Brandon Gleklen

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Brandon Gleklen

Brandon Gleklen

@BrandonGleklen

@BatteryVentures views are my own, no investment advice intended.

NYC Katılım Ekim 2013
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Brandon Gleklen
Brandon Gleklen@BrandonGleklen·
1) Thrilled to announce @BatteryVentures is leading the $40M Series B for @LetterAICo (just 4 months after the A!) + to join the board. Sales enablement teams have been held back by the quality of their tools, and Letter is changing that. Here's why 🧵
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nihal
nihal@nihalmehta·
New York is about to make a massive mistake. The NY State Senate is advancing a proposal to decouple from federal QSBS (Section 1202) — the tax provision that lets startup founders exclude gains on qualifying exits. If this passes, founders would owe 10-13% in combined state and city tax on exits that are tax-free at the federal level and in nearly every other major tech state. Even worse: it's retroactive to January 1, 2025. This comes right as the federal government just expanded QSBS benefits and New Jersey moved to full conformity. New York wants to go in the opposite direction. As a seed investor in NYC who has backed hundreds of companies, I can tell you: founders are mobile. If New York becomes one of the most punitive states for startup exits, the best founders will simply build somewhere else — and the jobs, tax revenue, and innovation will follow. NYC has built something special over the last two decades. This proposal puts it all at risk for a short-sighted revenue grab. If you're a founder, investor, or anyone who cares about the NYC tech ecosystem — please sign the TechNYC open letter before Monday below 👇🏾👇🏾👇🏾 Keep building, NYC 🗽
nihal tweet media
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Brandon Gleklen
Brandon Gleklen@BrandonGleklen·
“It's happened already in finance: high frequency trading. Now it's happening in tech: high frequency software. Then we will have high frequency science, high frequency governance, high frequency engineering, high frequency medicine and high frequency law.”
🎭@deepfates

You might think the "agents" thing is just coming for software engineers. Yeah, agents write code, code and code sells a bunch of tokens, But most people's work isn't code, it's memos or decks or whatever. Why this is false: Agents can do anything you can do on a computer, and they do it by spending output tokens to write code. The number of keypresses used by a consultant to do a task is not a good measurement of the number of tokens an agent would use. For example: one "deep research" report might be 20 pages of output tokens. But it also might have required more than 20 pages of output tokens to do all the searches, fetches, PDF parsing and interim summaries that you never even see as the user. It also had to input all the tokens of every document it read in searching — likely more than 20 pages, since the point of the report is to collect and summarize this information. So now we're at 3x tokens for the final output. That one report is so cheap, and so fast, then now you can do more research than ever. This is valuable! If your business relies on having good information about the world, you can probably find a way to make more money by doing 3 deep research reports and then synthesizing them. More tokens! Now you've kicked off three deep research reports you deserve a little treat, right? So you fire up your browser agent and tell it go find me some nice linen shirts for summer in my size. Open them in tabs so I can look through. Well your browser agent has to interact with the browser using some kind of tool and you know what that tool is? Code, baby. Tokens. And the tokens are so cheap. You got to understand. We're spending a lot in the aggregate, but in the moment it is "spend a nickel to for 10 minutes of being literally Superman". Like yes I'll just keep spending nickels actually. I will never stop being Superman at that price. All knowledge workers will feel this. A lot of you already do, you're just hiding it from your boss so you can have more free time while "working from home". And maybe it's better to protect yourselves from Jevons as long as possible, because once you get the bug it's hard to stop. You realize that you could be creating all of the businesses and projects and art you ever wanted and all you've got to do is put your instructions in the right order and put the nickels in the bag. I would happily bet against Anthropic's revenue spike being a brief "sugar high". So would most capital allocators! That is because they have already seen that software can eat the world. White collar knowledge work fundamentally changes in the face of agent economics and entirely new forms of knowledge production? It's happened already in finance: high frequency trading. Now it's happening in tech: high frequency software. Then we will have high frequency science, high frequency governance, high frequency engineering, high frequency medicine and high frequency law. Human society is about to be absolutely DDOSed by information at all levels of the stack. Our civilization was never meant to handle this many tokens. If anything can be done on a computer it will be turned into tokens instead of human actions and it will happen faster and in parallel. This stuff works, it is real, it is getting better. It is going to hit economically and socially this year and nobody is ready and I think it is important to start taking it seriously, instead of finding ever more arbitrary reasons to remain in denial.

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Brandon Gleklen
Brandon Gleklen@BrandonGleklen·
"This is incredible evidence of what AI agents with the right harness can do and I expect it to only get better from now." The sentence above will a common one across domains in the coming months. Awesome work @Tenzai_Labs
𝙿𝚊𝚟𝚎𝚕 𝙶𝚞𝚛𝚟𝚒𝚌𝚑@PashaGur

We evaluated @Tenzai_Labs AI hacker across six major CTF competitions designed for humans. Result: Top 1% performance, outperforming 125,000+ human hackers across different domains - web hacking, ai hacking, low level system hacking. We wanted to see what @Tenzai_Labs's hacking agent is really capable of in the most complicated and competitive environments, where to excel, one needs to solve increasingly difficult challenges. The results we achieved surprised even me. This is incredible evidence of what AI agents with the right harness can do and I expect it to only get better from now. blog.tenzai.com/tenzais-ai-hac…

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𝙿𝚊𝚟𝚎𝚕 𝙶𝚞𝚛𝚟𝚒𝚌𝚑
We evaluated @Tenzai_Labs AI hacker across six major CTF competitions designed for humans. Result: Top 1% performance, outperforming 125,000+ human hackers across different domains - web hacking, ai hacking, low level system hacking. We wanted to see what @Tenzai_Labs's hacking agent is really capable of in the most complicated and competitive environments, where to excel, one needs to solve increasingly difficult challenges. The results we achieved surprised even me. This is incredible evidence of what AI agents with the right harness can do and I expect it to only get better from now. blog.tenzai.com/tenzais-ai-hac…
𝙿𝚊𝚟𝚎𝚕 𝙶𝚞𝚛𝚟𝚒𝚌𝚑 tweet media
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Brandon Gleklen
Brandon Gleklen@BrandonGleklen·
Every agentic system has three key parts: - the LLM (which is swappable) - the "circle" (the environment / what tools the entity has, what constraints it operates under, how its output gets evaluated) - the "loom" (the accumulated record of every action and outcome across runs) When an enterprise IT team vibe-codes a replacement for a SaaS co, they're assembling the same three components. The LLM is the same one the startup uses. What they can't easily replicate is the "circle" design (the hard-won knowledge of what tools the system needs, what edge cases exist, what "correct" actually means in a given domain) and the "loom" (accumulated production data about what worked, what failed, and why)
🎭@deepfates

Today I announce Cantrip: On summoning entities from language in circles. In this book I unify the paradigm behind base models, chatbots, coding agents, RLMs, and RL agents, through the metaphor of magic. Code is provided. deepfates.com/cantrip

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Brandon Gleklen
Brandon Gleklen@BrandonGleklen·
Used @amazon’s Rufus AI to take a picture of an item / ask it to reorder and it worked perfectly. Not rocket science obviously, but it was delightful - can see this being a main flow for me in the Amazon app.
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Brandon Gleklen retweetledi
Endowment Eddie
Endowment Eddie@endowment_eddie·
Even in Q4’21, Public SaaS quarterly net new ARR peaked at $2.6 billion. Anthropic has added nearly $11B in early 2026 ($9 to $20B RR).
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Brandon Gleklen retweetledi
Kurt Schrader
Kurt Schrader@kurt·
Amazon had two-pizza teams but we’re quickly moving into two-pizza-slice teams territory. I’ve explained this to probably 20 CEOs and engineering leaders in the last month and most of them aren’t even thinking about it yet.
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Brandon Gleklen
Brandon Gleklen@BrandonGleklen·
1) Thrilled to announce @BatteryVentures is leading the $40M Series B for @LetterAICo (just 4 months after the A!) + to join the board. Sales enablement teams have been held back by the quality of their tools, and Letter is changing that. Here's why 🧵
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Brandon Gleklen
Brandon Gleklen@BrandonGleklen·
5) The results speak for themselves. Customers are replacing their legacy CMS, LMS, roleplay tools, and RFP software with one platform, and seeing reps ramp up faster and sell more deals. And we heard that reps "would riot" if it was taken away.
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