Yc S26

Machine0 is a Y Combinator Summer 2026 startup that gives you persistent CPU and GPU virtual machines controlled entirely from the command line. Unlike ephemeral serverless sandboxes such as Modal or E2B, every Machine0 VM is a full machine you own—with root access, your own drivers and CUDA stack, a static public IP, an HTTPS endpoint, and per-minute billing that stops the moment you suspend it. What Is Machine0? Persistent CPU & GPU VMs for Agents Machine0 markets itself as an “agent-first cloud.” Instead of renting a server through a web console or juggling Terraform files, you provision, manage, and destroy virtual machines entirely through CLI commands, each of which supports a --json output flag for scripting and agent orchestration. The core pitch is that this is not a sandbox: it is a persistent virtual machine that an AI agent (or a human developer) actually owns. ...

EdotEnv (YC S26) is a startup founded by former quants Rui and Michael that builds self-improving reinforcement learning environments from quantitative trading workflows, designed specifically to evaluate and train LLM agents. Unlike static benchmarks that saturate as models improve, EdotEnv uses live market dynamics where alpha decays 30-50% per year, creating a continuously evolving difficulty curve that keeps evaluation meaningful even as frontier models advance. What Is EdotEnv and Why Does It Matter for LLM Research? EdotEnv launched on Hacker News in August 2026, receiving 39 points and 34 comments from the AI and quant finance communities. The company’s tagline — “Environments for intelligence that adapts” — captures its core thesis: the most useful benchmarks for evaluating LLM agents are those that get harder as the models get better. Traditional NLP benchmarks like MMLU, GSM8K, and HumanEval have all experienced significant saturation, with frontier models now scoring above 90% on many of them. EdotEnv proposes a radical alternative: use real financial markets as the evaluation environment, where the difficulty level is set by the collective intelligence of all market participants and naturally increases over time. ...