Justine Moore

Justine Moore grew up in OregonOregonOregon (officially the State of Oregon) is a state on the Pacific coast of the western United States; its capital is Salem and its largest city is Portland. It was admitted to the Union on February 14, 1859, as the 33rd state. Its population in the 2020 census (April 1, 2020) was 4,237,256.Open the full entry and attended Stanford UniversityStanford UniversityStanford University is a research university in California founded by Leland and Jane Stanford in 1885 and opened in 1891.Open the full entry together with her twin sister Olivia Moore. In an interview the sisters recalled that their mother had worked in venture capital in Chicago; they arrived at Stanford considering journalism, came into contact with technology and investing by covering startups for The Stanford Daily, and chose to major in economics.⁠[1]

In 2014 Justine and Olivia co-founded Cardinal Ventures for Stanford student founders who wanted to keep studying while building their companies. In February 2015 Stanford Student Enterprises announced the program, which offered ten weeks of coaching and classes, meetings with mentors and a chance to present to investors, along with a $1,000 grant to selected teams without taking equity.⁠[2][3]

The sisters later recalled that running the incubator put them in touch with many student founders and with investment firms including CRV, and that it was where they began to develop their approach to evaluating early-stage companies.⁠[1]

In 2016 Moore received a BA in economics from Stanford University. After graduating she worked on the private equity team at Goldman Sachs and then joined CRV, investing in early-stage consumer and small and medium-sized business companies. At CRV she worked with Olivia and partner Saar Gur; she first met Gur to discuss consumer investing, and the person who introduced them then suggested that Gur also meet Olivia.⁠[1][4]

In a joint Supermaker interview published in January 2020, the Moore sisters described their approach to consumer investing: they were watching real-time mobile interaction, the creator economy, and social networks and marketplaces unbundled from large platforms. They stressed unit economics and the relationship between customer lifetime value and acquisition cost, and were optimistic about software infrastructure serving physical-goods businesses.⁠[1]

At the time the sisters jointly ran Accelerated, a newsletter for technology and venture capital readers, and also published research on social platforms. They argued that specialized, in-depth content helps investors build credibility and that research and data such as retention and conversion would matter more and more in early-stage investment decisions.⁠[1]

In her author note in the January 30, 2022 issue of Accelerated, Moore listed her role as head of go-to-market (Head of GTM) at Canal. That issue discussed creator monetization, the relationship between platforms and brands, and how direct-to-consumer brands choose where to focus among product, technology investment and distribution.⁠[5]

On April 7, 2022, Moore announced that she was joining Andreessen Horowitz (a16z) as a partner on its consumer investing team. The April 10 issue of Accelerated added that she would focus on the future of commerce, including consumer-facing platforms and brand infrastructure; Olivia had joined a16z’s consumer team in the summer of 2021.⁠[6]

In February 2023 Moore and Connie Chan co-published “Generative AI: The Next Consumer Platform,” which treated generative AI as a platform shift that could give rise to new consumer products. The article covered personalized search, learning, companionship, content creation, games and tools for small and medium-sized businesses, and emphasized the opportunity to turn general model capabilities into specific user experiences.⁠[7]

On June 20, 2023, Moore co-signed, with Jennifer Li and Bryan Kim, a16z’s announcement of its investment in ElevenLabs, which said a16z was co-leading the company’s Series A with Nat Friedman and Daniel Gross. The announcement discussed applications of speech synthesis, voice design and voice cloning in audiobooks, game characters and multilingual content, and offered a read-aloud version of the article in a voice generated by ElevenLabs.⁠[8]

On May 15, 2025, Moore co-signed, with Troy Kirwin, Jonathan Lai and Matt Bornstein, a16z’s announcement of its Series A investment in Hedra. Hedra turns images, audio tracks or text scripts into character-centered video, handling lip sync, facial expression, pose and background animation. The announcement acknowledged that the technology did not yet have the quality and control needed for feature-film release and positioned it as a tool that extends what creators can do.⁠[9]

On August 12, 2025, Moore and Alex RampellAlex RampellAlex Rampell (Alastair Rampell) is an entrepreneur and investor, a general partner at Andreessen Horowitz and leader of its Apps practice. He co-founded TrialPay and Affirm and serves on the boards of Wise and Rocket Companies.Open the full entry published “AI x Commerce,” which grouped shopping by the effort a decision takes into impulse purchases, everyday essentials, lifestyle purchases, functional purchases and major life purchases. They argued that AI plays a different role in each: essentials suit price monitoring and replenishment, goods that need comparison suit research agents, and major purchases usually still call for evaluation in person.⁠[10]

The article also listed the foundations commerce agents need, including trustworthy and timely product data, interfaces across retail platforms, identity and memory that adapt as preferences change, and feedback from actual use. These points are the authors’ analysis of and expectations for AI in commerce.⁠[10]

On October 6, 2025, Moore announced in a public post that she had moved to a16z’s infrastructure team and would continue to invest in AI creative tools and companionship products. She called ElevenLabs her first investment on her a16z team and mentioned working with Krea, Black Forest Labs, Hedra and WaveForms AI; she gave working more and more with researchers and focusing on foundation models as the reasons for the move.⁠[11]

The areas of focus she listed in the post included more controllable video editing, real-time interactive video models, and large language models for companionship apps that emphasize engaging conversation.⁠[11]

In a16z’s “Big Ideas 2026: Part 1,” published on December 9, 2025, Moore predicted that AI creative tools would become multimodal: users could combine video, reference images and sound to extend a scene, adjust a character or change a camera angle. She stressed that innovation is needed at both the model and the application layers, and suggested that people ranging from meme makers to professional directors may need different products.⁠[12]

On February 9, 2026, Moore co-signed, with Marco MascorroMarco MascorroMarco Mascorro is a roboticist, AI researcher, and investor who co-founded the retail and warehouse robotics company Fellow Robots and was formerly a partner at Andreessen Horowitz, where he led or took part in investments in AI companies including Cursor, Thinking Machines, and Black Forest Labs.Open the full entry and Martin CasadoMartin CasadoMartin Casado is a computer scientist, entrepreneur and venture capitalist who is a general partner at Andreessen Horowitz, where he leads infrastructure investing. A major proponent of software-defined networking, he co-founded Nicira and served as its chief technology officer, and after VMware acquired the company he ran its networking and security business; he also co-founded the nonprofit MuralNet.Open the full entry, the announcement of a16z’s investment in Shizuku AI, which said a16z was leading its seed round. The team, based in Japan, builds AI for character and companionship experiences, exploring voice, personality and interactive feedback.⁠[13]

On April 23, Moore signed the announcement that a16z was leading Glif’s seed round. Glif focuses on multimodal content creation, combining different models and tools into reusable workflows to reduce the complexity of using multiple generative tools.⁠[14]

On June 3, Moore co-signed, with Alex Rampell, the announcement of a16z’s investment in Town, which said a16z was leading its $55 million Series A. Town is building an AI assistant that combines personal context, memory and proactive action; the $55 million figure is the total size of the round.⁠[15]

On July 23, 2026, Moore was interviewed by New Economies host Ollie Forsyth about generative video and micro-dramas. She said technical progress is lowering the barrier for small teams to produce narrative content, but that good stories, character continuity, pacing and the creator’s control over output still matter; tools suited to micro-dramas should be able to keep characters, voices and scenes consistent and support the matching narrative rhythm.⁠[16]

She also described how she tests products: trying different visual styles and models and comparing early-stage companies’ products with mainstream tools; when writing, she drafts an outline, compares the angles Claude and GPT offer and then rewrites on her own, and uses AI to check for unclear structure in presentation materials.⁠[16]

Discussing personal agents, she said she had used Town for several months before investing in it, giving examples of how it helped with introduction emails, follow-ups and receipts. She suggested that handing research and administrative work to agents could let independent creators and small and medium-sized businesses spend more time on creative work and on their businesses.⁠[16]

On September 10, 2026, Justine and Olivia co-signed a16z’s announcement of its investment in Highstock, which said a16z was leading its $30 million Series A. Highstock uses AI to help brands deal with excess inventory, matching goods with buyers and handling logistics and payments. The announcement specified that Olivia Moore would join Highstock’s board and that Jeff Jordan would serve as an adviser.⁠[17]

As checked on September 13, 2026, the a16z website listed Moore on the infrastructure investing team as a partner focused on AI foundation models and applications, and listed ElevenLabs, Krea, WabiWabiWabi is an AI company and product founded by Eugenia Kuyda. It evolved from generating personal mini-apps from prompts into a shared AI assistant and is operated by Wabi, Inc.Open the full entry, Black Forest Labs, Hedra, Mirelo, WaveForms AI and Viggle as investments she helped lead. The site also confirmed that she holds a BA in economics and an MBA from Stanford University.⁠[4]

Cardinal Ventures: the student startup incubator program Moore co-founded with Olivia in 2014.⁠[2]

CRV: the firm where Moore invested in early-stage consumer and small and medium-sized business companies before joining a16z. Official website: https://www.crv.com/ (opens in a new window).⁠[4][1]

Canal: Moore was head of go-to-market there in early 2022; its former website now carries the Rokt Catalog name. Website: https://www.shopcanal.com/ (opens in a new window).⁠[5][18]

Andreessen Horowitz (a16z): Moore joined in 2022 and is now a partner on the infrastructure investing team. Official website: https://a16z.com/ (opens in a new window).⁠[6][4]

Accelerated: the technology and venture capital newsletter written jointly by Justine and Olivia. Official website: https://www.readaccelerated.com/ (opens in a new window).⁠[6]

Personal X account: https://x.com/venturetwins (opens in a new window).⁠[19]