Startup Database

AI Infrastructure Startups 2026 (29 companies)

This page lists all 29 ai infrastructure startups in the AIToolGuide 2026 startups database, taken from the 2026 cohort: Y Combinator's four 2026 batches and the TrustMRR and Indie Hackers listings. The biggest intake here is YC Summer 2026 with 14 companies, and 25 of the 29 list a headquarters in USA. Every listing is free and ranked by the data, not by payment. Click any company for its story, founders and facts.

All 29 ai infrastructure startups in the 2026 database, newest batch first.
CompanyWhat it doesBatchHQ
EpsilabLong horizon RL environments from real-life dataYC Fall 2026San Francisco, CA, USA
HopperInference and post-training for realtime agentsYC Fall 2026San Francisco, CA, USA
isoquantSelf-optimizing inference cloud for faster, cheaper AIYC Fall 2026San Francisco, CA, USA
Liquid EnergySelf contained solar-powered AI inference modules: the NanoDCYC Fall 2026Waterloo, ON, Canada
Munito AIOpen-model inference provider for Europe, private by default.YC Fall 2026Paris, Île-de-France, France; Remote
OpenLake TechnologiesOpenLake deploys, trains, and serves models that update in real time.YC Fall 2026San Francisco, CA, USA
Sentient OSOn-device AI that knows your entire life and does your work overnight.YC Fall 2026San Francisco, CA, USA
BaudAI chips for ultra-fast training and inferenceYC Summer 2026San Francisco, CA, USA
BelvedirAutonomous AI Model TrainingYC Summer 2026San Francisco, CA, USA
Lamb LabsLightning fast chips with hardcoded AI modelsYC Summer 2026San Francisco, CA, USA
LitmusEvals for humansYC Summer 2026San Francisco, CA, USA
Olam LabsCrafting simulations for frontier lab model trainingYC Summer 2026San Francisco, CA, USA
OneTrianglePrefill optimizations for the fastest inferenceYC Summer 2026San Francisco, CA, USA
OpenRelayDistributed, hardware-agnostic AI inferenceYC Summer 2026San Francisco, CA, USA
OrchestraSelf-optimizing neocloud that cuts LLM costs by 100xYC Summer 2026San Francisco, CA, USA
ParasmaReplacing GPUs with human brain cellsYC Summer 2026San Francisco, CA, USA
PRINCEPSAI-native insurance company for the compute economyYC Summer 2026London, England, United Kingdom
RasynMaking chemicals 100,000x fasterYC Summer 2026San Francisco, CA, USA
StoaThe market behind AI hardware.YC Summer 2026San Francisco, CA, USA
TouchmarkMarket for future inference capacityYC Summer 2026San Francisco, CA, USA
TracerCombining open-source AI models for better answers at lower costYC Summer 2026San Francisco, CA, USA
BayMachinesAir-gapped compute for defense contractorsYC Spring 2026San Francisco, CA, USA
ExpanseUnlock wasted GPU capacity.YC Spring 2026London, England, United Kingdom
ReasonBlocksSpecialized models that make your AI agents cheaper and more reliable.YC Spring 2026San Francisco, CA, USA
AnchorheadEvals for frontier research agentsYC Winter 2026San Francisco, CA, USA
AshrEnterprise post-training, monitoring, and continual learning platformYC Winter 2026San Francisco, CA, USA
ChamberThe AIOps Agent for ML TeamsYC Winter 2026Seattle, WA, USA
OvershootWe optimize inference stacks for teamsYC Winter 2026San Francisco, CA, USA
TraverseCustom models and inference, built and run for enterprisesYC Winter 2026San Francisco, CA, USA

Browse the other categories

Vertical AI Startups (149) AI Agent Startups (137) AI DevTools Startups (58) AI Robotics Startups (51) AI Security Startups (25) AI Voice and Audio Startups (17) AI Vision Startups (10) AI Data Startups (8) More AI Startups (29)

Source: AIToolGuide 2026 startups database (513 AI companies), compiled from Y Combinator 2026 batch listings and the TrustMRR and Indie Hackers marketplaces, November 2026.

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