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# Composo
- URL: https://entrepreneurplus.co.uk/startups/composo/
- Published: 2026-10-15T15:58:52.000Z
- Updated: 2026-10-15T15:58:52.000Z
- Description: Evaluation platform that scores and monitors the quality of AI agents and LLM applications.
- Author: Editorial Desk
- Tags: #ep-startup

![Composo logo](https://storage.ghost.io/c/05/a4/05a4a052-18ab-4836-8924-ec8b322c371c/content/images/2026/10/composo-logo.svg) 

Evaluation platform that scores and monitors the quality of AI agents and LLM applications.

- AI & Data
- Pre-seed
- London

Sector

AI & Data

Stage

Pre-seed

Based in

London

Founded

2023

Funding raised

$2M

Website

[composo.ai](https://composo.ai/?ref=entrepreneurplus.co.uk)

Composo builds evaluation tools for teams shipping AI products. Its platform turns expert judgement into automated, consistent scores that measure how well AI agents and large language model applications perform, helping teams catch failures such as omissions before release and monitor quality in production. The company also publishes research and benchmarks, including work on AI medical scribes. It was co-founded by a medical doctor and former QuantumBlack AI lead and a machine learning engineer, is based in London, and reports SOC 2 Type II certification. Its pre-seed round was led by Twin Path Ventures.

## Team

- **Sebastian Fox**, CEO & Co-founder [LinkedIn](https://www.linkedin.com/in/seb--fox/?ref=entrepreneurplus.co.uk)

[LinkedIn](https://www.linkedin.com/company/composo/?ref=entrepreneurplus.co.uk)

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