Mantis builds the infrastructure layer for living, predictive models of individual human beings — forecast to the horizon where a decision still has to be made. Starting with medicine.
Founders · Product
- Founded
- 2025
- Team
- 3 people
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214 businesses
BAML is one toolchain from the compiler to production. Build, test, trace, query, and alert on your code with tools that all read the same types.
Founders · Product
- Founded
- 2023
- Team
- 10 people
GPU orchestration, model inference, and an agent platform. Adopt Paladin, Ion, or Talos independently, or connect the full Cumulus stack.
Founders · Product
- Founded
- 2025
- Team
- 2 people
A detailed real-time model of your company. Designed with your security, privacy, and control in mind.
Product · How it works
- Founded
- 2024
- Team
- 8 people
Velvet is focused on building conversational models that are engaging.
Founders
- Founded
- 2025
- Team
- 3 people
Texel is a platform that enables developers to generate hardware-accelerated APIs for running AI pipelines 10 times faster, including image and video applications. For example, developers can use the latest NVIDIA GPUs or Google TPUs…
Founders · Product · How it works
- Founded
- 2023
- Team
- 2 people
Give your agents real VMs. Freestyle provides powerful Linux VMs for code you didn
Founders · Pricing · Product
- Founded
- 2024
- Team
- 5 people
Environments and data for the next generation of AI. Klavis AI builds RL environments and high-quality training data at scale across long-horizon coding, AI4Science, RSI, knowledge work, and agentic tool use.
Founders
- Founded
- 2025
- Team
- 3 people
Codag cuts coding-agent costs without changing how developers work. One command attaches it to Claude Code and Codex, and it teaches your agent to read large tool results efficiently.
Founders · Pricing · Product
- Founded
- 2026
- Team
- 1 people
Aviro designs challenging worlds for AI models to explore and solve problems, delivered as post-training datasets and reinforcement learning environments.
Product
- Founded
- 2024
- Team
- 2 people
Up to 60 vCPUs, 240 GB RAM & GPUs. Designed for agents using CLI or MCP. Billed by the minute.
Founders · Product
- Founded
- 2026
- Team
- 1 people
Osmosis is a post-training platform that helps companies fine-tune language models using reinforcement learning. We work with fast-growing AI companies to train task/domain-specific models that beat foundation models on performance…
Founders · Product · How it works
- Founded
- 2024
- Team
- 6 people
Human Archive (YC W26) is building the data and deployments infrastructure for physical AI. We design hardware, deploy cameras and sensors globally, and train models that help AI better understand how humans interact with the…
Founders · Product
- Founded
- 2026
- Team
- 100 people
Inkbox gives AI agents an identity, communication channels, and their own computer.
Founders · Pricing · Product · How it works
- Founded
- 2025
- Team
- 3 people
Piris Labs develops photonic components, optical interconnect systems, and execution software for AI infrastructure.
Founders · Product
- Founded
- 2025
- Team
- 8 people
CTGT is an applied AI research laboratory fundamentally solving the alignment and reliability bottleneck for enterprise AI. For enterprises, especially highly regulated industries, deploying Generative AI is historically a compromise…
Founders · Product · How it works
- Founded
- 2024
- Team
- 10 people
Butter is building bVisor, an incredibly lightweight sandbox runtime for AI agents.
Founders · Product
- Founded
- 2024
- Team
- 2 people
Brainbase lets teams get to extremely powerful agents extremely fast across any model or harness by handling agent hosting, scaling, evaluations and more.
Founders · Pricing
- Founded
- 2024
- Team
- 4 people
Cuebench builds RL environments for scientific discovery and inference.
- Founded
- 2026
- Team
- 3 people
Turn your ideas into products without coding, all on one platform.
Founders · Pricing · Product · How it works
- Founded
- 2025
- Team
- 4 people
Agents that curate your data, post-train open-weight models, evaluate and serve them. You own the weights.
Product
- Founded
- 2025
- Team
- 2 people
Cut OpenAI, Anthropic, and Gemini API costs with accuracy held flat — or take a smaller cut and lift accuracy by several points instead. The bear-2 prompt compression API strips low-signal tokens from your inputs before they hit the…
Product
- Founded
- 2025
- Team
- 2 people