River AI is a Palo Alto–based AI startup founded by former xAI co-founder Igor Babuschkin, building a full-stack platform for custom, open-weight mode…
Intelligence is a San Francisco product lab building large-scale evaluation platforms for frontier AI models, best known for Design Arena — a crowdsou…
Fish Audio develops multilingual AI voice generation and voice cloning infrastructure for creators and developers, with text-to-speech APIs and audio …
SkyPilot is an AI compute platform that commercializes the popular open-source SkyPilot project developed at UC Berkeley's Sky Computing Lab. It acts …
Infinity is an AI infrastructure company building a universal inference software layer — a CUDA alternative — that makes any AI chip (GPUs, SRAM, mobi…
MicroAGI is a Berlin-based data research lab accelerating embodied AI by recording real-world human task execution through camera-wearing workers, gen…
Runta builds the execution layer for AI agents: isolated, stateful microVM runtimes that let long-running agents run, be governed, and be recorded. Th…
Gradium is a Paris-based AI company building ultra-low latency voice foundation models that enable near-instant, expressive, and multilingual voice AI…
Mirendil is a San Francisco frontier AI research lab building 'AI that builds AI' — training frontier models that are expert at AI R&D and wrapping th…
Aether AI is a frontier AI research company building causal world models — systems that reason through causal mechanisms rather than statistical corre…
Taste Labs is building the data and infrastructure layer that gives AI models and agents "taste" — the ability to judge subjective quality rather than…
ZeroDrift is an AI compliance firewall that enforces regulatory and company-policy rules on AI-generated messages before delivery, blocking, rewriting…
Inherent is a London-based frontier AI lab building Faraday, an AI system for open-ended scientific discovery where humans and self-improving AI colla…
Semantic KV caching layer built for LLM inference, enabling AI applications to reduce inference costs and latency by reusing cached computation across…
NanoClaw is a security-focused, open-source personal AI agent that runs each agent in an isolated Docker/Linux container on Anthropic's Claude Agent S…
Graphon AI is a pre-model intelligence layer that transforms enterprise multimodal data (documents, video, audio, logs, databases) into persistent rel…
Nace AI builds MetaModel, an AI system that dynamically generates small, task-specific language models for enterprises using a Hypernet architecture t…
Ineffable Intelligence is a London-based AI research lab founded in late 2025 by David Silver, former reinforcement learning lead at Google DeepMind a…
AI research lab building self-learning expert agents that continuously adapt and develop domain expertise through experience rather than static traini…
Sycamore is a Palo Alto AI infrastructure startup building a trusted agent operating system that enables enterprises to deploy, govern, and orchestrat…
Respan (formerly Keywords AI, YC W24) is an AI observability and LLM engineering platform that lets teams trace, evaluate, and improve AI agents. It c…
AMI Labs is a frontier AI research lab building world-model-based intelligence systems with planning, memory, and safety controls for real-world appli…
Layercode provides voice AI infrastructure for developers, enabling production-ready, low-latency voice AI agents using TypeScript. The platform handl…
AI research company building adaptive models that learn continuously without expensive retraining, using less computing power than leading AI models, …
Langbase is a serverless AI developer platform for building, deploying, and scaling AI agents. It processes 700TB+ of vector memory and billions of AI…
poetiq is an AI research and engineering company building reasoning systems and self-improving intelligence infrastructure, founded by former Google D…
Bolna is a voice AI platform that lets businesses design, deploy, and manage AI phone agents for outbound and inbound calls across sales, collections,…
Lemon Slice is a research and product lab building real-time interactive AI avatars, using its own video-diffusion models to turn any single image int…
Neuromorphic computing startup building brain-inspired analog hardware to achieve biology-scale energy efficiency for AI workloads, founded by former …
Luminal builds a compiler and runtime for AI inference that treats compilation as a search (superoptimization) problem, automatically compiling models…
Inception (Inception Labs) is a Palo Alto-based AI research company building diffusion large language models (dLLMs) that generate text and code in pa…
Inference provides a distributed, serverless platform that lets developers run open-source AI models without managing infrastructure. The company aggr…
Dedalus Labs builds infrastructure for agentic AI, with products and APIs for deploying multimodal, multi-tool agents and experimenting with autonomou…
Reinforcement fine-tuning platform (YC W25) that helps companies build task-specific AI models that outperform foundation models at a fraction of the …
Universal memory API and context engineering platform for AI applications. Provides long-term and short-term memory infrastructure for AI agents, powe…
Paid is a monetization platform for AI-native companies, enabling results-based billing for AI agents. Founded by Outreach co-founder Manny Medina, it…
Artificial Societies builds large-scale AI simulations of human societies to help organizations predict how real-world audiences think, feel, and resp…
Tilde Research is an AI infrastructure company building efficient mixture-of-experts (MoE) training and inference systems. It develops novel architect…
Radical AI is building next-generation AI infrastructure with a focus on custom silicon and compute systems optimized for large-scale model training a…
AI research lab founded by former OpenAI CTO Mira Murati, building Tinker, an API for distributed LLM fine-tuning that makes model customization acces…
LGND is building 'ChatGPT for the Earth,' a geospatial AI infrastructure platform that makes the world's satellite and geographic data as accessible a…
ZeroEntropy provides a high-accuracy search API over unstructured data for AI agents and RAG applications. The YC-backed company builds smarter retrie…
Veris AI is a simulation-first training and certification platform for enterprise AI agents. Their platform provides high-fidelity sandbox environment…
Mail0 (also known as Zero) is an open-source, AI-native email client that uses artificial intelligence to prioritize emails, summarize threads, draft …
Fastino builds task-specific language models and small-model infrastructure for production AI workloads, focused on speed, accuracy, and agentic AI us…
Augrade is an AI-powered spatial computing platform that automates heavy industry design and engineering, generating manufacturing and construction-gr…
ORO is a human intelligence protocol that enables individuals to contribute private data to AI model training while preserving privacy through zkTLS a…
Lazarus AI (Lazarus Enterprises, Inc.) is a Boston/Cambridge, MA-based enterprise AI company focused on document understanding and intelligent data pr…
Browser Use is an open-source framework that enables AI agents to autonomously navigate and interact with websites like a human user. Built by ETH Zur…
Zo Computer is building a new category of personal computing — an intelligent cloud computer powered by AI. The platform enables users to build powerf…
/dev/agents is building a next-generation operating system purpose-built for AI agents, founded by former Google and Android executives who believe a …
Wordware is a web-hosted IDE for building AI agents, enabling non-technical domain experts and engineers to collaboratively create, iterate, and deplo…
Adaline provides an LLMOps platform for product and engineering teams to iterate, evaluate, deploy, and monitor prompts and AI applications, helping t…
Anara (formerly Unriddle) is an AI-powered research assistant that helps scientists and academics rapidly find insights across research papers, enabli…
Third Dimension AI is a 3D generative AI platform that creates high-fidelity, rendering engine-ready environments from text prompts and images. The pl…
Letta builds a platform and open source framework for stateful AI agents with memory, helping developers deploy autonomous agents that operate over lo…
AI voice platform enabling businesses to build and deploy AI-powered voice agents for phone operations, contact centers, and customer service. API-dri…
Decentralized open-source AGI platform backed by Founders Fund and Pantera Capital, building an open AGI network where multiple AI agents collaborate …
bem provides a production layer for unstructured data, turning documents, audio, images, and other messy inputs into deterministic, schema-enforced ou…
H Company is a frontier AI company building autonomous agents and foundation-model systems for enterprise work. The company develops research, model, …
EZKL builds zero-knowledge machine learning (zkML) infrastructure for verifying AI model inference. Its open-source tooling compiles PyTorch, TensorFl…
Workload as a Service platform delivering intelligent orchestration for AI workloads, eliminating inefficiencies by dynamically placing workloads on o…
Guardrails AI builds safety, validation, and monitoring infrastructure for large language model applications. Its open-source and enterprise platform …
Credal provides a secure AI agent platform for enterprises, enabling teams to build AI agents and MCP-connected workflows across internal data sources…
Community platform for fine-tuning and sharing open-source AI models like Stable Diffusion, enabling users to customize models and access a marketplac…
Boson AI builds proprietary multimodal foundation models for voice and audio (Higgs) and Feynman Flow, an agentic platform that turns model capability…