01 Advisors
VC Fund
San Francisco, United States
01 Advisors is a venture and advisory firm helping founders go from building a product to building a company. The firm was founded in 2018 and is headquartered in San Francisco, California.
- Total investments:
- 81
- Last investment:
- Lead investor:
- 30%
- Fund size:
- $132M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries 01 Advisors invests in
Stages 01 Advisors invests in
Countries 01 Advisors invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Round size
- Series A
- $9M–$35M
- Series B
- $15M–$75M
- Series C
- $40M–$150M
Investment Focus
Industry
- Software 19 (23%)
- Artificial Intelligence 14 (17%)
- SaaS 9 (11%)
- Financial Services 8 (10%)
- Information Technology 8 (10%)
Stage
- Series B 20 (25%)
- Series A 16 (20%)
- Series C 12 (15%)
- Series D 7 (9%)
- Series E 3 (4%)
Country
- United States 41 (51%)
- Canada 1 (1%)
- France 1 (1%)
- Israel 1 (1%)
- United Kingdom 1 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Adam Bain
Co-Founder & Managing Partner
|
Co-Founder & Managing Partner | Total investments: 34 | Find email | |
Richard Costolo
Managing Partner & Co-Founder
|
Managing Partner & Co-Founder | Total investments: 66 | Find email |
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| LM Arena provides a platform for testing AI models. LM Arena serves as an essential resource for researchers and developers worldwide. As the AI field expands, the importance of reliable benchmarking tools like LM Arena remains undeniable. The company also operates Chatbot Arena, a specialized service for evaluating artificial intelligence systems. | $200M / Series B / Oct 08, 2026 | ||
| Linear allows the user to manage software development and track bugs. Built for speed and efficiency.The founders started Linear from their own frustrations building software projects in successful high-growth companies like Airbnb, Coinbase and Uber. The founders wanted to create the tools that focus us and its team in making progress, not getin the way. Tools that are fast and efficient. Speed and performance were the main things Linear focuses on early on and keep focusing on that. | $99M / Secondary Market / Aug 26, 2026 | ||
| Capchase is a fintech company that provides financial solutions to startups by allowing access to funds as they grow. | $26M / Venture - Series Unknown / May 27, 2026 | ||
| Crosby is a company with programmers from Ramp, Vanta, Meta, and Google joining attorneys. | $60M / Series B / Mar 31, 2026 | ||
| Cape develops privacy-enabling technology that allows users to reclaim their privacy and security on electronic devices. The company's technology communicates with electronic devices while maintaining anonymity and privacy without compromising user experience. | $100M / Series C / Mar 19, 2026 | ||
| Render offers the easiest cloud for developers and teams to host any application or website. The company’s goal is to completely eliminate the need to manage servers by offering a cloud with the best developer experience combined with incredible flexibility and power. This will ultimately improve all software and enable entirely new kinds ofapplications. Render was founded in 2018 and is based in San Francisco. | $100M / Series C / Feb 17, 2026 | ||
| Open, adaptable email security. | $150M / Series C / Oct 28, 2025 | ||
| Micro1 offers a platform that converts human expertise into structured datasets and recruitment processes for companies using AI. It provides a Data Engine that handles the recruitment of experts and manages human-in-the-loop operations to generate data used in post-training of AI models. It also provides Zara, an AI recruiter agent, whichdiscovers, vets, and qualifies talent globally for enterprises and large-volume recruitment firms. The company maintains a Research Lab that publishes studies related to evaluating AI-assisted recruitment, speech-to-text systems, proctoring models, and other aspects of human-data integration into AI systems. It delivers APIs to access its human-data services and recruiter tools. | $35M / Series A / Sep 12, 2025 | ||
| Baseten provides a platform for training, deploying, and serving artificial intelligence models in production environments. It supports open-source, fine-tuned, and custom models, converting them into API endpoints with capabilities such as autoscaling, observability, and optimized model serving. The platform manages infrastructure componentsincluding containerization, GPU scheduling across multiple cloud providers, and performance optimizations to support large-scale inference workloads. Baseten also offers preconfigured model APIs and deployment options that can run either on its managed cloud service or within a customer's own environment. Its tools are designed to help developers build, manage, and scale AI applications while maintaining flexibility in how models are hosted and executed. | $150M / Series D / Sep 05, 2025 | ||
| Attio is an AI-native CRM platform for go-to-market teams. It helps manage customer relationships, automates workflows, and provides data-driven reporting. The service automatically enriches data from connected sources like email and calendars. | $52M / Series B / Aug 26, 2025 | ||
| See all 81 investments → | |||
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FAQ
What does 01 Advisors invest in?
01 Advisors invests primarily in Software, Artificial Intelligence and SaaS startups, most often at Series B and Series A stage. Most of the 81 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does 01 Advisors invest in?
01 Advisors typically joins rounds of $9M–$35M at Series A, $15M–$75M at Series B and $40M–$150M at Series C. These are whole funding-round sizes, not 01 Advisors's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds 01 Advisors took part in.
How do I contact 01 Advisors?
Public channels for 01 Advisors include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at 01 Advisors?
The team at 01 Advisors includes Adam Bain (Co-Founder & Managing Partner) and Richard Costolo (Managing Partner & Co-Founder). The Team section lists each member with their title, investment count and links.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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