Mindstone launches fair-source Rebel AI system for firms

Mindstone has released its AI agent system, Rebel, under a fair-source model. The software is free for individuals and organisations with up to 100 users.

Rebel connects to existing workplace tools and gives each employee a personal AI agent linked to a shared organisational memory. It stores workflows in plain files that can be moved between AI providers, and it can also run entirely on a user's device.

The release follows Mindstone's 250-person rollout of the system at Epignosis, the learning technology company behind TalentLMS. Rebel is also in use across the workforces of Memrise and YAP Media.

At Epignosis, every employee across departments including engineering, sales, finance, product and customer success now has an AI agent connected to company memory. After 12 weeks, the company said it had gained the equivalent of eight full-time roles, with that additional capacity redirected to growth.

The rollout gives Mindstone a live example of company-wide use at a time when many businesses are still testing AI tools in limited pilots. It argues that broader deployment, rather than isolated licences for individual staff, is more likely to produce measurable operational change.

Customer Rollout

Epignosis said adoption spread without a mandatory policy. According to Mindstone, employees internally referred to a "potatoes effect", in which one colleague's use of a personalised agent encouraged others to ask for access.

That pattern matters because one of the product's aims is to make workflow automation available to non-technical staff. Mindstone said marketing managers, finance analysts and customer support leads were building automated workflows within their first week.

Mindstone also linked the launch to wider shifts in the AI market, pointing to recent disruption caused by changes in model access and growing interest in using several models at once rather than relying on a single provider.

Rebel works with providers including Claude, Llama, OpenRouter and DeepSeek. Because workflows are stored in portable files, switching providers can be done without data migration, according to Mindstone.

Mindstone said that became important when some AI services became unavailable, and that Rebel customers were able to switch providers quickly. The approach reflects a broader push among some software groups to reduce dependence on a single vendor's model or infrastructure.

Shared Memory

Rebel was designed by Chief Technology Officer Greg Detre, a Memrise co-founder and former Chief Data Scientist at Channel 4. The system is built around the idea that knowledge created by one employee should remain available to colleagues and continue to inform later work.

In practice, the software connects to tools such as email, CRM systems, calendars, Slack and documents, then lets employees build agent-based workflows around those sources. Access permissions determine which parts of the shared memory each employee can see.

Mindstone said actions by agents, including sending emails, updating records and modifying files, require explicit user authorisation. The option to run on-device is intended for organisations that want to keep data on local machines rather than sending it to external services.

Mindstone is positioning the product as both software and a method for AI adoption inside businesses. Above the free threshold of 100 users, it offers a paid tier that includes an adoption dashboard, return-on-investment tracking and ongoing support.

Mindstone has raised USD $5 million from investors including Pearson Ventures, Moonfire Ventures and Zanichelli Venture. Chief Executive Officer and Co-Founder Joshua Wöhle previously helped scale SuperAwesome before its sale to Epic Games.

Epignosis described the rollout this way: "One of our employees told their manager at an OKR review that their targets were undeliverable. By the end of the quarter, after Rebel had automated the bulk of the underlying work, they over-delivered. We have seen this across the company. The border between learning and doing is fading out, and that changes everything about how you scale. Just software won't get you there. You need service, training, transformation and a system that gets smarter the more people use it," said Dimitris Tsingos, Chief Executive Officer of Epignosis.

Wöhle said Mindstone sees the launch as an alternative to buying stand-alone chatbot licences for staff. "Many companies are currently thinking that buying 500 ChatGPT licences translates into an AI strategy. It's not. It's 500 individual experiments with no memory and no connection to each other. Rebel is the difference between having an assistant and having a chief of staff: it knows your company, it learns from everyone in it, and it gets more useful every day you use it. We're fair-sourcing it because the benefit of AI should accrue to everyone, not just to whoever can afford the biggest vendor contract," said Joshua Wöhle, Chief Executive Officer and Co-Founder of Mindstone.