Theory Ventures is an early-stage venture capital firm based in SF. We invest $1-25m in software companies that leverage technology discontinuities.

Your AI agent is about to capsize your compute budget, but @sailresearchco saw it coming ⛵
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Last call to join this Thursday’s office hours at 9am PT / 12pm ET! Join @ttunguz and Sunil Agrawal, CISO at @glean and former security leader at Bolt, Nutanix, Netflix, Adobe, and more. Frontier models are in attackers’ hands. We’ll be unpacking how the playbook changes as we shift from human adversaries to ones that operate at machine-speed. Register: gatsby.events/theory-venture…
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Security always comes second, and attackers know it. Our Head of AI @BEBischof sits down with @HarryWetherald, co-founder and CEO of @Maze_Security, for an In-Practice episode on the AI-driven arms race with attackers and what else teams can do since guardrails can't separate good hacking from bad. Watch: piped.video/watch?v=MXnLdZ9U…
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Theory Ventures retweeted
And that's a wrap on World's Fair in SF 🎉 Thanks to everyone who stopped by the booth to say hi and dive into LanceDB internals. Some of the best conversations happen at a conference booth and this year was no exception. It was great meeting everyone who came out to SPIN SF with @theoryvc & @ollama and to our USA World Cup watch party with @ExaAILabs, @ExtendHQ, & @fastinoAI last week. Both were packed, both were a good time, and we'd absolutely do them again. See you at the next one 👋
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Trillion is the new billion. But what does it take to manage such large & multimodal datasets for AI? @lancedb Co-founder and CTO Lei Xu unpacks new data infrastructure challenges, from storing large blobs, to trillion-size tables, and dealing with distributed pipelines. Watch his full talk from @AICouncilConf: piped.video/watch?is=myQOJqL…
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Agentic payments are already underway, but who owns the trusted financial data layer behind them? @alliumlabs is building this future, and if you want to be a part of it, they're hiring:
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Our AI Engineer, Melanie, was happy to deliver a Codex reset today at @aiDotEngineer World's Fair. Thanks to @dkundel and @thsottiaux and ofc @OpenAIDevs
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Theory Ventures retweeted
🖲️ We love our community! To celebrate getting together with many of you we brought @thsottiaux's reset button to AIE World's Fair. Congrats Melanie for pushing the button 🎉 All Codex Go/Plus/Pro subscribers around the world are receiving a reset in the bank! Happy Codexing!
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Never miss a Theory side event.
Last night's event at SPIN was a blast! Thank you to everyone who came & played in our ping pong tournament 🏓 Thank you to @Theoryvc & @ollama for co-hosting with us 🙌
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How better to spend an evening after a great conference, than a slow boat out to sea! We had a great time at @AICouncilConf and our accompanying event Ship It, co-hosted with @lancedb and @motherduck. Our Head of AI @BEBischof led a talk track on inference systems plus moderated "Modern Inference for Modern Workloads" -- with @zedlewski of @togethercompute; Tuomas Rintamäki from @nvidia's OSS LLMs, and @charles_irl of @modal -- unpacking why a dedicated inference provider is necessary when OpenAI already exists. Dig into all of our learnings: theoryvc.com/blog-posts/ai-c…
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Join @ttunguz and Sunil Agrawal, CISO at @glean & Emmy-award-winning technology innovator with 40+ security patents, next Thursday for a virtual Office Hours on battling AI adversaries. Sunil previously served as Bolt's Head of Security and held security leadership roles at Nutanix, Netflix, Adobe, and more. With frontier models in attackers' hands, phishing is flawless, exploit code writes itself, and deepfake calls are clearing wire transfers. 📅 Thursday, July 9th ⏰ 9 AM PDT / 12 PM EDT gatsby.events/theory-venture…
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As token costs keep climbing 📈, where else can we find efficiency gains? Partner @SpencerFarrar dug into how @sailresearchco is answering this question with more efficient inference and long-horizon agents. We're proud to back their Series A.
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Theory Ventures retweeted
2/3 Two side events if you want off the floor 🕺 Tuesday 6/30: LocalServe at SPIN SF with @TheoryVC and @Ollama. Ping pong tournament, drinks, and infra conversations. Register: luma.com/localserve
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If you care about where AI infrastructure is headed, clear your calendar for next Tuesday June 30, 6-9pm. Local Serve will bring builders together to compare notes on local and cloud AI (and get a few games of ping-pong in!), hosted by Theory Ventures, @ollama, and @LanceDB. 🏓 SPIN San Francisco 🎟️ Apply to register: luma.com/localserve?x=1
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The most important companies will soon run on agents that work for hours or days at a time. Today's inference stack, built for a human waiting on a chatbot, can't serve them. That's why we're excited to announce our investment in @sailresearchco, enabling inference as a schedulable workload, with up to 10x more tokens per dollar. Congrats to @neilmovva, @blintzbase, and the team on their Series A: theoryvc.com/blog-posts/buil…
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Theory Ventures retweeted
Samir Menon @blintzbase and I are thrilled to announce Sail @sailresearchco ! We build infrastructure for long-horizon agents: inference served at unbeatable prices-per-token for open models, plus sandboxes designed to run for days, weeks, or longer. We've raised $80M, w/ our seed led by @Sequoia and series A led by @KleinerPerkins. We're using this capital to build the most efficient infrastructure for long-horizon agents. What makes agents so different? Unlike a human waiting at a keyboard (top priority: speed), agents need scale, reliability, and sustainable cost. Sail finds this efficiency everywhere in the stack: we carefully choose our chips, write custom inference engines, and run a global controller that fully utilizes every computer in our fleet. Tight integration from silicon to API lets Sail open up the cost / latency frontier to our customers - the most patient agents can now access 10x more intelligence per dollar. We're excited to be working with great companies like @parallelweb, @detaildotdev,@Jackandjillai, and @quadrillion_ai to deploy long-horizon agents with trillions of tokens. Our team is thoughtful in our engineering craft and relentlessly ambitious in our pursuit of peak performance. We previously trained at companies like NVIDIA, OpenAI, Google, and so many trading firms. Now we're ready to do the work that will define our careers, in the most compute intensive market of all time. Welcome to the era of abundant intelligence. We can't wait to build with you!
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The Anthropic Mythos/Fable saga made one thing clear: AI agents are cyber experts at both offense and defense, and as they get smarter, the stakes get higher. The same models that can find and fix vulnerabilities can also be used to exploit them. So what does that mean for the future of cybersecurity? Partner Andy Triedman explores whether AI is offense- or defense-dominant, why attackers may win the near-term battle, and how defenders can still win the long-term war. Read: theoryvc.com/blog-posts/is-a…
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