Chimera
An open-source, self-hostable AI agent that asks several models the same hard question and blends their answers, then plans, uses tools and checks its own work on longer tasks, remembering what works across sessions.
Chimera is an autonomous AI agent that, for difficult questions, queries several language models at once, has one model compare their answers, and has a final model write a combined response, rather than relying on a single model's answer. Beyond conversation it can be given a goal and will plan the work, use tools, edit files, run tests, and undo a change if it breaks something rather than leaving a partial edit in place.
It remembers user preferences and facts across conversations and can turn a repeated task into a reusable skill, though the project is explicit that measurable improvement from this accumulated learning is not yet proven. It can run as a chat bot on messaging apps or deployed on a server around the clock, is Apache-2.0 licensed, and the authors describe it as alpha quality with a large automated test suite but not yet battle-hardened in production.