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14,448 startups · 29 programs

Double Fifth

Unified API for Behavioral Data

Websitespeedrun page

Why it ranks

How the rank works
3signal of 100 · rising 2
  • went through speedrunProgram · this site+3

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

Competitors

Developer toolsPrimerShared: unified apiSeedcamp 2019Startup →AIMeetStream AIShared: unified apiAntler 2025USStartup →Developer toolsKomboShared: unified api, buildingYC S22BerlinStartup →AIRunwareShared: unified api, ai infraspeedrun SR001LondonStartup →Developer toolsRutterShared: unified api, maintaining, dataYC S19New York CityStartup →
Companies closest to Double Fifth
Company
PrimerShared: unified apiSeedcamp 2019Not statedDevtools
MeetStream AIShared: unified apiAntler 2025Not statedAI
KomboShared: unified api, buildingYC S22ActiveDevtools
RunwareShared: unified api, ai infraspeedrun SR001Not statedAI
RutterShared: unified api, maintaining, dataYC S19ActiveDevtools

Adjacent

Developer toolsInactiveDomeShared: unified api, data, platformsYC F25Startup →AIDeepgramShared: developer access, unified api, buildingYC W16San FranciscoStartup →Developer toolsInactiveIntegration LabsShared: unified api, data, platformsYC S22BengaluruStartup →OtherTroveShared: behavioral dataBetaworks AI Camp: InterfacesStartup →OtherInactiveFuseShared: unified api, plaid, dataYC W19New York CityStartup →
Companies next to Double Fifth
Company
DomeShared: unified api, data, platformsYC F25InactiveDevtools
DeepgramShared: developer access, unified api, buildingYC W16ActiveAI, Devtools
Integration LabsShared: unified api, data, platformsYC S22InactiveDevtools
TroveShared: behavioral dataBetaworks AI Camp: InterfacesNot statedOther
FuseShared: unified api, plaid, dataYC W19InactiveOther

Also from speedrun SR004 in AI

All of speedrun SR004
AIKitbashRealtime everything for the modern era.speedrun SR004Overland ParkStartup →AIDarwinDiscovery & execution layer for AI agents on the web.speedrun SR004San FranciscoStartup →AIAtorieAtorie: Luxury Without the Price Tagspeedrun SR004Los AngelesStartup →AICheckmateBuilding AI-native Vertical SaaSspeedrun SR004San FranciscoStartup →AIChroniclerWhat if your self-texts could organize themselves?speedrun SR004PittsburghStartup →AICoverstarGen Alpha’s social platform.speedrun SR004San FranciscoStartup →
Company
KitbashRealtime everything for the modern era.Not statedAI, Devtools
DarwinDiscovery & execution layer for AI agents on the web.Not statedAI
AtorieAtorie: Luxury Without the Price TagNot statedAI
CheckmateBuilding AI-native Vertical SaaSNot statedAI
ChroniclerWhat if your self-texts could organize themselves?Not statedAI
CoverstarGen Alpha’s social platform.Not statedAI

Programs

Programs Double Fifth went through
ProgramCohortSource
a16z speedrunSR004speedrun Page

About Double Fifth

We are building Plaid for Behavioral Data, a unified API that allows users to selectively grant developers access to their digital data across various other platforms. We do the difficult work of scraping, building, and maintaining data connectors and transforming disparate data formats into a unified schema, making it immediately useful for developers. Netflix watch history, ride data from Uber, DoorDash order history, or purchase history from Amazon. Everything is cleanly structured and readily accessible. We enable powerful and novel use cases (quicker onboarding, hyper personalized insights/recommendations, consumer intelligence, etc.).

Category
AI, Developer tools
Location
New York City, New York, United States of America
Checked
6h ago

Tags: Dev Tools & DevOps, AI Infra

Double Fifth: questions

Which accelerators did Double Fifth go through?

Double Fifth is listed by a16z speedrun (SR004).

Where is Double Fifth based?

Double Fifth lists New York City, New York, United States of America as its location on a16z speedrun's page.