Joseph Spisak

VP of Product & Head of Open Source | Ex: Meta, Google, Amazon

πŸ“ United StatesπŸ”„ Updated September 2026πŸ’Ό 9 investmentsπŸ“… 5 years investingπŸ—“ Last invested Jun 2025
VC🌍 United States
9
Total investments
3
Early stage
0
Mid stage
0
Late stage
5y
Years active

Portfolio

9 investments Β· sorted by recency
All investments
Early stage
Mid stage
Late stage
Angel Investor
Jun 2025
Towards universal intelligence.
Angel Investor
Jun 2025
The shift is already here: millions of people are getting brand recommendations from ChatGPT, Claude, and Gemini instead of search engines. The question isnt whether this matters β€” its whether youre winning those conversations or losing them. Evertune is the marketing platform that delivers complete AI search visibility, showing you exactly where your brand stands when people discover you through AI β€” and how to show up stronger. Were not just another analytics dashboard. Were your strategic partner for Generative Engine Optimization (GEO) and AI SEO in the economy thats reshaping everything. Why Leading Enterprise Marketers Choose Evertune: Brand Monitoring That Matters: We analyze over one million AI responses about your brand monthly, giving you the statistical confidence to actually bet your strategy on the data. Think election polling, not focus groups. Actionable Content Strategy, Not Just Scorecards: We dont just show you where you stand. We decode exactly what gets brands mentioned more often and ranked higher, then hand you the specific messaging and distribution moves to climb the AI recommendation leaderboard. Purpose-Built for AI, Not Retrofitted: While competitors force old search tools into new problems, we built from scratch for how AI actually thinks. Youre not just getting insights β€” youre getting the precise playbook to improve your performance as this new channel matures. Strategic Partnership: Youre not just buying software β€” youre getting partners who understand this territory. We provide ongoing training and guidance to turn AI visibility data into actual competitive advantage. Proven Leadership: Our founders helped build The Trade Desk, pioneering data-driven digital advertising. Weve shepherded an entire industry through transformation before, and we know exactly how to navigate the chaos when everything shifts overnight. The future belongs to brands that master AI-mediated discovery.
Board Member
Oct 2024
An open source machine learning framework that accelerates the path from research prototyping to production deployment. PyTorch is an open source project at the Linux Foundation.
Angel and Advisor
Sep 2024
Reflection is a research lab making intelligence open and accessible for everyone to use, customize, and build on. Our team previously built frontier LLMs at labs like DeepMind, OpenAI, and Anthropic. We believe AI should be built in the open, with transparent research and collaborative development. That means giving enterprises, governments, and sovereign entities true ownership and control of AI that performs at the highest level. Our mission: make intelligence open and accessible to all.
Angel Investor
Apr 2024
Answer.AI is a leading educational AI platform with over 1.5 million students in North America. Established in early 2023, we are dedicated to creating a fun, engaging learning experience for any student, in any subject, and at any institution. Powered by LLMs and other advanced technology, Answer.AI seamlessly integrates fun and micro-achievements into every learning step. This experience not only inspires curiosity but also elevates students beyond conventional academic grades. In our vision, everyone will have access to the best learning resources and motivational support through AI, one conversation at a time.
early stageHigher Education
Angel Investor
Sep 2023
Company behind ESM3
Angel Investor
Apr 2023
Contextual AI is the leader in retrieval-augmented generation (RAG). Founded by the pioneers of RAG, Contextual AI’s mission is to change the way the world works through AI. The Contextual AI platform empowers enterprises to build specialized RAG agents for expert knowledge work. Fortune 500 companies, such as HSBC and Qualcomm, rely on Contextual AI to boost productivity for thousands of their subject-matter experts. You can learn more and explore open roles at contextual.ai
Angel Investor
Apr 2023
We believe that AI application development extends beyond ML researchers, and that it will be software engineers applying AI across verticals and industries. Our mission is to empower software developers and product teams, not just ML practitioners, to build with generative AI.
Angel Investor
May 2021
Were an AI research company that builds reliable, interpretable, and steerable AI systems. Our first product is Claude, an AI assistant for tasks at any scale. Our research interests span multiple areas including natural language, human feedback, scaling laws, reinforcement learning, code generation, and interpretability.
Experience Β· 12 entries
All (12)
Investments (9)
Board (1)
2025
Limited Partner
Sep 2025
Sequoia helps daring founders build legendary companies from idea to IPO and beyond. We aim to be the first true believers in tomorrow’s most valuable and enduring businesses. We partner with a few outliers each year and go all-in, providing them with the hands-on help required at every stage of the company building journey. Our expertise comes from 50 years of working with legendary founders like Steve Jobs, Larry Page, Jan Koum, Adi Tatarko, Brian Chesky, Jensen Huang, Anne Wojcicki, Eric Yuan, Patrick Collison, Julia Hartz, and Sebastian Siemiatkowski. In aggregate, Sequoia-backed companies account for more than 25% of NASDAQs total value. Since our inception, the vast majority of the money we invest has been on behalf of nonprofits and schools like the Ford Foundation, Mayo Clinic and MIT, which means most of the returns we generate benefit these great causes.
Angel Investor
Jun 2025
Towards universal intelligence.
Angel Investor
Jun 2025
The shift is already here: millions of people are getting brand recommendations from ChatGPT, Claude, and Gemini instead of search engines. The question isnt whether this matters β€” its whether youre winning those conversations or losing them. Evertune is the marketing platform that delivers complete AI search visibility, showing you exactly where your brand stands when people discover you through AI β€” and how to show up stronger. Were not just another analytics dashboard. Were your strategic partner for Generative Engine Optimization (GEO) and AI SEO in the economy thats reshaping everything. Why Leading Enterprise Marketers Choose Evertune: Brand Monitoring That Matters: We analyze over one million AI responses about your brand monthly, giving you the statistical confidence to actually bet your strategy on the data. Think election polling, not focus groups. Actionable Content Strategy, Not Just Scorecards: We dont just show you where you stand. We decode exactly what gets brands mentioned more often and ranked higher, then hand you the specific messaging and distribution moves to climb the AI recommendation leaderboard. Purpose-Built for AI, Not Retrofitted: While competitors force old search tools into new problems, we built from scratch for how AI actually thinks. Youre not just getting insights β€” youre getting the precise playbook to improve your performance as this new channel matures. Strategic Partnership: Youre not just buying software β€” youre getting partners who understand this territory. We provide ongoing training and guidance to turn AI visibility data into actual competitive advantage. Proven Leadership: Our founders helped build The Trade Desk, pioneering data-driven digital advertising. Weve shepherded an entire industry through transformation before, and we know exactly how to navigate the chaos when everything shifts overnight. The future belongs to brands that master AI-mediated discovery.
2024
Board Member
Oct 2024
An open source machine learning framework that accelerates the path from research prototyping to production deployment. PyTorch is an open source project at the Linux Foundation.
Angel and Advisor
Sep 2024
Reflection is a research lab making intelligence open and accessible for everyone to use, customize, and build on. Our team previously built frontier LLMs at labs like DeepMind, OpenAI, and Anthropic. We believe AI should be built in the open, with transparent research and collaborative development. That means giving enterprises, governments, and sovereign entities true ownership and control of AI that performs at the highest level. Our mission: make intelligence open and accessible to all.
Show all 12 entries ↓
Investment activity
2021–2025 Β· 9 investments
20211202332024320252
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