Nov 21, 2025 10:34:00 AM

Companies


Showing 2601-2625 of 5661 companies
YC S21
Lightly logo

Lightly

Help ML teams label the right data

When ML teams send their data to companies like Scale.ai for labeling, most can only afford to label 1% or less of their datasets. But today they don’t have a good way to pick which 1% to label. We help them pick the best 1% of their data to label. By labeling the most representative data, they significantly improve model accuracy at the same cost.

YC W22
Lightmeter logo

Lightmeter

Managed Sales Email Delivery For Cold Outreach

Lightmeter is turn-key email outreach infrastructure for startups, combining network, platform, and expert advice. It integrates with sales tools like Apollo, replacing Google and Microsoft for email delivery. No change in tooling or workflow required. Lightmeter gets mail into inboxes, scalably and sustainably, while transparently reporting on performance. Plans from 50 to 7,500 outreach emails per day.

YC F24
Lightscreen AI logo

Lightscreen AI

Voice + video AI interviewer

Lightscreen’s voice + video AI interviewer enables companies to identify and invest in genuinely skilled candidates. It's already being used by high-growth startups and recruiting agencies to screen technical candidates. We provide companies with a voicebot that can run a full-length technical interview, does smart interruptions, and multi-modal cheating detection. The AI provides the company rubric-based, rich candidate evaluation in minutes and can be fully customized to ask questions and evaluate based on the company's needs.

YC S19
Lightwell logo

Lightwell

YC S24
Ligo Biosciences logo

Ligo Biosciences

AI designed enzymes for the chemical industry.

We are building the next generation of deep-learning models for enzyme design to slash the cost of chemical manufacturing. The $6 trillion chemical industry is flawed: It produces 20% of industrial greenhouse gases, and is responsible for 15% of global energy usage. Enzymes offer a far more sustainable alternative to chemical synthesis and have already revolutionised how a select few chemicals are produced. The problem is each enzyme takes years of trial and error to develop. Our enzyme models learn the principles of catalysis, allowing us to design enzymes for each reaction, in days not years. We currently have $4.3M of LOIs and have completed our first $20k contract.

YC S06
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Likebetter

An online personality test game, where you look at two photos and choose which one you “Like Better”.

YC S25
Lilac logo

Lilac

Spot GPUs that use idle GPUs from enterprises

Lilac taps idle GPUs from cloud providers and enterprises, giving startups and researchers cheaper compute while letting companies monetize unused capacity. Fully automated with Kubernetes integration.

YC S24
Lilac Labs logo

Lilac Labs

We automate the person taking orders at drive-thrus with a voice AI

At Lilac, we automate the person taking order at the drive thru with a voice AI. We're building this for Quick Service Restaurants (QSRs) dealing with an historical labor shortage and rising wages. Previous attempts at drive-thru voice ordering are costly to implement and have failed to deliver the accuracy and latency needed. It's now possible to build a voice interface that passes the threshold for a great customer experience. In the United States, there are 200,000 Drive-Thrus handling 6 Billion visits a year. At 3 minutes per order, that's 34,000 human years spent on taking orders annually. Per location, on average we can deliver around $100,000 of value in terms of labor savings, upsell revenue lift, and training costs.

YC W20
Lilia logo

Lilia

Modern egg freezing for half the cost in half the time with top docs

a16z SR005
Limy AI logo

Limy AI

Limy puts brands in control of agent interactions in the agentic web.

Limy puts brands in control of agent interactions in the agentic web. In just six months, we’ve scaled to over $1.2M ARR, working with Fortune 500 companies, P&G brands, large automotive brands, the biggest media groups in the US, and some of the world’s most influential brands. Recently launched our self serve and have seen over 70 sign ups in 6 hours.

YC S23
Linc. logo

Linc.

AI Copilot for Shippers, Carriers and Brokers

Linc is an AI agent to automate workflows in logistics. Our first product is an AI Copilot for logistics vendors that parses inbound (emails + documents + spreadsheets) and syncs this data with systems of record (ERPs/spreadsheets).

YC S23
Line.Build logo

Line.Build

Incentives and financing for energy efficiency upgrades

Line.Build is software for contractors to seamlessly find and apply for financing and rebates for energy efficiency upgrades. With buildings accounting for almost 40% of US GHG emissions, retrofitting for efficiency is essential to reduce emissions and load on the grid, but expensive. Over $80B of rebates, incentives and financing is available but hyper-fragmented across utilities, federal funds, grants, and green lending programs. Line consolidates disparate sources of funds and simplifies finding and applying for incentives and financing. Line is designed to be user-friendly, available in multiple languages, and accessible on both web and mobile devices. Additionally, it provides an API that seamlessly integrates with existing quoting tools, enhancing efficiency and convenience.

YC S19
LineLeap logo

LineLeap

LineLeap gets customers to the fun, faster.

LineLeap gets customers to the fun, faster. On LineLeap’s mobile app customers purchase LineSkip passes, drinks, cover, and event tickets, at over 400 of the top nightlife venues in the country. Venues use LineLeap’s technology to create new revenue streams and market to their customers through push notifications, in-app messages, and email campaigns. LineLeap participated in Y combinator in the summer of 2019 and has acquired over 1 Million customers to date. LineLeap's long term vision is to be the must-have platform for all purchases, discovery, & fun at the world’s top venues & events while being the first choice for brands to connect with consumers.

YC X25
LineWise logo

LineWise

AI platform to train frontline workers to operate and fix issues

LineWise is building an AI assistant for manufacturing teams to operate and resolve production issues, from defects to breakdowns. LineWise automatically extracts frontline know-how from live video recordings, turning them into structured SOPs and training guides. It also ingests generated SOPs, machine manuals, and past breakdown logs to suggest the most probable root causes when issues occur. Operators receive step-by-step guided troubleshooting, and as they confirm outcomes, LineWise learns from each resolution - converting every fix into a reusable playbook and proactively recommending preventive actions to cut future downtime.

YC F24
Lingo.dev logo

Lingo.dev

Open-source, AI-powered i18n toolkit for instant localization.

Lingo.dev helps dev teams use LLMs for app localization and content translation. Lingo.dev Compiler helps React developers localize apps without rewriting the existing code. Lingo.dev CLI helps web and mobile teams use AI for producing perfect translations for their user interfaces and docs. Lingo.dev SDK helps use LLMs for real-time translations.

YC S09
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Lingt

Lingt provided a web-based platform for learning languages leveraging…

Lingt empowers teachers to speak more with their students. Create and manage online speaking assignments for use in the classroom.

YC W23
LinkGrep logo

LinkGrep

AI browser copilot for teams

Modern teams work in the browser. But browsers weren't built for teams 😔. This leads to a bunch of problems like: - Knowledge/info that is hard to find (links that get lost, documentation that gets, buried, silos, etc) - Poor collaboration - Inefficient workflows LinkGrep is an AI browser copilot that solves those problems by making your browser team friendly. Specifically we help teams: 1. 🔗 Keep track of links, documents, and more automatically. With LinkGrep you'll never have to manually add or save a link. 2. 🔍 Find information that matters. LinkGrep connects with your existing tools like Notion and Slack and will automatically suggest relevant information to you as your browse (we have semantic search that you can fallback on). Demo: https://youtu.be/jwcPGDRy4oQ 3. 👥 Collaborate better. LinkGrep lets you leave notes and comments directly on web pages — you won't ever have to copy paste a link into Slack ever again. 4. 🤖 Automate team actions like opening up the right links before a meeting. Never disrupt a meeting to send a link again. Demo: https://youtu.be/an3VKpAWft0

YC W20
Linkana logo

Linkana

The leading SRM platform for LatAm

Linkana helps enterprise companies reduce lead time and costs on supplier onboarding approvals with an easy-to-use and integrated SRM platform.

YC W23
Linum logo

Linum

type text, dream video

Linum builds state-of-the-art text-to-video diffusion models. Over the next ten years, we’re going to witness a shift in animation, tv, and film similar to what we’ve seen with YouTube - where most content will be generated by everyday people. At Linum, we’re using AI to build the tools that will enable this transition. Linum was founded by Sahil Chopra and Manu Chopra - two brothers with 10 years of AI experience. Sahil co-wrote Stanford’s graduate-course on LLMs (Large Language Models). Manu trained RL (Reinforcement Learning) models for anesthesia administration at UCSF. Sign up for our beta at https://www.linum.ai/

YC W21
Lion Pose logo

Lion Pose

Clinical skincare tested on diverse skin, now available in Sephora.

YC S14
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ListRunner

Replaces paper patient lists for doctors.

Listrunner is a service made to share patient information in a highly secure manner between authorized members of a clinical team– physicians, residents, interns, and medical students. Listrunner helps clinicians protect patient information by replacing manual processes, such as printed patient lists, which are untraceable and easily lost. Listrunner offers a secure alternative to unsecure practices, such as the use of SMS messages and camera phones to collect and share patient information between clinicians.

YC S09
Listia logo

Listia

Mobile marketplace for trading used goods.

Listia is a new kind of auction marketplace for giving and getting free stuff. Users list items as auctions, and other users bid on these items using credits instead of money. Credits are earned by signing up, giving away stuff, and being an active member.

YC W17
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LitHit

Smart Target for Shooting Sports

LitHit creates smart shooting targets that light up on impact. Their devices connect to your smartphone and helps improve your skills with real-time analytics and games.

YC W23
LiteLLM logo

LiteLLM

Call every LLM API like it's OpenAI [100+ LLMs]

LiteLLM is an open-source LLM Gateway with 18K+ stars on GitHub and trusted by companies like Rocket Money, Samsara, Lemonade, and Adobe. LiteLLM provides an open source Python SDK and Python FastAPI Server that allows calling 100+ LLM APIs (Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic) in the OpenAI format We have raised a $1.6M seed round from Y Combinator, Gravity Fund and Pioneer Fund

YC S21
Litnerd logo

Litnerd

Reading + Writing Club App for Kids

Litnerd is a kids reading + writing club app that grew by 14x this past school year. Think of us as a modern-day Scholastic, with a heavy IP play. We create original IP with our community + partner brands -> turn them into books, media and learning curriculum, layered with an AI personalized tutor to help kids learn to read and write in a personalized and engaging way. Our product format is a Social and Gamified - with a live weekly community meetup and monthly e-tournaments. - And it works! Litnerd 4x improved the pass rate of students on their annual state Reading (ELA) exam. - STICKY: Kids spend 10-20 minutes on the Litnerd app OUTSIDE of classroom time. - KID AUTHORS: Kids are the authors of the books and Litnerd AI helps illustrate + publish the book. - Built on the Science of Reading - Original IP: all books, media and courseware is original content created and published by Litnerd.