Mesmer
Mesmer is the operating system for agentic engineering teams. A few engineering teams are accelerating at breakneck speed, while most are stuck with incremental gains. Mesmer exists so that gap doesn't come down to who gets lucky with their AI experiments. We help founders and CTOs turn agents into real leverage across their organization: faster delivery, better quality, less bureaucracy, and a clear view of where the bottlenecks are and what to do next. Hundreds of engineering teams have used M
Y Combinator
yc-company-directory #277Mesmer is the operating system for agentic engineering teams. A few engineering teams are accelerating at breakneck speed, while most are stuck with incremental gains. Mesmer exists so that gap doesn't come down to who gets lucky with their AI experiments. We help founders and CTOs turn agents into real leverage across their organization: faster delivery, better quality, less bureaucracy, and a clear view of where the bottlenecks are and what to do next. Hundreds of engineering teams have used M
sourceMesmer is classified as AI agents from source descriptions and fund-directory context. Similar companies below are ranked from offline product facets and meaningful description overlap; category and source affiliation can only strengthen an existing product match. For lookup-created rows, the profile starts as pending enrichment until deeper source collection runs.
Local clusters rerank extracted product concepts and description terms. The generated graph remains the fallback for sparse descriptions: offline reciprocal product-similarity graph: extracted concepts + description terms + bounded category/affiliation boosts. Minimum fallback score: 0; max competitors: 6.
Companies similar to Mesmer
A deterministic local cluster built from offline product facets and meaningful description terms. Category and selected-institution affiliation provide bounded tie-breaks. Open any peer to continue exploring its cluster.
Scalar Field
match 96We’re building the agentic trading desk for the new operating system of markets. I used to be a trader at Tower Research and Goldman Sachs, and I’m building Scalar Field with my co-founder Ramakant, who led engineering teams at Microsoft. We’ve both spent our careers at the intersection of finance and technology, and we’re using that experience to rethink how markets are analyzed, tested, and traded in the age of agents. Scalar Field is built around a simple belief: over the next few years, agen
shared extracted concept terms: operat, system; shared product terms: operat, system, agentic, engineer; same category: AI agents; shared affiliation: Y Combinator
Maitai
match 65Maitai makes building reliable AI applications easy. We autocorrect faulty model output in real-time and automatically fine-tune models that learn from their mistakes. This means our customers get more reliable results immediately, and over time, they gain custom models built specifically for their application that only get better and faster. You wouldn’t hire an employee who doesn’t learn from their mistakes—so why use a model that doesn’t? Maitai is here to deliver the next generation of relia
shared product terms: real, gain, better, faster; shared affiliation: Y Combinator
Veria Labs
match 64Veria Labs is developing AI agents that hack better than the best human hackers. Founded by members of the #1 US competitive hacking team, we've already found critical bugs in AI tools, operating systems, fintech and billion dollar crypto exchanges. Now we're scaling that expertise through AI-native security tooling that operates faster than human researchers while finding deeper, more complex vulnerabilities that traditional tools miss.
shared extracted concept terms: operat, system; shared product terms: operat, system, while, faster; same category: AI agents; shared affiliation: Y Combinator
VoiceOS
match 61VoiceOS turns voice into a seamless, universal interface to 10x productivity — a true voice operating system for the next era of computing. It works across any app, letting users speak naturally to dictate, edit, and write text instantly. Whether writing an email, revising a document, or grasping complex information, VoiceOS transforms voice into the most powerful productivity tool, bridging the gap between thought and expression.
shared extracted concept terms: operat, system; shared product terms: operat, system, most, gap; shared affiliation: Y Combinator
Pre
match 59Pre is an AI-powered execution system for startup founders who are serious about building real companies. Set a 10-week goal, connect your tools, and get pushed to do your highest-impact work every week. Pre doesn’t track effort… it tracks outcomes, and it holds you to a higher standard.
shared extracted concept terms: system; shared product terms: system, doesn, who, founder; shared affiliation: Y Combinator
OSIMple
match 57OSIMple automates data entry for inspectors by replacing stacks of paper with tablets and by generating completed inspection forms. This saves inspectors almost half of their inspection time. Founder Amanda Chan and Michael Miller came across the idea while talking to friends and professors in the civil engineering department at their university. They started building better software for bridge inspectors who were using very manual processes, and it’s been used on over 400 bridges so far. They’v
shared product terms: engineer, while, so, who; shared affiliation: Y Combinator