Cohorts of 2021

Companies whose accelerator cohort started in 2021. 1,685 companies.

CompanyClusterProgramStatusLast signal
Anakin

One API to get clean data from any website for your AI agents at scale

Data for AIWeb data extraction for AI agentsY CombinatorS21Activechecked 2026-08-23
ArgenTAGAI

Cell studies for everyone, everywhere

Data for AIcell imaging and analysis platformSOSVSOSV IndieBio NY 04Activechecked 2026-08-23
Enso

Self-Service Data Prep and Blend Built for Data Teams.

Data for AISelf-service data preparation and blendingY CombinatorS21Activechecked 2026-08-23
Evidently AI

Open-source monitoring for machine learning models

Data for AIML model monitoring and observabilityY CombinatorS21Activechecked 2026-08-23
ExaAI

Web search rebuilt for LLMs

Data for AIAI-native web search infrastructureY CombinatorS21Activechecked 2026-08-23
Lariat Data

Observability for Data Engineering Teams

Data for AIData quality monitoring and observabilityY CombinatorS21Inactivechecked 2026-08-17
LightlyAI

Help ML teams label the right data

Data for AIactive learning for data selectionY CombinatorS21Activechecked 2026-08-23
PotionAI

AI for product formulation

Data for AIAI-powered product formulationY CombinatorS21Activechecked 2026-08-23
Scispot

The Best Data Infrastructure for Biotechs

Data for AIBiotech data infrastructure and workflowsY CombinatorS21Active, new domain2026-08-23
SecodaAI

Secoda is the AI layer for your Analytics

Data for AIAI-powered data discovery and governanceY CombinatorS21Activechecked 2026-08-23
Telmai

Automated data observability and quality for Data Lake

Data for AIdata quality and observability platformY CombinatorS21Activechecked 2026-08-23
Whaly

Whaly is building a self-service analytics platform

Data for AIself-service analytics platformY CombinatorS21Activechecked 2026-08-23
Encord

The data layer for physical AI

Data for AIMultimodal data curation for physical AIY CombinatorW21Activechecked 2026-08-23
HyperGlueAI

Business intelligence on text

Data for AIText analytics and insightsY CombinatorW21Acquiredchecked 2026-08-24
MindeeAI

AI Document Understanding API

Data for AIdocument understanding and OCR APIY CombinatorW21Activechecked 2026-08-23
Prequel

Helping B2B co's sync data to their customers

Data for AIdata pipelines and warehousing syncY CombinatorW21Activechecked 2026-08-23
SBX RoboticsAI

Synthetic data for better vision.

Data for AIsynthetic data for robot visionY CombinatorW21Inactivechecked 2026-08-17
Segments.ai

Build better computer vision models by building better datasets

Data for AIMulti-sensor data labeling platformY CombinatorW21Acquiredchecked 2026-08-23
Terra API

API for developers and AIs to access health data

Data for AIhealth data integration APIY CombinatorW21Activechecked 2026-08-23
Bounty Media

Zero party deep data provider for advertisers and publishers

Data for AIZero-party data collection for advertisingSOSVSOSV Orbit Startups - MOX 11Site unreachablechecked 2026-08-17
NixtlaAI

Nixtla | Time Series Forecasting & Anomaly Detection

Data for AItime series forecasting and anomaly detectionTechstarsTS 2021Activechecked 2026-08-23
OneClick.aiAI

OneClick.ai

Data for AIautomated machine learning and external signal integrationTechstarsTS 2021Activechecked 2026-08-23
snaplandAI

snapland 2.0 - The Real Estate Deals Intelligence Hub

Data for AIreal estate data intelligenceTechstarsTS 2021Activechecked 2026-08-23
Twelve LabsAI

TwelveLabs: Video Intelligence Platform & API

Data for AIVideo understanding and search infrastructureTechstarsTS 2021Activechecked 2026-08-23