Greg Brockman
Angel Investor
San Francisco, United States
Greg Brockman is a seed investor in San Francisco focused on Software and Artificial Intelligence. Greg Brockman is based out of San Francisco, California, and is the President, Chairman and Co-Founder of OpenAI. Greg previously worked at Stripe as a CTO. Greg Brockman attended the Harvard University.
- Total investments:
- 40
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Greg Brockman invests in
Stages Greg Brockman invests in
Countries Greg Brockman invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $2.3M–$8.5M
- Series A
- $4.5M–$30M
Investment Focus
Industry
- Software 16 (40%)
- Artificial Intelligence 14 (35%)
- Machine Learning 9 (23%)
- Developer Tools 5 (13%)
- SaaS 3 (8%)
Stage
- Seed 19 (48%)
- Series A 11 (28%)
- Funding Round 3 (8%)
- Series B 2 (5%)
- Series C 1 (3%)
Country
- United States 29 (73%)
- Canada 1 (3%)
- United Kingdom 1 (3%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Netomi is a provider of AI-first customer experience designed for the Relationship Economy. Netomi's AI-powered virtual agents automatically resolve 80% of routine customer service inquiries, decreasing resolution time, increasing customer satisfaction and support quality, while reducing costs. The patented, no-code platform works acrossmessaging, chat, email and voice, and understands 100+ languages. Netomi is based in San Mateo and has offices in New York, Toronto and India. | $110M / Series C / Apr 30, 2026 | ||
| Braintrust offers an AI stack to simplify the process from evaluations to data management, ensuring seamless integration into any business. Braintrust simplifies the evaluation process by facilitating easy scoring, logging, and visualization of outputs. Users can investigate failures, monitor performance trends, and address queries like identifyingregressions or assessing new models. The platform offers a Prompt Playground, allowing users to compare multiple prompts, benchmarks, and input/output pairs across runs, enabling both ephemeral tinkering and experiment evaluation on large datasets. In Continuous Integration, Braintrust seamlessly integrates into workflows, enabling progress tracking on the main branch and automatic comparison of new experiments with live versions before deployment. With a focus on Datasets, the platform enables the effortless capture of rated examples from staging and production, incorporating them into versioned "golden" datasets stored in the cloud. This ensures the evolution of datasets without jeopardizing evaluations dependent on them. | $36M / Series A / Oct 08, 2024 | ||
| Lambda provides GPU-powered hardware, cloud, and software solutions tailored for AI model development, training, fine-tuning, inference, and deployment. Its offerings include on-demand GPU cloud instances and multi-node clusters, desktop and server workstations equipped with NVIDIA GPUs, a curated software stack for seamless integration of MLtools, and consulting services that help build scalable ML infrastructure and workflows. | $44M / Series B / Mar 21, 2023 | ||
| Sandbar builds software to stop financial crimes. | $4.8M / Seed / Jan 24, 2023 | ||
| CoRise is where anyone can learn the most in-demand skills and actually put them to work. Where leading organizations build technical skills at scale. It’s where industry-leading instructors show how they tackle real problems, with real methods. And where the perfect combination of teaching best practices, top practitioners, technology, andcollective peer learning makes real growth accessible to us all. | $8.5M / Seed / Sep 28, 2022 | ||
| Uplimit is where anyone can learn the most in-demand skills and actually put them to work. Where leading organizations build technical skills at scale. It’s where industry-leading instructors show how they tackle real problems, with real methods. And where the perfect combination of teaching best practices, top practitioners, technology, andcollective peer learning makes real growth accessible to us all. | $8.5M / Seed / Sep 28, 2022 | ||
| Gantry is built on cloud-native technologies and designed to scale to terabytes of data. They are computed metrics about data quality, data drift, model performance, and user satisfaction. They are deploying machine learning models with confidence. | $23.9M / Series A / Jun 07, 2022 | ||
| Lumos is an IT company that provides secure management processes. They offer SaaS management and access management services. Additionally, they provide flexible workflows and spend management solutions. | $30M / Series A / May 03, 2022 | ||
| 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. | $8M / Seed / Apr 26, 2022 | ||
| Through streamlined data model and powerful query language, we make working with data productive, pleasant and efficient for developers and data engineers. | $4M / Seed / Apr 22, 2022 | ||
| See all 40 investments → | |||
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FAQ
What does Greg Brockman invest in?
Greg Brockman invests primarily in Software, Artificial Intelligence and Machine Learning startups, most often at Seed and Series A stage. Most of the 40 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Greg Brockman's check size?
Greg Brockman typically joins rounds of $2.3M–$8.5M at Seed and $4.5M–$30M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Greg Brockman participates in.
How do I contact Greg Brockman?
Public channels for Greg Brockman 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.
When did Greg Brockman last invest?
The most recent investment recorded for Greg Brockman closed in Apr 2026. Shizune tracks 40 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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