The AI Stack
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The directory

Companies

Every company building a layer of the AI stack — searchable, filterable, and cross-referenced against investors and roles.

440Tracked
CompanyLayerPrimary patternStage
Neo4j, Inc.L3 Data & StorageDominant
NeonL3 Data & StorageSpecialized DBGrowth
NextEra EnergyNEEL0 Physical InfrastructureDominant
Niantic Spatial, Inc.L4 Models & TrainingSpeculative
Nomic AIL3 Data & StorageSearch & RetrievalGrowth
NominalL6 Applications & ProductsEnterprise Platforms & WorkflowSpeculative
Notion AIL6 Applications & ProductsMeeting & CollaborationGrowth
Nous ResearchL4 Models & TrainingOpen-Weight FrontierGrowth
Numbers Station AIL6 Applications & ProductsData AnalyticsSpeculative
NumericL6 Applications & ProductsFinanceSpeculative
NuScale PowerSMRL0 Physical InfrastructureSpeculative
NVIDIANVDAL1 Silicon & ComputeDominant
Oasis SecurityL6 Applications & ProductsSecuritySpeculative
OkloOKLOL0 Physical InfrastructureSpeculative
OllamaL4 Models & TrainingSpeculative
OnyxL3 Data & StorageSpeculative
OpenAIL4 Models & TrainingClosed-Source FrontierDominant
OpenAI Agents SDKL5 Orchestration & FrameworksSingle-Agent SDKsGrowth
OpenAI Global, LLCL4 Models & TrainingDominant
OpenBox AIL5 Orchestration & FrameworksSpeculative
OpenRouterL4 Models & TrainingGrowth
OpenSearchL3 Data & StorageDominant
Oracle CloudORCLL2 Cloud & VirtualizationGrowth
OrkesL5 Orchestration & FrameworksSpeculative
Palantir TechnologiesL6 Applications & ProductsEnterprise Platforms & WorkflowDominant
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