedAI
HoneyHiveShared: llm apps, observability, evaluationPlug and Play Not statedAI, Devtools
HeliconeShared: aiops, observability, llmYC W23AcquiredAI, Data, Devtools
Foundation EGIShared: development cycle, streamlinePlug and Play Not statedAI
ChatterShared: aiops, llm, testingYC S23AcquiredAI, Devtools

Adjacent

AIOpenToolsShared: llmYC S23San FranciscoStartup →AIAcquiredDAGWorks Inc.Shared: aiops, observability, llmYC W23San FranciscoStartup →AIRespanShared: aiops, observability, evaluationYC W24San FranciscoStartup →AIConsensusShared: llmAI Grant Batch 3Startup →OtherLevitShared: observabilitySPC 2024San FranciscoStartup →
Companies next to Baserun
Company
OpenToolsShared: llmYC S23ActiveAI, Devtools
DAGWorks Inc.Shared: aiops, observability, llmYC W23AcquiredAI, Devtools
RespanShared: aiops, observability, evaluationYC W24ActiveAI, Devtools
ConsensusShared: llmAI Grant Batch 3Not statedAI
LevitShared: observabilitySPC 2024Not statedOther

Also from S23 in AI

All of S23
AIInactiveAtlaThe improvement engine for AI agentsYC S23LondonStartup →AIAutomorphicInfuse knowledge into language models with just 10 samplesYC S23San FranciscoStartup →AICedanaFast, reliable, reproducible AI with GPU live migrationYC S23New York CityStartup →AIInactiveCodeStoryAide is an AI-native , privacy-first IDE built on top of VSCodeYC S23LondonStartup →AICognitio LabsAI back office for food product quality teamsYC S23Los AngelesStartup →AIAcquiredContinuePioneering open-source coding agentYC S23San FranciscoStartup →
Company
AtlaThe improvement engine for AI agentsteam of 10InactiveAI, Data, Devtools
AutomorphicInfuse knowledge into language models with just 10 samplesteam of 3ActiveAI, Devtools
CedanaFast, reliable, reproducible AI with GPU live migrationteam of 5hiringActiveAI, Devtools
CodeStoryAide is an AI-native , privacy-first IDE built on top of VSCodeteam of 4InactiveAI, Devtools
Cognitio LabsAI back office for food product quality teamsteam of 3ActiveAI, Data
ContinuePioneering open-source coding agentacquired by Cursoron 3 Glyph sourcesAcquiredAI, Devtools

About Baserun

LLMs are incredibly powerful, but latency, cost, and unpredictable outputs have made productionizing LLM features challenging. Baserun is a testing and observability platform that helps AI teams streamline their development cycle from identifying an issue to evaluating their solution, so that teams ship faster with confidence.

YC batch
S23 · Summer 2023
Status, per YC
Active
Category
AI, Developer tools
Team size
2
Location
San Francisco, CA, USA
Checked
6h ago

YC tags: AIOps, Developer Tools, B2B, AI

Changes seen

TagsOct 19, 2026

No longer tagged Artificial Intelligence.

Source ↗

Baserun in S23: 220 companies, 78% AI

Baserun: questions

Which YC batch was Baserun in?

Baserun was in Y Combinator's Summer 2023 batch (S23).

Is Baserun still active?

Y Combinator lists Baserun as active.

Where is Baserun based?

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