Best Y Combinator AI tools

Perfectly is the first AI-native recruiting agency, founded by ML scientists from TikTok and Meta. It uses large-scale recommender system technology to fill startup roles with candidates who are 2x more likely to pass interviews, typically within 2-4 weeks, which is 4x faster than traditional agencies.

Sheet0 is an AI spreadsheet agent designed to automate and simplify complex data analysis tasks. It acts as a conversational assistant, allowing users to interact with spreadsheets through natural language, perform data scraping, classification, and achieve 100% accurate results effortlessly.

Primer is an AI-powered platform that automates personalized product demos, enabling businesses to accelerate sales cycles and scale their demo operations efficiently. It helps deliver more engaging demonstrations, gain better insights, and reduce friction in the sales process, ultimately leading to faster closures and effortless scalability.

Alai is an AI-powered presentation maker that transforms your ideas into professional, high-quality slide decks in seconds. It streamlines the design process, allowing users to focus on content while ensuring visual consistency and compelling communication.

Nori is an AI health coach that centralizes all your health data from wearables, lab results, and fitness apps. It provides personalized insights to help you understand trends in your sleep, energy, and recovery, empowering you to take control of your health journey. Backed by Y Combinator, Nori focuses on data ownership and privacy.

Orange Slice is a Y Combinator-backed AI platform that revolutionizes B2B lead generation. It employs AI agents to analyze thousands of real-time online signals, identifying companies that are actively seeking your solution. This allows sales teams to engage with highly qualified, in-market prospects at the perfect moment, eliminating guesswork and boosting efficiency.

Exa Laboratories (now Zettascale) is a YC-backed Silicon Valley startup developing state-of-the-art, energy-efficient reconfigurable chips (XPUs) for AI. Their polymorphic computing architecture aims to solve the AI energy crisis by offering superior performance, versatility, and efficiency compared to traditional GPUs and TPUs for both training and inference.

Opennote is a Y Combinator-backed AI tutor integrated directly into your note-taking workspace. It enhances learning by proactively providing feedback, generating visual aids like videos and graphs, and referencing your existing documents from Google Drive and Notion. Designed for students and lifelong learners, it transforms static notes into an interactive, collaborative learning environment, making studying more efficient and effortless without switching apps.

Excellence AI is an adaptive learning platform for math and science, combining personalized daily courses, an interactive AI tutor, and optional human mentorship. Backed by Y Combinator, it focuses on building long-term mastery, discipline, and intrinsic motivation for students, moving beyond traditional curricula to foster a genuine love for learning and deep understanding.

Proception develops advanced humanoid hands, merging robotics and AI to achieve unprecedented dexterity. Their flagship product, ProHand, features human-like precision, adaptive grip, and tactile sensing. Backed by Y Combinator, Proception aims to revolutionize industries like manufacturing, healthcare, and research by enabling robots to perform complex, delicate tasks previously exclusive to humans.

An AI mentor that provides advice and answers questions based exclusively on the principles and essays of Paul Graham, co-founder of Y Combinator. Ideal for entrepreneurs, founders, and developers seeking guidance.

Axal is a Y Combinator-backed AI platform that analyzes legacy codebases to automatically extract functional requirements, user stories, and business logic. It accelerates software modernization by reducing discovery time by up to 85%, enabling teams to understand complex systems in hours instead of months.

eggnog is a Y Combinator-backed applied AI media company creating next-generation content experiences. It develops innovative mobile apps like "Remix" for AI-powered video meme creation and "Time Portal," an immersive historical guessing game. These apps leverage AI to offer unique entertainment and educational engagement.

Den is an AI-powered workspace for macOS that unifies your chats, documents, and AI agents into a single platform. Backed by Y Combinator, it connects to your business tools, understands your company's knowledge, and automates tasks to boost productivity and streamline workflows.

Blaxel is a serverless computing platform designed for AI developers, providing the infrastructure and tools to build, deploy, and scale agentic AI applications efficiently. It offers sandboxed VMs, a unified LLM gateway, and deep observability.

Miyagi Labs is a Y Combinator-backed AI platform that transforms videos, documents, and audio into interactive learning experiences. It automatically generates summaries, quizzes, flashcards, and an AI chat tutor to help students, educators, creators, and enterprises create engaging and effective educational content.

c/ua is a Y Combinator-backed platform providing secure, isolated cloud containers for running Computer-Use AI Agents. It simplifies infrastructure, allowing developers to deploy and manage agentic RPA workflows across macOS, Linux, and Windows with support for multiple LLM providers.

Nia is an advanced AI context layer for coding agents, developed by Nozomio Labs. It enhances AI assistants like Cursor by providing them with unlimited contextual knowledge from your documentation and codebases. This allows the AI to generate more accurate, relevant, and powerful code, effectively breaking the limits of traditional context windows and supercharging developer productivity.

Friday is a Y Combinator-backed AI email client designed to revolutionize your inbox. It learns from your email habits to automatically summarize threads, handle routine responses, and filter out junk mail, acting as a personal assistant to help you manage your email at the speed of thought.

Weavel is an AI-powered storytelling platform for modern companies. It helps businesses define their brand voice, generate consistent and compelling narratives, and scale content creation across marketing, sales, and internal communications.

Briefer is a collaborative data platform featuring a built-in AI analyst. It empowers teams to transform data into actionable insights using SQL, Python, and interactive visualizations within a unified workspace. Designed for both technical and non-technical users, it streamlines data analysis, reporting, and real-time collaboration, accelerating data-driven decision-making. It is backed by Y Combinator and offers both cloud-hosted and self-hosted open-source versions.

bloop is an AI-powered service specializing in modernizing legacy systems by converting COBOL code into human-readable, functionally equivalent Java. It combines LLM-based approaches with compiler accuracy to produce maintainable, extensible, and license-free code. The service helps enterprises escape the constraints of outdated technology, reduce maintenance costs, and accelerate innovation by making their core systems ready for future development.

Martin is a personal AI assistant, like Jarvis, designed to streamline your life by managing tasks, communications, and schedules. Interact with Martin via text, call, email, or Slack to set reminders, send messages, manage your calendar, and automate daily workflows. It integrates seamlessly with your existing apps to boost your productivity.

sixtyfour is an AI-powered sales research platform that deploys intelligent agents to uncover high-quality leads missed by traditional tools. It leverages proprietary data and advanced technology detection to find untapped sales opportunities, providing sales teams with enriched, precisely targeted prospect profiles for effective outreach.