Business

Composal

Website
Founded 2026Origin source ↗Checked 2026-10-12

Overview

Check features, not code. Composal sends a swarm of agents to use your product like your users do. They test real flows and edge cases to show you what works, what breaks, and if it’s ready to ship.

Company description As recorded 2026-11-08

Product & workflow

Connect your repo, specs, and other sources of product intent - Notion, Posthog, Granola

Source-reported As recorded 2026-10-25

Founders & team

Previously Vex, VEX

Company history As recorded 2026-11-08

Pandelis Zembashis

Founder/CEO

I'm co-founder and CEO of Composal. We help engineering teams continually test and validate what they build: our agents use the product, check real user flows and discover bugs before release. Previously, as CTO at Cosine, I built AI coding agents and the infrastructure behind them, including one of the first CLI harnesses, sandboxed execution from scratch and large-scale repository mirroring for data generation and model training. Now I help teams validate software at scale.

Founder profile As recorded 2026-10-12

Jonathan Davies

Founder/CTO

Co-Founder and CTO of Composal. Previously Senior Software Engineer at PapayaDash. Before that built software for Telefonica, Mitie, and Vodafone

Founder profile As recorded 2026-10-12

Jan Moehlmann

Founder

Founder at composal.ai (YC F26). Previously built commercial functions at 11x, Encord, Tractable

Founder profile As recorded 2026-10-12
3team members reported
Source-reported As recorded 2026-10-12

Founded 2026 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthenriched profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedLondon, England, United Kingdom
Pricing evidenceA pricing page was detected
Maturity: Not assessed · 3 of 6 areas documented

Source-based assessment · automated evidence rules

The retained text does not establish product availability or customer use.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidencesourced peoplesourced founding yearpricing page observeddocumentation observed