Danai Antoniou is Co-Founder and Chief Scientist at Gradient Labs, a London-based AI startup building safe, autonomous customer service agents for regulated industries such as financial services and fintech.

Danai studied Applied Statistics at the University of Oxford, turning down a scholarship to Cambridge, before joining Monzo as a Staff Machine Learning Engineer where she built an industry-first fraud detection system.

Danai champions trust-first leadership and inclusive hiring, advocating for transparency as a tool for collective progress and pushing to redefine deep tech leadership for the next generation of female founders.

As Chief Scientist, Danai leads the AI research direction at Gradient Labs, including pioneering RLFR (Reinforcement Learning from Feature Rewards), a technique that reduced LLM hallucinations by 58% at roughly 90x lower cost than conventional methods.

Gradient Labs hit $1M ARR within 4 months of launch, now touches over 32 million end users, and achieved the first live autonomous AI customer support deployment at a major regulated UK bank.