Y Combinator Fall 2026 (F26) Companies

Antimattr is building voice-first interfaces focused on memory and voice productivity, positioned as an ecosystem of products for natural human-machine interaction. Its first product, Project Mnemosyne, is scheduled to begin shipping in Q4 2026.

1 investor

Antropi Robotics develops autonomous CNC factories that automate machining processes to accelerate hardware production. The company operates in the industrial robotics and manufacturing automation sector.

1 investor

Capveon is an AI platform that reads public-record sources — federal, state, and local budgets, board minutes, capital plans, and portals like SAM.gov, USAspending, and Grants.gov — to surface public-infrastructure work before an RFP posts. It serves government contractors and manufacturers, carrying pursuits from early demand signals through bid/no-bid qualification, competitor analysis, price-to-win, compliance review, and proposal drafting.

1 investor

Collar is an AI agent for investment deal teams that automates the deal funnel — sourcing deals against a firm's thesis, ingesting datarooms, running due diligence, sending chaser emails, and drafting financial models, IC reports, and memos while leaving the final investment decision to the user. It serves individual investors, private market firms, and asset managers, running inside the firm's own cloud on SOC 2 Type II and ISO 27001 certified infrastructure.

1 investor

Covera builds ready-to-use AI agents for insurance brokers and captive agents that automate policy servicing tasks such as document intake, quoting across carrier portals, coverage comparison, claims handling, and collections. The agents integrate with agency management systems, CRMs, email, and storage, while keeping binding, pricing, and advice under human review.

1 investor

Degla provides a natural language platform for coordinating autonomous drone fleets for search and rescue, emergency response, infrastructure inspection, and critical field operations. The system automatically plans missions, assigns aircraft, and adapts to real-time conditions without requiring flight plans or specialist training.

1 investor

Forward packages borrower financials and loan requests into structured, lender-ready credit opportunities, presenting deal terms such as facility size, tenor, pricing, and covenants. It serves lenders and borrowers involved in debt financing and commercial lending.

1 investor

GodHands provides infrastructure that allows AI agents to interact reliably with web browsers and desktop applications, including legacy systems that lack APIs, by combining deterministic execution with visual recognition rather than relying solely on vision-based methods.

1 investor

Hemlock builds a wearable device, the Bracelet, that captures force-labeled human manipulation demonstrations from everyday work to create training datasets for robotics foundation models and embodied AI.

1 investor

Herdr is a background server runtime that keeps AI coding agents' terminal sessions alive across disconnects, closed lids, and restarts, letting developers reattach from any device. It works with existing agent CLIs such as Claude Code, Codex, Cursor, opencode, and Grok, running as a single binary on macOS, Linux, and Windows.

1 investor

Lambda Robotics develops autonomous robots for data centers and facilities that support AI compute operations. The robots are deployed into physical environments and improve through repeated deployments.

1 investor

Lantern offers an AI hiring manager that learns a company's definition of an exceptional hire, tests roles against the talent market, and then sources, interviews, assesses, and schedules candidates. It combines calibration, talent intelligence, candidate outreach, AI interviews, technical assessments, and scheduling in one system so teams do not need a separate ATS or sourcing tool.

1 investor

Lightfield is an AI tool for in-house legal teams that handles legal work automatically and integrates with email, messaging, CRM, and workflow systems. It connects to platforms such as Gmail, Outlook, Microsoft 365, Teams, Slack, Salesforce, Jira, ServiceNow, Ironclad, Zendesk, and HubSpot.

1 investor

A research lab building AI models trained to decode physical-world signals from instruments and to operate those instruments, using real-world measurement as the training signal rather than text corpora. It positions itself in machine learning and deeptech applied to physical sensing.

1 investor

Quippy is an app that provides a personalized, adaptive program for practicing social interactions through voice or text role-play with live feedback and targeted drills. Aimed at people looking to improve their conversational skills and social life, it delivers a structured 12-week curriculum built around each user's specific weaknesses.

1 investor

Redoubt is a Utah-based independent commercial insurance agency serving small businesses nationwide, with a focus on contractors, service providers, and trucking companies. It helps clients compare carrier and wholesaler options and handles coverage such as general liability, commercial auto, workers compensation, cargo, and DOT filings.

1 investor

RunInfra benchmarks machine learning models and serving engines across different GPUs, provides real performance measurements (latency, throughput, cost), and delivers a deployment-ready kit that runs on the user's choice of cloud infrastructure. The platform serves machine learning engineers and teams building inference workloads who need transparent, portable model deployment options.

1 investor

Sentient is a free, open-source macOS application that runs an on-device LLM to build a personal knowledge base from a user's files and proactively completes tasks through computer use. It stores data locally in plain markdown, uses a small on-device model plus the user's own frontier model (ChatGPT, Claude, OpenRouter, or LM Studio), and is optimized for Apple silicon.

1 investor

Simantic develops hardware simulation software that enables engineers and AI systems to test and debug embedded firmware without physical hardware constraints.

1 investor

Simulithic runs AI agent simulations that model real user cohorts—built from a product's last 90 days of session data—to predict how experiments and product variants will perform before shipping to real users. It integrates with session tools like Clarity and PostHog and returns predicted metrics such as lift, confidence intervals, churn, and activation for product and growth teams.

1 investor

Talos builds non-invasive, magnet-mounted sensors that continuously monitor critical power equipment such as large transformers, detecting vibration, magnetic/EMF, temperature, and humidity anomalies to flag potential faults early. It identifies where a problem occurs on a 3D view of the machine and gives maintenance teams alerts explaining what changed and what steps to take before mechanical failures occur.

1 investor

Veeza is an AI-powered visa application assistant that fills out government visa forms, verifies documents, and books embassy or visa-centre appointments, with a human expert reviewing each application before submission. It serves travelers applying for Schengen, UK, and US visas, with an initial focus on applicants from Egypt and the Global South.

1 investor

Vorelios develops foundation models that learn physics to run engineering simulations in seconds at lower cost than traditional methods. The company serves engineering and product development teams that rely on physical simulation.

1 investor