Perplexity has launched Brain, a self-improving memory system for its agent product, Computer. Brain is a self-improving memory system. It builds a context graph of the work Computer performs. At set intervals, such as overnight, Brain reviews that graph and teaches itself how to do the work better. Brain is being rolled out to Perplexity Max and Enterprise Max subscribers in Research Preview. Perplexity frames memory along two axes. The first is what the memory is about and the second is what the memory is for.
According to Perplexity, Brain allows Computer to begin each new task with full context of a user's past projects, decisions, and sources rather than starting from scratch. On tasks that require historical context, the company says Brain improves answer correctness by 25%, increases recall by 16%, and reduces cost per task by 13%.
The feature represents an evolution of Perplexity Computer, the multi-model AI agent system the company launched in February 2026. Computer orchestrates 19 AI models to autonomously handle research, coding, design, and project management workflows from a single prompt.
Until now, however, Computer lacked a mechanism to learn across sessions in a structured way.
Brain is available as a research preview for Perplexity Max and Enterprise Max subscribers, accessible under "Customize" in the sidebar. The Max tier costs $200 per month.
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