AI Agent · Decrypt
Perplexity's AI Agent Now Has a Brain That Learns From Its Own Mistakes
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Perplexity launched Brain today, a memory system for its Computer agent that gets smarter the more you use it.
Key facts
- Perplexity's own early metrics show Brain boosts answer correctness by 25% on tasks Computer has already handled, improves recall by 16%, and cuts the cost of context-heavy tasks by 13%
- Brain is for people already paying $200 a month for Perplexity Computer
- Hermes, Nous Research's self-improving agent released in February 2026, goes further
- Brain is in Research Preview starting today for Max and Enterprise Max subscribers
Summary
Perplexity launched Brain, a memory system for Computer that builds a context graph of past sessions, sources, and corrections—then synthesizes it overnight into a personal LLM wiki loaded before each new task. Perplexity's own early metrics show Brain boosts answer correctness by 25% on repeated tasks, recall by 16%, and cuts the cost of context-heavy tasks by 13%. Brain is rolling out today in Research Preview for Max ($200/month) and Enterprise Max subscribers; memories are accessible under "Customize" in the sidebar. “With Brain, Computer starts each task with full context of your projects, decisions, and sources instead of from scratch,” Perplexity says.