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Trellus delivers simple coaching prompts to your salespeople in real time as they speak to prospects. Prompts are delivered in response to what is happening in a conversation. The goal of these prompts is to get more reps achieving quota and to reduce the time it takes to start attaining quota. Prompts are action-oriented steps toward empathetic listening and effective discovery. Examples include 'pause' (when talking too much), 'set next steps' (when wrapping up a call without them), and 'ask current state' (when encountering objections). Trellus is backed by Y Combinator and founded by former MIT researchers.
New York, NY, USA1-50 employees
Trendex.gg is a next-gen fan engagement platform built at the intersection of sports, entertainment, and applied technology. We partner directly with world-class athletes and celebrities to create official digital fan passes, backed by real stars—then use technology to automate and personalize the fan-talent relationship at scale. Fans can get and use these official passes across Trendex’s growing ecosystem: from IRL rewards like signed memorabilia and meet-and-greets, to online experiences to smart, automated fan journeys (content, perks, access, loyalty) powered by tech—so every supporter feels recognized, rewarded, and closer to the athlete they follow. With Trendex, fans don’t just watch the game—they participate in it. Join us in building a fair, transparent, and athlete-first future for sports and entertainment.
San Francisco, CA, USA1-50 employees
Trially AI provides an AI-native clinical trial recruitment platform that leverages agentic AI to match, engage, and enroll qualified patients. Targeting research sites, CROs, and pharma sponsors, the platform reduces screen failures and accelerates study enrollment. The company operates as a B2B software provider in the clinical research market.
$4.7M11-50 employees
Healthcare AIAI ApplicationB2B SaaSSeed$1M-$10M
Infrastructure for search teams building retrieval and RAG. Trieve combines search language models with tools for tuning ranking and relevance. Building excellent search is difficult and can take months to implement then even more time to maintain. Trieve offers production-ready infrastructure that works out of the box to help search teams build adjustable AI search and RAG into their products. With tools for custom models, relevancy weighting, date-recency biasing, semantic full-text hybrid search, recommendations, and more Trieve covers the full spectrum of what a team wants from their discovery infrastructure.
San Francisco, CA, USA1-50 employees
Trigger.dev is the open source platform for building AI agents and workflows in TypeScript. Long-running tasks with retries, queues, full observability, and elastic scaling. Previously, the founders built JSON Hero, an open source JSON viewer that is currently used by more than 35k developers a month. Eric was CTO of Code School, an early code learning platform that was acquired in 2015. Matt created two iPad apps that won Apple’s App of the Year.
London, England, United Kingdom1-50 employees
Trigo aggregates consumer rent history to help landlords approve better tenants and lenders write more loans. No solution exists to consistently furnish this rent verification to landlords and lenders today. The largest database has only 3% coverage of rent data. Trigo is a Consumer Reporting Agency (CRA) that provides this missing rent data set through a real-time API and web application. We are repeat founders with consumer data and finance experience across Harvard, Citigroup, Experian, and Amazon.
New York, NY, USA; Remote1-50 employees
Trim is building a general intelligence AI model that can simulate real-world physical systems evolving over time. For example, given the starting position of waves on a beach, the model generates how those waves move forward in time.
San Francisco, CA, USA1-50 employees
Triply (Formerly Tripitaca) is the operating system for travel businesses in Africa. We eliminate operational chaos by unifying payments, Invoicing, payroll, accounting, operations, and more into a single platform allowing travel businesses to execute and sell more efficiently.
Nairobi, Nairobi County, Kenya1-50 employees
TrueBiz helps financial service providers reduce manual review during business onboarding. We add color to the company's background with 250+ data points on the company from around the web (such as industry and address), and summarize key risk indicators. The process takes seconds – not days, so financial service providers can efficiently meet risk requirements and onboard new businesses faster.
New York, NY, USA; Remote1-50 employees
TrueClaim processes all payments between healthcare providers and companies that self-fund their insurance. TrueClaim's AI-enabled engine adjudicates and continuously reviews 100% of medical claims to save at least 7% of healthcare costs.
San Francisco, CA, USA; Remote1-50 employees
Truewind is a technology company based in San Francisco developing a digital staff accountant. Powered by AI, Truewind is a digital staff accountant that never sleeps, never gets sick, and always does its work. Completely predictable capacity planning. Automate data categorization, supporting documentation collection, and client follow-up. Truewind’s AI agents will follow up on outstanding action items while the accountant can work on strategic tasks. This is fully integrated and unified across your accounting operations. We make it easy to get work done and get visibility into your team’s processes. Trusted by over 100 customers, including accounting firms EisnerAmper and Frank Rimerman, along with fast-growing companies such as Wefunder, StartPlaying and Mozart Data. We’re backed by the industry leaders of accounting and AI, Rho Capital, Thomson Reuters Ventures, Pathlight Ventures, Fin Capital, and Y Combinator.
San Francisco, CA, USA1-50 employees
Truffle AI makes it easy for developers to integrate AI agents into any software application. We do this by exposing agents as simple APIs that can be called from anywhere. Developers have used Truffle to add customer support agents into WhatsApp and analytics agents into Slack.
San Francisco, CA, USA1-50 employees
Trusty is an agent-to-agent matchmaking network that searches every home, regardless of whether it's on the market. This means fresh inventory for buyers, private offers for homeowners, and happy real estate agents.
San Francisco, CA, USA; Remote1-50 employees
Truva handles the busywork intelligently saving your sales team hours each week, so they can focus on what matters most - building and closing deals. Many teams have seen up to 25% increase in sales where Truva's AI agents automated tedious tasks such as email follow up, CRM data entry, and process optimizations.
San Francisco, CA, USA1-50 employees
Trébol provides the document AI infrastructure for modern financial services - from KYB to mortgage underwriting - turning weeks of manual processing into minutes.
Bogotá, Bogota, Colombia1-50 employees
Tuesday makes delightful robots that tidy your home for you
New York, NY, USA1-50 employees
Turntable allows less technical analysts to build their own data pipelines. Companies use our AI-native workspace to scale their analytics without hiring more engineers. If you use DBT or Airflow- or you're building out your data stack for the first time- please reach out!
New York, NY, USA1-50 employees
Tushen Zhihe is an artificial intelligence protein design service provider. The company is committed to offering customers a universal, lightweight, and controllable protein design solution.
Healthcare AIAI Application
Tusk (YC W24) is an AI agent that helps developers generate unit and integration tests with codebase context. Tusk sits in CI and provides automatic coverage whenever software engineers raise a PR. Engineering teams use Tusk to prevent critical regressions while increasing test coverage.
San Francisco, CA, USA1-50 employees
At Tuva Health, we make open source software that cleans and transforms messy healthcare data. We’re founded by Aaron Neiderhiser and Coco Zuloaga, former senior execs from Health Catalyst and Strive Health. We realized data transformation and data quality is the fundamental problem preventing the healthcare industry from building scalable data products. We launched Tuva and joined the W22 batch of Y Combinator to solve this problem for the entire industry. Since January 1st, we signed our first customer (paying $10k per month) and completed the first major release of the Tuva Project. At Tuva, our goal is to (1) become the open standard for healthcare data transformation and (2) build the data network for multi-site benchmarking, research, and machine learning on top of this open standard.
Salt Lake City, UT, USA; Remote1-50 employees
Twain offers an AI-powered writing assistant for emails, delivered as a Berlin-based SaaS product aimed at sales outreach teams to craft effective outreach messages and boost engagement. Revenue is generated via subscription and usage of an AI-driven copy assistant, with differentiation centered on real-time AI-generated copy and outreach productivity.
Berlin, Germany$2.63M1-10 employees
Sales TechAI ApplicationB2B SaaSSeries A$1M-$10M
Building a modern alternative to Salesforce: https://github.com/twentyhq/twenty
San Francisco, CA, USA1-50 employees
Twine makes sure your small business never misses a potential customer because of a missed call. We use conversational AI to engage customers over text, finding out what they need and booking them for a service.
San Francisco, CA, USA1-50 employees
We're building an AI consumer underwriting automation service.
San Francisco, CA, USA1-50 employees
We help businesses capture what resonates, make it repeatable, and turn attention into lasting momentum. With Typa, you can build a scalable inbound growth engine with content that compounds. We make this possible through three pillars: 1. A tone of voice that always sounds like you. Typa learns your style, cadence, and perspective so every piece of content reflects your authentic voice. 2. A knowledge base that updates in real time. Your digital clone continuously absorbs everything you say and create, ensuring your content always reflects your latest thinking. 3. A personal ghostwriter that’s always just a call away. Puff is your 24/7 AI ghostwriter and strategist, available via phone or WhatsApp whenever you want to brainstorm, plan, or execute. Currently supported channels: X, LinkedIn, Bluesky, and blog/newsletters.
San Francisco, CA, USA1-50 employees
Type.ai is an AI-native document editor designed for long-form professional writing. We make it 10x faster to write high-quality books, novels, essays, screenplays, and long-form content.
New York, NY, USA1-50 employees
Typeless is an AI messaging API designed to facilitate communication for businesses and professionals. Our API generates smart, context-aware response suggestions to enhance messaging platforms in a variety of industries, from real estate to customer support. For example, a real estate platform can use Typeless to automate responses for scheduling property viewings, answering client inquiries, and handling follow-ups. Similarly, a customer service platform can enable agents to respond faster with personalized, AI-driven suggestions for customer questions and issues. You can download our demo messaging app built with the TypeLess API on the app store: https://apps.apple.com/us/app/typeless-ai-messenger/id6478489620
San Francisco, CA, USA1-50 employees
Built to advance human taste to the frontier, TypeOS is the best way to write with AI.
1-50 employees
Typewise is an AI-first customer service platform where orchestrated agents resolve requests end-to-end by taking real actions across your stack. Teams describe outcomes in natural language and the platform compiles them into working automations—no flowcharts, no code. You can safely simulate changes and roll them out step by step. Fortune 500 brands such as Unilever and DPD use Typewise to cut support effort by 50%+ while increasing CSAT and NPS. With 200+ integrations, Typewise reads from and writes to CRM, ERP, and other systems to fully resolve cases, handing off to humans only where they add the most value. Hybrid intelligence enables partial hand-offs, review-before-send, and context-preserving resumption—so teams stay in control. Operate natively within Typewise Ticketing, with optional integrations into your existing CRM or helpdesk systems such as Zendesk, Salesforce, or Freshdesk, and enhance agents with a CRM-embedded copilot. A company-specific AI language model keeps every interaction on-brand. EU-hosted and ISO 27001 certified, Typewise delivers measurable ROI in weeks—so you can start small and scale automation with confidence.
Zürich, ZH, Switzerland1-50 employees
UNISON is building a unified reality headset to dive in and resurface from virtual worlds with new-found value. UNISON is a small team of passionate people from companies like Meta, Sony, Apple and research labs like the IARAI, based in the SF Bay Area and backed by some of the world’s best investors. Learn more about us, our product, and team here: in-unison.com.
Mountain View, CA, USA; San Francisco, CA, USA1-50 employees
Uberduck makes tools high-quality audiovisual content creation tools for product companies, brands, agencies, and musicians. We offer audio generation, image generation, and video generation functionality, including enterprise workflow APIs to power end-to-end video creation experiences. Vocal samples and full songs produced by our text-to-speech, text-to-singing, text-to-rapping, lyric video generation, and voice conversion technologies power: - AI remixes and original songs for musicians ranging from hobbyists to the largest DJs in the world. - Personalized musical content in marketing campaigns. - A variety of music-related consumer experiences built on top of our APIs.
Seattle, WA, USA1-50 employees
Ubicloud is an open source cloud that can run anywhere. Our cloud services include elastic compute, block storage, virtual networking, managed Postgres, K8s, AI inference, and powerful IAM. Ubicloud provides these services on bare metal providers, such as Hetzner, Leaseweb, or AWS Bare Metal. You can self-host our software or use our managed service to reduce your cloud costs by 3-10x.
1-50 employees
Ultra builds practical, general-purpose robots that are deploying—and producing ROI—today. Unlike traditional industrial automation that’s rigid and complex, our robots are zero integration (able to be installed in hours, not weeks) and are highly flexible, capable of quickly learning new tasks and delivering immediate value to customers. Founded by a team of three-time entrepreneurs with a decade of collaboration, Ultra moves fast. We already have robots in the field generating revenue and data, with plans to rapidly scale deployments this year.
New York, NY, USA1-50 employees
Our founder Noah, an experienced tech entrepreneur, was directly impacted by a severe genetic disease when his daughter was diagnosed with Rett Syndrome, a disease that afflicts 1 in 10,000 girls. Using an innovative polytherapy strategy, we’ve successfully improved her quality of life, and have designed new therapeutics that each could be worth billions and together could deliver a cure.
San Francisco, CA, USA1-50 employees
At Undermind, we're building a search engine that can handle extremely complex questions. It’s geared at experts, like research scientists and doctors, who need to find very specific resources to solve high-stakes problems. We’ve rebuilt search from the ground up to address this. Our new approach employs high-quality LLMs to adaptively explore a database, mimicking how a human researcher carefully discovers information. This approach dramatically outperforms (by 10-50x) traditional keyword search and other modern AI-based retrieval methods. Our first target users are the 50 million researchers searching for scientific literature on PubMed and Google Scholar every month. We’ve have paying users across fields like medicine, ML, biotech, finance, and more.
San Francisco, CA, USA
The American healthcare system is complicated. 88% of US adults cite difficulties navigating the healthcare system. The good news is patient advocacy became a covered benefit by Medicare in 2024. Understood Care matches Medicare patients with a healthcare personal assistant (known as a Patient Advocate) at little to no cost to the patient. Patient Advocates help patients patients access care - finding resources, helping fill out paperwork, and much more. Understood Care uses AI and healthcare expertise to deliver the highest quality patient advocacy to the 68 million Medicare patients in the US.
New York, NY, USA1-50 employees
Unhaze is a revenue optimization tool for mid-market B2B teams. Unhaze finds the leads that sales teams are most likely to close right now. We do this by analyzing previous deals and continuously monitoring for similar traits among all our collected company data. By focusing on the right leads (at the right time!), we can almost double win rates.
Copenhagen, Denmark1-50 employees
Launch crypto deposits in minutes. Unifold is a developer-first API + SDK that makes it easy for any app to accept on-chain deposits – across any chain and token – with less than 10 lines of code. We handle the full deposit flow so teams can ship faster and give users a smooth experience that actually works. If you’re building a consumer-facing on-chain product and want best-in-class deposits (or want to support more chains fast), we’d love to work with you.
New York, NY, USA1-50 employees
Unisson is building trusted AI subject-matter experts for teams that are responsible for customer deployments (technical customer success, implementation, sales engineering). Within 20 minutes, our agents learn to use any product and can be used by teams in Slack, text, or email. Our agents gather requirements and context from existing tools enabling them to handle complex tasks like customer health audits, onboarding, product administration, and custom integrations. With Unisson, customer-facing teams have 24/7 access to an AI SME, allowing them to scale and save thousands of hours.
San Francisco, CA, USA1-50 employees
Univerbal is an AI-powered language learning app that helps people boost their confidence simply by talking. In unscripted and dynamic conversations, users can talk about anything they’d like using the microphone, with the AI responding as it adapts to their level and skills. Each user gets a personal AI Language Tutor that creates a custom learning plan based on the language goals they’d like to work towards and their own interests, offers instant corrections after every message and helps users in their own language. Based in the country with 4 official languages, Switzerland, in 2024 we were selected as one of WIRED’s Hottest 100 Startups in Europe.
Zürich, ZH, Switzerland1-50 employees
Unlayer makes embeddable email and web editing software. We provide the essential editing tools that companies need to create successful marketing and engagement campaigns. If you want to add a rich email template editor, web page builder, or popup builder into your application, try Unlayer.
San Francisco, CA, USA1-50 employees
Unravel Carbon is a leading sustainability data management platform, used in 48+ countries. It uses AI/ML to help enterprises transform any operational data into full carbon supply chain data, helping them measure, track and report on their sustainability performance. It is already serving some of the world’s largest companies and is backed by Sequoia and Y Combinator.
Singapore, Singapore1-50 employees
Unsaddl enables employers to offer education benefits (student loan and 529 plan contributions and tuition reimbursement) and leave of absence management
New York, NY, USA1-50 employees
AI teams spend 6+ months building document workflows, yet fewer than 10% ever reach production. Generic LLM parsers and OCR collapse on multimodal documents with text, tables, images, and charts. Poor parsing and suboptimal chunking cripple RAG pipelines and downstream automation. Unsiloed AI has built state-of-the-art vision models which serves as the infrastructure layer for turning unstructured data into structured, queryable, and LLM-ready assets. Our APIs are already parsing hundreds of thousands of documents for startups and NASDAQ-listed enterprises, powering vertical AI solutions across industries. On public benchmarks, Unsiloed AI consistently outperforms solutions from LlamaIndex, Gemini, Mistral, and Unstructured.io among others.
San Francisco, CA, USA1-50 employees
Unsloth helps builders create custom models better & faster using RL and custom kernels. We're developing the all in one solution to help you create highly-accurate custom models 30x faster with 90% less memory use. With over 10 million monthly model downloads and 40K GitHub stars, our mission is to make training and open-source the best it can be!
San Francisco, CA, USA1-50 employees
There are billions of dollars of hospital waste caused by inefficient, disconnected supply chains and finance data. Today, clinics are facing unprecedented backorders, recalls, and purchase verticals (medical devices, SaaS, security, commodities). We are building a single product to 10x a fragmented industry with each tool built almost 20 years ago.
San Francisco, CA, USA1-50 employees
Digital Clinics are facing an existential problem - fix margins, or die. We’ve built a clinic, and seen the tech they need to fix their margins. Now we’re bringing this tech back to other clinics. For our first customer, we’re projected to generate $2.5M in revenue.
1-50 employees