# Guide Labs

Startup profile on Capital Atlas: https://capitalatlas.ai/startups/guide-labs

- Industry: Software
- Headquarters: San Francisco, US
- Website: www.guidelabs.ai
- Total disclosed funding: $18M
- Latest round: Seed (Dec 4, 2025)
- Investors on record: 6

## About

Based in California, US, and founded in 2023 by Chief Executive Officer Julius Adebayo and co-founder Fulton Wang, Guide Labs operates as a SaaS-based company specializing in the development of interpretable foundation models. In December 2025, Guide Labs Inc. raised USD 9 million in seed funding led by new investor Initialized Capital, with participation from other new investors Tectonic Ventures, Y Combinator, and E14 Fund. Returning investors Lombardstreet Ventures, Pioneer Fund, individual, and other unspecified investors also participated in the round.  

Guide Labs develops various models including large language models (LLMs), diffusion models, and large-scale classifiers to provide human-understandable explanations of their reasoning with features such as prompt and data attribution to identify the most influential aspects of a model's performance. The company offers solutions to convert data to customize outputs and explanations, making them ideal for a wide range of applications. 

The company plans to utilize the December 2025 funding to grow its operations and enhance its development activities.

## Funding rounds

- Seed, Dec 4, 2025, $9M — Y Combinator, Initialized Capital, E14 Fund, Tectonic Ventures, Pioneer Fund, Lombardstreet Ventures
- Seed, Jun 10, 2024, $9.3M — Pioneer Fund

## Investors

- Pioneer Fund (https://capitalatlas.ai/funds/pioneer-fund) — Seed
- Y Combinator (https://capitalatlas.ai/funds/y-combinator) — Seed
- Initialized Capital (https://capitalatlas.ai/funds/initialized-capital) — Seed
- E14 Fund (https://capitalatlas.ai/funds/e14-fund) — Seed
- Tectonic Ventures (https://capitalatlas.ai/funds/tectonic-ventures) — Seed
- Lombardstreet Ventures (https://capitalatlas.ai/funds/lombardstreet-ventures) — Seed