A16Z Speedrun
2865 Sand Hill Rd, #101, Menlo Park, CA, 94025, United States
Overview
A16Z GAMES Speedrun is the speedrun in early-stage accelerator for startups at the intersection of Tech x Games.
- Total investments
- 31
- Lead investments
- 9
- Investments · 12mo
- 18
- Active investors
- 7
Investment portfolio
- Space
Led · Seed · Aug 2026
Space develops an AI-native filesystem that sits above the operating system to let applications, people, and agents access cloud-hosted files as if they were local without full-file downloads or duplicated copies. Files appear in native file browsers and open in existing applications while Space streams only the exact byte ranges required in real time. The company launched a prototype in November 2025 and is currently in private beta with roughly 100 users and teams and an organic audience of over 80,000. Founders Matthew Ao, Arihant Bapna, and Jason Zhao built the product from operational pain points encountered while working with terabytes of media. After raising a $2.4M pre-seed led by a16z Speedrun, Space plans to focus initial go-to-market efforts on video, marketing, and AEC industries and then expand into AI training-data infrastructure, media and entertainment, and other data-intensive workflows.
- Cascade
Led · Seed · Jul 2026
Cascade leverages AI to surface engineering, architecture and construction project opportunities by reading signals such as bond filings, permits, budget announcements, capital plans, property transactions, earnings transcripts and meeting minutes. The company says its platform has surfaced more than $10 billion in project opportunities for clients, including firms that build for major projects at JFK and LaGuardia airports. Cascade was founded by Hannia Zia and Joana Ferreira, who previously worked at Google and met at UnlikelyAI. The startup plans to use the seed funding to deepen its network and accelerate customer adoption. The company positions itself as reducing reliance on manual prospecting processes for architecture, engineering and construction firms. No revenue, valuation or prior financing details were disclosed in the article.
- Clair Health
Participated · Seed · Jul 2026
Clair Health is developing a bracelet-style wearable and companion app designed to monitor women's hormone patterns using a proprietary math model that maps brain–ovary interactions. The company plans to launch the device and app in November and says its first production run of 5,000 devices sold out, while more than 25,000 people are on the waitlist. Early orders sold for $295 with a free subscription; the planned retail price is $369 with a paid subscription. Clair has seven full-time employees and about 14 contract and part-time workers. It was cofounded by Stanford graduates Jenny Duan (CEO) and Abhinav Agarwal (CTO), who cite prior work in women's health advocacy and glucose-monitoring startups as background.
- Fearn
Participated · Seed · Jun 2026
Fearn offers an AI-native patent drafting platform that composes dozens of small, purpose-built models to generate patent drafts and automated labeled figures with formal guardrails against key prosecution failure modes. The company says its tools cut patent drafting from 50+ hours to about 20 minutes and reduce costs by up to 96%, and it offers a flat $2,000 per patent pricing option. Fearn self-hosts all models and provides enterprise deployment choices (customer-hosted VPC, single-tenant VPC, or multi-tenant VPC) and compliance with SOC 2, ISO 27001, ISO 27701, and GDPR. The founders bring patent-law and technical research experience, including prior roles at Morrison Foerster, Google Research, and Caltech research backgrounds. Fearn lists customers including Unity, Dandelion Energy, Serova Bio, Capsule, Syncere, Sans Strings, Taya, and Cainex. The company was founded in 2025 and is headquartered in San Francisco.
- Idilio
Participated · Seed · Jun 2026
Idilio produces vertical micronovelas with episodes of one to three minutes and seasons that can reach up to 80 chapters, aiming for strong hooks in the first three seconds. The company describes itself as data-first: it writes and produces initial chapters, publishes them in-app and on social, and uses rapid metrics to decide whether to rewrite or scale a story. Idilio reports roughly two million downloads in 120 countries and about 45 minutes of daily use per user, which the company says is double Netflix's mobile time by its metrics. Founder Gabriela Tafur, a Colombian lawyer, TV presenter and Stanford MBA, built the product after observing short-form dubbed dramas in mobile use. The company targets Latin American melodrama as a cultural differentiator versus Chinese-origin micro-series and aims to scale its audience internationally. The model emphasizes low-cost, fast production cycles but faces sector risks such as low retention and variable content quality.