Overview
- Eternal disclosed the new product in its Q2 FY27 shareholder letter on October 21, 2026, saying Dark has been used internally for several months while the company prepares a wider rollout.
- Dark uses end-to-end encryption and an encrypted memory management layer that users control so chat histories stay unreadable to the company, the letter states.
- The service runs fine-tuned frontier open-weight models on Eternal’s own infrastructure rather than building models from scratch, a choice aimed at keeping model workloads within the company’s control.
- Eternal is positioning Dark for founders, researchers, scientists, enterprises and governments that handle sensitive information, and it says the models are being trained to prioritise truthful answers.
- Key details remain pending: Eternal has not published benchmark results, pricing or a firm public launch date, and the company’s claim that it cannot read chats depends on specific key management, legal frameworks and implementation choices.