Managing Partner and co-founder at Threshold Ventures, a venture capital firm based in Silicon Valley. Threshold tweets at @thresholdvc

Palo Alto, CA
Josh Stein retweeted
Spellbook is Canada’s third fastest growing company! Incredibly proud of our team. The @globeandmail reviewed financial data from hundreds of companies across the country: theglobeandmail.com/business…
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A well deserved recognition!
Proud to be recognized in Canada's Top 40 under 40 as part of the Spellbook team, alongside a number of others pushing the country to be more ambitious and prosperous 🇨🇦 Great to see AI legends @aidangomez, @nickfrosst and @1vnzh also included. financialpost.com/news/meet-…
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Congrats @jeff on the launch of @closclavier wine! Jeff knows his stuff with 🍷 and much like in VC, anything that merits his attention is something I know is worth taking a good look at! Beyond excited to get my first allocation in the mail today! 😊
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Josh Stein retweeted
Replying to @lisamxu @sequen_ai
Totally agree with this
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I was very sad to learn that Bill Draper passed away this week. I had the privilege of knowing Bill for almost 30 years. In 1999, when I was getting my startup off the ground, I pitched Bill and asked if he would invest $250,000. Bill said, “No... but if you let me invest $500,000, we have a deal.” He then called his son @TimDraper and got me a meeting at @DFJvc, who ended up leading out Series A. Years later, after we sold the company, Tim gave me the opportunity to join DFJ as an investor. I will always be grateful to Bill (and Tim) for taking that chance on me. That was who Bill was: a believer in people and ideas, and someone who found joy in opening doors for others. Bill was one of the true pioneers of the venture capital industry and there are countless founders and investors whose lives and careers he helped shape. He and his wife Phyllis raised a wonderful and close-knit family. In his later years, he devoted much of his energy to philanthropy and the @DRKFoundation applying the same belief in entrepreneurs and ideas to provide seed funding to more than 250 new non-profits. Bill was one of the most sincere, kind, optimistic and honorable people I have known. I will always remember him as a role model for what a life well lived can look like. I will miss Bill deeply and will always be grateful to have known him, and for the extraordinary impact he had on my life and on so many others. May his memory be a blessing.
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Josh Stein retweeted
Business Insider published our internal memo on AI writing at @SpellbookLegal I love AI but it's bad at unstructured writing. It takes too many words to say too little. We prefer "D+ writing" to long, over-polished AI docs: businessinsider.com/spellboo…
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Word was built for one human editing one document at a time. @SpellbookLegal is built for lawyers and AI working across entire transactions. This is where the product stops looking like a Word add-in and starts looking like the infrastructure for agreements.
Cursor for contracts is here. Announcing Spellbook's new AI document editor. Doc editing for lawyers is disjointed: you can edit with AI in chat, but then need to "Open in Word" to make manual tweaks without breaking formatting. Alternatively you can use a Word add-in like Spellbook's, but this only allows you to work on one document at a time. For a long time, @mitchellhynes and I talked about getting to a real "Cursor for Contracts" experience. With a lot of blood and sweat, we're finally there. Spellbook's new editor combines the best of AI editing and manual editing in one place—while fully supporting rich Word formatting that lawyers rely on. Ask AI to make edits across an entire document set, then review, accept and tweak all in one window. This sounds like a small thing, but the reduction in friction has totally changed my document editing workflow.
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Josh Stein retweeted
Terafab will be 50 times the size of the Pentagon when complete
Terafab approximate size comparison between Giga Texas, the Pentagon, Apple Park, and the Mall of America. There has never been a building this large. Elon Musk says it will be the most valuable building by far.
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Josh Stein retweeted
We are growing so fast at Spellbook that we need a new person to lead Growth Analytics! $5k USD if you refer someone great that we hire. They should be passionate about growth, data and getting to the top of the mountain. spellbook.com/careers?ashby_…
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Josh Stein retweeted
We're proud to share that @FiveGuys has chosen @SpellbookLegal to accelerate their contract flow. GC Adam Aberra and the Five Guys legal team are running the forward-thinking legal infrastructure behind a global franchise network that spans 1,900+ restaurants across 29 countries. We’re honored to be supporting them as they scale and sharpen their work with Spellbook. This was a delicious announcement to make :)
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Josh Stein retweeted
Will it soon be legal malpractice *not* to use AI?
60% of contracts filed to the SEC contain mistakes. Spellbook Labs ran 60,000 pages of contracts from 500+ public companies through AI to answer a question: How often do human lawyers hallucinate? Accidents from self-driving cars get headlines—and they should. But human drivers have a higher accident rate. We wondered if something similar might play out in contract drafting. Reviewing 100 page contracts line-by-line is inhuman. Mistakes are inevitable. AI is very good at spotting issues like missing definitions and broken section references. There are risks to using AI in law. But we also need to ask: what is the risk of *not* using AI review as a second set of eyes? In the full report we show: 1. Top 10 public companies with the cleanest contracts 2. Error rates across industries (Media and Telecom were highest) 3. Error rates over time (we're not getting better!) 4. Error rates by contract type and length ... and a bunch more. Congrats @IBM for having the cleanest agreements. 📌 Read the report here: spellbook.com/labs
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This 👇
You do not understand growth unless CAC Payback runs in your veins It’s the most empirical first principle CAC:LTV seems like a first principle but it’s subjective BS It’s really surprising how few growth, data and finance people in tech have wired their brain for this metric
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Running my own little fleet of Claude agents — newsletter ingest, tweet drafts, code review on my PRs — has made one thing obvious: the prompt you shipped last week is often not the behavior running today. LaunchDarkly's AgentControl feels like the right shape of an answer. Excited to try it out!
I started LaunchDarkly because teams deserved better control over what they shipped. With AI, that matters more than ever. Today we’re launching AgentControl: real-time visibility and control for AI agents in production. ld.team/6W88xI
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Josh Stein retweeted
Today, we launched @Rippling Automated Compliance, starting with SOC 2. We have a unique advantage here: we aren't telling you how to fix your stack, because we ARE your stack. device management, identity and access management, HR, performance management...
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Thinking about the current pace of change got me thinking about the old days. I started in venture capital in April 2004. Top 10 companies, April 2004: Industrials, oil, pharma, banks.. and Microsoft/Intel. Combined market value: ~$2.4T. Top 10 today: NVIDIA, Alphabet, Apple, Microsoft, Amazon, TSMC, Broadcom, Meta, Tesla and Aramco. 9 of 10 are tech. Combined value: ~$27.9T. NVIDIA (~$4.9T) is ~15x the value of the 2004 number one. And double the value of the 2004 top 10, *combined*. The game keeps changing. Faster, bigger, better. The one constant: be long on technology. The next decade or two are going to be incredible.
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The pace at which @AnthropicAI is shipping new features for Claude Code is incredible. I've worked in software for 30 years and I’m struggling to think of anything comparable. Early AWS is maybe the only thing even close?
New in Claude Code: /ultrareview (research preview) runs a fleet of bug-hunting agents in the cloud. Findings land in the CLI or Desktop automatically. Run it before merging critical changes—auth, data migrations, etc. Pro and Max users get 3 free reviews through 5/5.
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Josh Stein retweeted
Small step for a finger on "post tweet" button. Big step for millions of future AI agents doing useful work for us.
Today we're announcing Core Automation Our objective: systems that optimize and automate work, starting with research itself.
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Josh Stein retweeted
Pretty fired up to be backing @MillionInt @_arohan_ @juliacvillagra and the rest of the elite crew at Core! An AI that builds for AI, from ground up! One of the most ambitious team that we've backed at @thresholdvc!
Today we're announcing Core Automation Our objective: systems that optimize and automate work, starting with research itself.
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