# Orange Collective

> The AI-native YC alumni fund. In your corner for demo day and beyond — investing in breakout Y Combinator founders building in AI infrastructure and applied AI.

Orange Collective is an early-stage investment fund run by YC alumni. We back founders straight out of Y Combinator, with a focus on AI infrastructure, applied AI, developer tools, and vertical and full-stack AI. The public portfolio below lists every company we've invested in.

## Portfolio

- [Portfolio index](https://orangecollective.vc/portfolio): Browse the full portfolio. Filter by YC batch, industry, region, or group partner.

## Tools

- [The Unicorn Ratio](https://orangecollective.vc/unicorn-ratio): Portfolio-construction calculator for YC investors. Uses the Kelly Criterion and Binomial Distribution to estimate how many companies to back per batch and how to size each check.

## Memos

- [Apollo Atomics (P26)](https://orangecollective.vc/memos/apollo-atomics): Why Orange Collective backed Apollo Atomics — compact pressurized water reactors built around a steam generator 20x smaller than convention, making the full plant 40x more compact, factory-built, truck-transportable, and deployable in under 24 months on proven PWR technology and off-the-shelf fuel.
- [Starcloud (S24)](https://orangecollective.vc/memos/starcloud): Why Orange Collective backed Starcloud — orbital data centers running real GPUs in low Earth orbit, with abundant solar power and passive radiative cooling for AI training and inference.
- [Sazabi (P26)](https://orangecollective.vc/memos/sazabi): Why Orange Collective backed Sazabi — an AI-native observability platform that replaces Datadog with a purpose-built agent, its own storage layer, and a chat interface instead of dashboards.
- [Superset (P26)](https://orangecollective.vc/memos/superset): Why Orange Collective backed Superset — the open-source, CLI-based agentic IDE for tokenmaxxers, and the long-arc platform for software factories that pull work upstream from Linear, GitHub, and Slack into hundreds of parallel agents.
- [Didit (W26)](https://orangecollective.vc/memos/didit): Why Orange Collective backed Didit — an all-in-one identity platform unifying ID verification, liveness, biometrics, AML, and authentication in a single low-latency stack with transparent pay-per-use pricing.
- [General Legal (W26)](https://orangecollective.vc/memos/general-legal): Why Orange Collective backed General Legal — the AI-native law firm purpose-built for growth-stage companies, replacing fragmented legal stacks with a single AI-augmented partner.
- [Luel (W26)](https://orangecollective.vc/memos/luel): Why Orange Collective backed Luel — turning everyday words and actions into usable training data for the next generation of AI models.
- [Overshoot (W26)](https://orangecollective.vc/memos/overshoot): Why Orange Collective backed Overshoot — AI infrastructure purpose-built for real-time vision applications running at the edge.
- [Bolna AI (F25)](https://orangecollective.vc/memos/bolna-ai): Why Orange Collective backed Bolna AI — voice AI infrastructure built for India's next billion users, optimized for the languages, accents, and channels of emerging markets.
- [Sava (F25)](https://orangecollective.vc/memos/savahq): Why Orange Collective backed Sava — building the future of trusts with an AI-native platform that replaces the manual, paper-driven workflows of legacy trust administration.
- [Unsiloed AI (F25)](https://orangecollective.vc/memos/unsiloed-ai): Why Orange Collective backed Unsiloed AI — a vision-first API for parsing complex multimodal documents into LLM-ready structured data at scale.
- [Halluminate (S25)](https://orangecollective.vc/memos/halluminate): Why Orange Collective backed Halluminate — data and RL environments to automate knowledge work.
- [Magnetic (S25)](https://orangecollective.vc/memos/magnetic): Why Orange Collective backed Magnetic — an AI tax preparer for CPA firms.
- [Autumn (S25)](https://orangecollective.vc/memos/autumn): Why Orange Collective backed Autumn — open-source billing infrastructure for AI startups.
- [Airweave (P25)](https://orangecollective.vc/memos/airweave): Why Orange Collective backed Airweave — an open-source context retrieval layer for AI agents.
- [Cua (P25)](https://orangecollective.vc/memos/cua): Why Orange Collective backed Cua — a cloud desktop for every agent.
- [Vybe (P25)](https://orangecollective.vc/memos/vybe): Why Orange Collective backed Vybe — secure internal apps built by AI in seconds, powered by your data.
- [Promptless (W25)](https://orangecollective.vc/memos/promptless): Why Orange Collective backed Promptless — an AI teammate that automatically updates customer-facing docs.
- [Browser Use (W25)](https://orangecollective.vc/memos/browser-use): Why Orange Collective backed Browser Use — the leading open-source web agent project (50k stars in 3 months).
- [Leaping AI (W25)](https://orangecollective.vc/memos/leaping-ai): Why Orange Collective backed Leaping AI — AI voice and texting agents.
- [Mastra (W25)](https://orangecollective.vc/memos/mastra): Why Orange Collective backed Mastra — the JavaScript framework for building AI agents, from the Gatsby devs.

## Companies

- [Exosat (S26)](https://orangecollective.vc/portfolio/exosat): Building a sovereign Starlink
- [Akkari (P26)](https://orangecollective.vc/portfolio/akkari): Autonomous Customer Operations
- [Apollo Atomics, Inc. (P26)](https://orangecollective.vc/portfolio/apollo-atomics-inc): We make the most compact nuclear reactors
- [Sazabi (P26)](https://orangecollective.vc/portfolio/sazabi): The AI-native observability platform for fast-moving engineering teams
- [Superset (P26)](https://orangecollective.vc/portfolio/superset): Building the platform for software factories
- [Didit (W26)](https://orangecollective.vc/portfolio/didit): Infrastructure for identity and fraud.
- [General Legal (W26)](https://orangecollective.vc/portfolio/general-legal): Elite AI law firm for high growth companies
- [Luel (W26)](https://orangecollective.vc/portfolio/luel): Turning everyday words and actions into usable training data.
- [Overshoot (W26)](https://orangecollective.vc/portfolio/overshoot): AI Infra for real-time vision applications
- [Bolna AI (F25)](https://orangecollective.vc/portfolio/bolna-ai): Voice AI to enable India's next billion
- [Casey (F25)](https://orangecollective.vc/portfolio/casey): Casey is an AI-native commercial insurance brokerage
- [Metorial (F25)](https://orangecollective.vc/portfolio/metorial): Agentic infrastructure to power AI-native companies.
- [Moss (F25)](https://orangecollective.vc/portfolio/moss): Real-time semantic search for Conversational AI
- [s2.dev (F25)](https://orangecollective.vc/portfolio/s2-dev): API for unlimited, durable, real-time streams
- [Sava (F25)](https://orangecollective.vc/portfolio/savahq): Building the future of trusts
- [Unsiloed AI (F25)](https://orangecollective.vc/portfolio/unsiloed-ai): API for parsing multimodal unstructured data
- [Autumn (S25)](https://orangecollective.vc/portfolio/autumn): Billing infrastructure for AI
- [Halluminate (S25)](https://orangecollective.vc/portfolio/halluminate): Data and RL environments to automate knowledge work
- [Magnetic (S25)](https://orangecollective.vc/portfolio/magnetic): AI Tax Preparer for CPA firms
- [Airweave (P25)](https://orangecollective.vc/portfolio/airweave): The open-source context retrieval layer for agents
- [Cua (P25)](https://orangecollective.vc/portfolio/cua): Give every agent a cloud desktop
- [Vybe (P25)](https://orangecollective.vc/portfolio/vybe): Secure internal apps. Built by AI in seconds. Powered by your data.
- [Browser Use (W25)](https://orangecollective.vc/portfolio/browser-use): Leading open-source web agent project with 50k stars in 3 months
- [Leaping AI (W25)](https://orangecollective.vc/portfolio/leaping-ai): AI voice and texting agents
- [Mastra (W25)](https://orangecollective.vc/portfolio/mastra): The Javascript framework for building AI agents, from the Gatsby devs
- [Promptless (W25)](https://orangecollective.vc/portfolio/promptless): An AI teammate that automatically updates your customer-facing docs
- [Alex (F24)](https://orangecollective.vc/portfolio/alex): The Cursor for Xcode
- [Apolink (F24)](https://orangecollective.vc/portfolio/apolink): 24/7 satellite connectivity in low Earth orbit
- [Archil (F24)](https://orangecollective.vc/portfolio/archil): The high-performance file system that connects AI to data
- [attimet (F24)](https://orangecollective.vc/portfolio/attimet): we predict stuff
- [Beglaubigt.de (F24)](https://orangecollective.vc/portfolio/beglaubigtde): The legal back-office for European founders - the incorporation API…
- [Charm (F24)](https://orangecollective.vc/portfolio/withcharm): Charm is the universal payments app — send money to anyone.
- [CollectWise (F24)](https://orangecollective.vc/portfolio/collectwise): Automating consumer debt collection with AI
- [CTGT (F24)](https://orangecollective.vc/portfolio/ctgt): The deterministic layer for frontier intelligence
- [Darkgrade (F24)](https://orangecollective.vc/portfolio/darkgrade): Let your camera understand the world
- [Durate (F24)](https://orangecollective.vc/portfolio/durate): Automated physician scheduling
- [General Learning (F24)](https://orangecollective.vc/portfolio/general-learning): AI tutors for students.
- [Keye (F24)](https://orangecollective.vc/portfolio/keye): The Smartest Private Equity Investor
- [Revi (F24)](https://orangecollective.vc/portfolio/revi): AI-enabled M&A deal origination
- [Anara (S24)](https://orangecollective.vc/portfolio/anara): AI for researchers
- [Ångström AI (S24)](https://orangecollective.vc/portfolio/angstrom-ai): Gen AI molecular simulations that reproduce wetlab results
- [Ares Industries (S24)](https://orangecollective.vc/portfolio/ares-industries): Building low-cost cruise missiles
- [Capitol AI (S24)](https://orangecollective.vc/portfolio/capitol-ai): Capitol: the sovereign operating system for intelligence.
- [Corgi Insurance (S24)](https://orangecollective.vc/portfolio/corgi-insurance): Corgi is building an AI financial infrastructure company
- [DigitalCarbon (S24)](https://orangecollective.vc/portfolio/digitalcarbon): Transform Images And Videos Into Immersive 3D With AI
- [Domu Technology Inc. (S24)](https://orangecollective.vc/portfolio/domu-technology-inc): AI Agents for collections
- [Ember Robotics (S24)](https://orangecollective.vc/portfolio/ember-robotics): Datadog for robots
- [Fuse (S24)](https://orangecollective.vc/portfolio/fuse-2): AI-powered workflow automation for US healthcare providers.
- [Hamming AI (S24)](https://orangecollective.vc/portfolio/hamming-ai): Complete QA platform for voice agents
- [Henry (S24)](https://orangecollective.vc/portfolio/henry-2): Automating Deal Decks for Commercial Real Estate Brokers
- [Hexclave (S24)](https://orangecollective.vc/portfolio/hexclave): The user infrastructure platform
- [Keet (S24)](https://orangecollective.vc/portfolio/keet): An app to create courses on anything.
- [Kontigo (S24)](https://orangecollective.vc/portfolio/kontigo): USDC-Smart Neobank for Latinos.
- [Ligo Biosciences (S24)](https://orangecollective.vc/portfolio/ligo-biosciences): Enzyme design models.
- [mdhub (S24)](https://orangecollective.vc/portfolio/mdhub): AI-native operating system for behavioral health clinics.
- [Miru (S24)](https://orangecollective.vc/portfolio/miru-ml): Config Management for Robotics
- [Modus (S24)](https://orangecollective.vc/portfolio/modus): Unlock revenue per employee with AI-powered headcount management
- [OrgOrg (S24)](https://orangecollective.vc/portfolio/orgorg): Organizational productivity suite for companies
- [Outerport (S24)](https://orangecollective.vc/portfolio/outerport): AI Electromechanical Process Engineers for Heavy Industries
- [Overlap (S24)](https://orangecollective.vc/portfolio/overlap): Multimodal AI agents for video
- [Parahelp (S24)](https://orangecollective.vc/portfolio/parahelp): Build an AI support agent that can use all your tools
- [Rewbi (S24)](https://orangecollective.vc/portfolio/rewbi): Rewbi uses AI to increase grid-connected battery storage revenue 2x
- [Saphira AI (S24)](https://orangecollective.vc/portfolio/saphira-ai): The Enablement Layer for Physical AI
- [Saturn (S24)](https://orangecollective.vc/portfolio/saturn): Compliance and back office workflows for Wealth Managers.
- [Simplex (S24)](https://orangecollective.vc/portfolio/simplex): AI agents to enroll providers with payors
- [Starcloud (S24)](https://orangecollective.vc/portfolio/starcloud): Data centers in space
- [TaxGPT (S24)](https://orangecollective.vc/portfolio/taxgpt): AI tax assistant for professionals and businesses
- [Unsloth AI (S24)](https://orangecollective.vc/portfolio/unsloth-ai): Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.
- [winfunc (S24)](https://orangecollective.vc/portfolio/winfunc): ai-native security engineering for mission critical codebases
- [ZeroPath (S24)](https://orangecollective.vc/portfolio/zeropath): Automatically find and fix your software vulnerabilities
- [Andy AI (W24)](https://orangecollective.vc/portfolio/andy-ai): Faster clinical documentation for home health nurses
- [Argon AI, Inc. (W24)](https://orangecollective.vc/portfolio/argon-ai-inc): AI for Pharma Intelligence
- [AveryIQ (W24)](https://orangecollective.vc/portfolio/averyiq): AI Copilot for Property Managers and Landlords
- [camelAI (W24)](https://orangecollective.vc/portfolio/camelai): AI software engineer that lives on its own computer
- [ego (W24)](https://orangecollective.vc/portfolio/ego): AI applied research lab building synthetic sapience; human-like AI
- [Eris Biotech (W24)](https://orangecollective.vc/portfolio/eris-biotech): Our drugs engage the immune system to fight tumors
- [Garage (W24)](https://orangecollective.vc/portfolio/garage-2): Marketplace for America's most essential assets
- [Ocular AI (W24)](https://orangecollective.vc/portfolio/ocular-ai): Applied AI Data Research Lab Encoding Human Expertise into Machines…
- [OpenFoundry (W24)](https://orangecollective.vc/portfolio/openfoundry): The fastest developer experience for building on open source AI.
- [PointOne (W24)](https://orangecollective.vc/portfolio/pointone): AI Time Platform for Law Firms
- [Powder (W24)](https://orangecollective.vc/portfolio/powder): AI Agents for precise document analysis
- [Risotto (W24)](https://orangecollective.vc/portfolio/risotto): Risotto auto-solves IT support requests using AI
- [ROE (W24)](https://orangecollective.vc/portfolio/roe): AI for risk and compliance
- [Spark (W24)](https://orangecollective.vc/portfolio/spark): AI-powered workflows for energy infrastructure
- [TrueClaim (W24)](https://orangecollective.vc/portfolio/trueclaim): Transparent, AI-powered healthcare TPA.
- [Tuesday Labs (W24)](https://orangecollective.vc/portfolio/tuesday-labs): Delightful robots
- [Velorum Therapeutics (W24)](https://orangecollective.vc/portfolio/velorum-therapeutics): Breakthrough medicines unlocking the biology of heme
- [Verse Therapy (W24)](https://orangecollective.vc/portfolio/verse-therapy): Connecting All Ages with Speech Language Pathologists
- [Zaymo (W24)](https://orangecollective.vc/portfolio/zaymo): Interactive email builder for ecommerce brands
- [Accend (S23)](https://orangecollective.vc/portfolio/accend): AI agents for commercial underwriting at banks and fintechs
- [AgentCollect (S23)](https://orangecollective.vc/portfolio/agentcollect): B2B debt collection powered by AI agents
- [Andromeda Surgical (S23)](https://orangecollective.vc/portfolio/andromeda-surgical): Autonomous surgical robots
- [Certainly Health (S23)](https://orangecollective.vc/portfolio/certainly-health): Marketplace to book doctors and avoid surprise bills
- [Decoda Health (S23)](https://orangecollective.vc/portfolio/decoda-health): The all-in-one EMR built for med spas and elective care
- [Docsum (S23)](https://orangecollective.vc/portfolio/docsum): AI contract repository
- [Fiber AI (S23)](https://orangecollective.vc/portfolio/fiber-ai): The freshest data APIs for AI sales, recruiting, & growth products
- [Kobalt Labs (S23)](https://orangecollective.vc/portfolio/kobalt-labs): AI-powered risk and compliance for financial institutions
- [MICSI (S23)](https://orangecollective.vc/portfolio/micsi): Higher resolution MRI with faster scan times.
- [PeerDB (S23)](https://orangecollective.vc/portfolio/peerdb): Fast, native ETL for Postgres 🐘 🚀
- [Reworkd (S23)](https://orangecollective.vc/portfolio/reworkd): The simplest way to extract web data at scale
- [Sohar Health (S23)](https://orangecollective.vc/portfolio/sohar-health): AI-powered insurance verification to boost patient conversion.
- [Strada (S23)](https://orangecollective.vc/portfolio/strada): AI agents that run insurance operations
- [Sweetspot (S23)](https://orangecollective.vc/portfolio/sweetspot): AI for Government Contracting.
- [Venta AI (S23)](https://orangecollective.vc/portfolio/venta-ai): The compliant AI colleague for sales teams in Europe
- [VetRec (S23)](https://orangecollective.vc/portfolio/vetrec): AI Scribe for veterinarians. Saving time and improving patient care.
- [Common Paper (W23)](https://orangecollective.vc/portfolio/common-paper): The SAFE for commercial contracts
- [Conduit (W23)](https://orangecollective.vc/portfolio/conduit): The operating system for shipping and receiving.
- [Fastgen (W23)](https://orangecollective.vc/portfolio/fastgen): Webflow for the Backend
- [Fern (W23)](https://orangecollective.vc/portfolio/fern): Instantly offer SDKs and API Docs
- [Glass Health (W23)](https://orangecollective.vc/portfolio/glass-health): AI-Powered Clinical Decision Support & Ambient Scribing
- [Hammr (W23)](https://orangecollective.vc/portfolio/hammr): Rippling for the Construction Industry
- [loopfour (W23)](https://orangecollective.vc/portfolio/loopfour): Workflow automation, without AI hallucinations.
- [Matano (W23)](https://orangecollective.vc/portfolio/matano): Cloud Native SIEM (alternative to Splunk/Elastic)
- [Middleware (W23)](https://orangecollective.vc/portfolio/middleware): AI-based full stack observability platform
- [Pledge Health (W23)](https://orangecollective.vc/portfolio/pledge-health): AI RCM assistant that handles any insurance task on payer portals for…
- [Trigger.dev (W23)](https://orangecollective.vc/portfolio/trigger-dev): Build and deploy fully‑managed AI agents and workflows
- [Trigo (W23)](https://orangecollective.vc/portfolio/trigo): Rent verification API for landlords and lenders
- [Unify (W23)](https://orangecollective.vc/portfolio/unify): AI teammates for everyone else 🤖
- [Vellum (W23)](https://orangecollective.vc/portfolio/vellum)

## Optional

- [Sitemap](https://orangecollective.vc/sitemap.xml): XML sitemap of all public pages.