Justine Moore
Partner at Andreessen Horowitz
Reviewed Updated Jul 19, 2026This profile is AI-generated. If you spot an error, please help us fix it by sharing a URL to the correct information.
Background
Justine Moore is a partner on the investing team at Andreessen Horowitz (a16z), focused on AI — both foundation models and applications, with an emphasis on generative media and consumer AI tools 1 2. She holds a BA in Economics and an MBA from Stanford. Before joining a16z, she was an early-stage investor at CRV backing consumer and SMB tech, and earlier worked on Goldman Sachs’ Private Equity team 1 2. Together with her twin sister Olivia Moore (also a partner at a16z), she co-authors the “Accelerated” newsletter tracking consumer AI trends 3.
Stated Thesis
Justine Moore publicly frames her focus as AI foundation models and AI-native applications, with a particular emphasis on generative media (image, video, voice, avatars) and creative-professional tools 1 2. She and her sister Olivia have written extensively for the a16z blog on themes including consumer AI as a “momentum” business, AI avatars escaping the uncanny valley, and the shape of the generative video landscape 4 5.
Inferred Thesis
Based on the small number of investments publicly attributed to her (via a16z investment announcements), the pattern is: AI-native generative media companies at seed / Series A stage. Verified investments include ElevenLabs (voice), Black Forest Labs (image generation), Krea (creative interface), and Hedra (character animation) 6 7 8 9. Sample size is too small (four verified announcements) to compute reliable percentages, so sector percentages are omitted. The stage pattern is early — Series A or earlier — and check-size ranges reported in third-party trackers describe USD 500K–40M 2.
Portfolio
| Company | Year | Stage | Source |
|---|---|---|---|
| ElevenLabs | ~2023 | Series A (co-led) | 6 |
| Black Forest Labs | 2024-08-01 | Seed (co-authored announcement) | 7 |
| Krea | 2025-04-07 | Announced | 8 |
| Hedra | ~2025 | Series A (announced) | 9 |
This table reflects only investments where Justine Moore is publicly credited as a co-author on the a16z investment announcement post. It is not comprehensive of every deal she has touched.
In Their Own Words
No independently sourced first-person quotes were located during this research pass beyond her published a16z blog posts. Her substantive writing includes long-form analysis such as “There is no God Tier video model” and “In Consumer AI, Momentum Is the Moat,” which capture her framework more thoroughly than any short quote 4 5.
What Founders Say
No independently sourced founder testimonials found in this research pass.
Sources
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Andreessen Horowitz, “Justine Moore, Partner at Andreessen Horowitz” (author page), accessed July 2026. https://a16z.com/author/justine-moore/↩↩↩
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VCSheet, “Justine Moore (Andreessen Horowitz) — VC Breakdown,” accessed July 2026. https://www.vcsheet.com/who/justine-moore↩↩↩↩
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Fast Company, “Justine and Olivia Moore are driving a16z’s investment in cutting-edge AI,” accessed July 2026. https://www.fastcompany.com/91451709/justine-olivia-moore-andreeessen-horowitz↩
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Andreessen Horowitz (Justine Moore), “There is no God Tier video model: But there is something better,” accessed July 2026. https://a16z.com/there-is-no-god-tier-video-model-but-there-is-something-better/↩↩
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Andreessen Horowitz, “In Consumer AI, Momentum Is the Moat,” accessed July 2026. https://a16z.com/momentum-as-ai-moat/↩↩
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Andreessen Horowitz, “Investing in ElevenLabs” (announcement post), accessed July 2026. https://a16z.com/announcement/investing-in-elevenlabs/↩↩
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Andreessen Horowitz, “Investing in Black Forest Labs” (announcement post), August 1, 2024, accessed July 2026. https://a16z.com/announcement/investing-in-black-forest-labs/↩↩
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Andreessen Horowitz, “Investing in Krea” (announcement post), April 7, 2025, accessed July 2026. https://a16z.com/announcement/investing-in-krea/↩↩
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Andreessen Horowitz, “Investing in Hedra” (announcement post), accessed July 2026. https://a16z.com/announcement/investing-in-hedra/↩↩