YC Summer 2026 (S26) company

Agnost AI

We find where AI agents fail, then train better models to run them.

About Agnost AI

Agnost AI reads every conversation a company's AI Agent has with its users to find where it's silently failing and then turns that same data into custom models that run the agent better, faster & cheaper than frontier models.

Public traction evidence

Each signal links to the public source used for attribution.

  1. X

    Stop using your agent logs just for debugging.

    Stop using your agent logs just for debugging. Use them to train your own model. Today we're launching Agnost AI (YC S26)'s first model: agnost-*******-0.1 Trained for our first customer on their existing production traces & it beat the frontier: +22.9% task success −90.2%

  2. X

    system optimizations at scale is my favourite genre

    system optimizations at scale is my favourite genre

  3. X

    suddenly all yc s26 founders are superactive on linkedin iykyk

    suddenly all yc s26 founders are superactive on linkedin iykyk

  4. X

    AGNOST AI (YC S26) JUST LAUNCHED ON PRODUCT HUNT! AI agents don’t fail like traditional software.

    AGNOST AI (YC S26) JUST LAUNCHED ON PRODUCT HUNT! AI agents don’t fail like traditional software. They return 200. They pass evals. And they still quietly frustrate & churn users. Agnost AI finds those silent failures that evals miss & only show up in production conversations.

  5. LinkedIn

    Shubham Palriwala day-zero Agnost AI inside YC post

    Founder post says Agnost AI recently got accepted into YC and that Shubham Palriwala will document building Agnost AI inside YC through Demo Day.

  6. X

    Shubham Palriwala Agnost AI YC S26 announcement

    Founder post says Agnost AI got into Y Combinator and describes Agnost AI (YC S26) as infrastructure for self-improving AI agents, with early customers named in the post.

  7. X

    Introducing Agnost AI (YC S26): Product Analytics for AI Agents.

    Introducing Agnost AI (YC S26): Product Analytics for AI Agents. Analytics was never built for chat & voice. And that is the new interface. Your users' hidden feature requests, bugs & churn hide in conversations with your agent. Analyzing 1M+ daily. Yours are still unread.

  8. LinkedIn

    Agnost AI is joining Y Combinator

    Founder post says Agnost AI (YC S26) is joining Y Combinator and describes production AI analytics infrastructure.