Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Sieve

Active · The multimodal data lab

WebsiteYC profile

Why it ranks

How the rank works
17signal of 100 · rising 4
  • team of 34Team size · YC's directory+8
  • went through YCProgram · this site+4
  • 2 programsMore than one program · this site+3
  • hiringHiring · Titles (titles.fru.dev), YC+2

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

Competitors

AIHuman ArchiveShared: data lab, audio, frontierYC W26San FranciscoStartup →AI1910Shared: multimodal data, lab, frontierYC W19BostonStartup →AIEventualShared: multimodal data, image, videoYC W22San FranciscoStartup →AIMarkovShared: data labeling, data engineering, frontierYC S26San FranciscoStartup →AIEncordShared: multimodal data, model, systemYC W21LondonStartup →
Companies closest to Sieve
Company
Human ArchiveShared: data lab, audio, frontierYC W26ActiveAI
1910Shared: multimodal data, lab, frontierYC W19ActiveAI
EventualShared: multimodal data, image, videoYC W22ActiveAI, Devtools
MarkovShared: data labeling, data engineering, frontierYC S26ActiveAI, Data, Devtools
EncordShared: multimodal data, model, systemYC W21ActiveAI, Devtools

Adjacent

AIOverstand LabsShared: data lab, data engineering, understandYC W25New York CityStartup →AIProlificShared: quality data, high quality, trainYC S19LondonStartup →AIPolymathShared: data lab, train, environmentYC W26San FranciscoStartup →AIAfterQueryShared: data labeling, frontier, modelYC W25San FranciscoStartup →AIsieveShared: quality data, high quality, data engineeringYC X25New York CityStartup →
Companies next to Sieve
Company
Overstand LabsShared: data lab, data engineering, understandYC W25ActiveAI, Data
ProlificShared: quality data, high quality, trainYC S19ActiveAI
PolymathShared: data lab, train, environmentYC W26ActiveAI
AfterQueryShared: data labeling, frontier, modelYC W25ActiveAI, Data, Devtools
sieveShared: quality data, high quality, data engineeringYC X25ActiveAI, Data, Devtools

Also from W22 in AI

All of W22
AIVimmerseBring your photos to life with VimmerseYC W22San FranciscoStartup →AIBeamAI-Native Cloud PlatformYC W22New York CityStartup →AIBotCityObservability and Governance for AI-Generated Python scripts.YC W22CampinasStartup →AICodecTurn everyday videos into movies.YC W22San FranciscoStartup →AIDynamo AICompliant-Ready AI for the EnterpriseYC W22San FranciscoStartup →AIAcquiredHomeRoomWe Rent Your Property by the Room. You earn 50% more Rent.YC W22San FranciscoStartup →
Company
VimmerseBring your photos to life with Vimmerseteam of 10ActiveAI, Devtools
BeamAI-Native Cloud Platformteam of 5hiringActiveAI, Devtools
BotCityObservability and Governance for AI-Generated Python scripts.team of 35ActiveAI, Devtools
CodecTurn everyday videos into movies.team of 2ActiveAI
Dynamo AICompliant-Ready AI for the Enterpriseteam of 40hiringActiveAI, Data
HomeRoomWe Rent Your Property by the Room. You earn 50% more Rent.team of 25acquiredAcquiredAI, Data

Programs

Programs Sieve went through
ProgramCohortSource
Y CombinatorW22YC Page
AI GrantBatch 1AI Grant Page

About Sieve

Sieve builds the data and environments frontier AI labs use to train the next generation of multimodal systems. AI is moving beyond chatbots into video, audio, images, software, robotics, and interactive worlds. The next generation of models will need to understand how the world looks, sounds, moves, responds, and changes over time. Progress is bottlenecked by one thing: high-quality data. Sieve brings together exabyte-scale infrastructure, novel multimodal understanding techniques, large-scale sourcing, and deep research partnerships to create datasets and environments with unmatched precision, quality, and speed. This has earned the trust of frontier AI labs, Fortune 100 companies, and fast-growing AI startups working on generative media, robotics, computer use, world models, and agentic systems.

YC batch
W22 · Winter 2022
Status, per YC
Active
Category
AI, Data, Developer tools
Team size
34
Location
San Francisco, CA, USA
Checked
6h ago

YC tags: Developer Tools, Video, Data Labeling, Data Engineering, AI

Sieve in W22: 398 companies, 45% AI

Sieve: questions

Which YC batch was Sieve in?

Sieve was in Y Combinator's Winter 2022 batch (W22).

Which accelerators did Sieve go through?

Sieve is listed by Y Combinator (W22), AI Grant (Grant Batch 1).

Is Sieve still active?

Y Combinator lists Sieve as active.

Where is Sieve based?

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