GreenPT

Dutch sustainable AI platform behind the Green L and Green R models.

GreenPT is a Dutch AI platform, founded by Robert Keus and Cas Burggraaf, that runs open-weight models on European infrastructure powered by renewable energy and sets out to be transparent about its environmental cost. Green L is its multilingual chat model, built on Mistral Small 3.2 24B with Dutch language tuning; Green R is its reasoning model, built on GPT-OSS 120B. Each also comes as a Raw variant without GreenPT's built-in system prompt.