EdotEnv, a Y Combinator Summer 2026 company founded by Jay Azhang and Matthew Siper, is taking sign-ups for reinforcement learning environments built from financial-market data, aimed at training agen…
Lamb Labs, a Y Combinator-backed startup founded by Niki Kotecha and Thomas Lanning, announced on August 4th that its planned custom inference chips could generate more than 20,000 tokens per second a…
HappyRobot closed a $150 million Series C at a $1.2 billion post-money valuation, led by Prysm Capital and co-led by Eurazeo, making it FreightTech's newest unicorn. The company has raised roughly $20…
Stripe CEO Patrick Collison, who dropped out of MIT twice to build the now-$159 billion payments company, told Gen Z at Y Combinator's Startup School that his urgency to leave college was 'a poor intu…
A Hacker News user, cyanregiment, asks whether 'agentic' programming is a flop, questioning if it is an insane way to get value out of a large language model or a total misunderstanding of the technol…
Waymo co-CEO Dmitri Dolgov said at a Y Combinator talk released Monday that Silicon Valley's 'move fast and break things' mantra is unacceptable for physical AI, where mistakes can cost human lives, a…
Y Combinator has open-sourced QM (quartermaster), a multiplayer agent harness for work that runs in Slack and on the web, under the MIT license. The harness, used internally by YC across accounting, l…
Hoplite, a Y Combinator-backed startup, launched cloud coding agents that port a developer's local setup—including sessions, memories, and MCP servers—into the cloud, using a custom harness independen…
Exa CEO Will Bryk said on August 3rd that Exa's index now serves 80 billion pages and tracks 1.4 trillion URLs, nearly triple the 500 billion URLs reported in May, with expectations to reach "Google-s…
Buildbox, a two-person San Francisco startup in Y Combinator's Summer 2026 batch, launched on August 3rd an analytics layer that detects AI agent failures invisible in standard evaluations and traces,…
Intelligence, the San Francisco-based maker of DesignArena, raised a $7.9 million seed round led by Index Ventures, according to co-founder and CEO Grace Li. The startup, which uses human rankings fro…
Design Arena, a Y Combinator-backed startup founded in 2025 by Grace Li, raised $8 million to expand its platform where over 5 million users in 140-plus countries rank AI-generated visuals, providing …
NVIDIA CEO Jensen Huang told 6,000 founders at Y Combinator's Startup School that the company's founding algorithm was exactly wrong, yet NVIDIA grew into a $5 trillion company. Huang recounted how a …
Armature, founded by Theodore Otzenberger and Louis Scremin, launched on July 22 to provide product analytics for AI agent sessions, reconstructing Model Context Protocol (MCP) sessions to show softwa…
Markov, a computer-use data startup founded by Dev Mandal and Harish Ashok, released CAD Environments on August 3rd, a dataset of 51 human-performed CAD workflows totaling 99.03 hours and 152 GB for t…
A developer using the handle silisleek posted on Hacker News a Show HN submission for a network where an AI agent can create posts, comment, and moderate, with users able to talk to it in-thread. The …
Boris Cherny, creator of Claude Code at Anthropic, revealed at Y Combinator's Startup School that he set Claude, running in Slack and wired to a macOS runner on GitHub, to rewrite Anthropic's Electron…
Retell AI, a Y Combinator-backed voice AI company valued at over $1.5B with $80M in annual recurring revenue, is hiring an Applied AI Engineer (Customer Facing) for its Redwood City headquarters, offe…
Boris Cherny, head of Claude Code at Anthropic, revealed at Y Combinator's Startup School 2026 that he set Claude Tag, a new product running Claude in Slack, to rewrite the Claude desktop app from Ele…
Y Combinator's open-source QM agent runtime, version 0.1.4, has drawn 6,600 GitHub stars, 700 forks, 68 pull requests, and 14 open issues within two days of publication, according to a code review by …