Context is not memory
Recent messages are precise but finite. Once they leave the model's context window, another layer must preserve what still matters.
Memory and lore guide
Give the story a past—and the world something to stand on.
A clear guide to recent context, rolling summaries, long-term facts, persona boundaries, conversation branches, and lore that appears only when relevant.
Systems curriculum
5 field guides
Understand which layer remembers what, then organize facts and lore so the right context appears at the right time.
Context versus memory01
Editable durable facts02
Semantic world knowledge03
Working principles
Know which layer holds each fact.
Summaries preserve state
Narrative compression keeps plot, emotional dynamics, and open threads while intentionally sacrificing exact wording and minor detail.
Durable facts should be editable
Long-term memory is strongest when users can inspect, correct, pin, and delete the facts a character carries forward.
Lore should arrive by relevance
A World Book retrieves the locations, factions, rules, and people related to the current scene instead of injecting the whole encyclopedia every turn.
Reading path
Understand memory, then build the world.
01
What Your AI Character Actually Remembers - A Plain Guide to Reverie's Memory System
AI memory isn't magic - it's a layered system of long-term facts, automatic summaries, and per-persona context. This guide explains what your Reverie character actually keeps, what it loses, and how to make sure the important moments survive the next 100 messages.
02
The Memories You Never Had to Save
Not every important detail announces itself as important. Reverie's characters now take a second look at your conversations after they've gone quiet, and quietly hold on to what mattered - without you ever opening the memory panel.
03
We Swore Off Lorebooks. Then We Built World Books.
Last year we argued lorebooks were a complexity trap — regex triggers, insertion probabilities, a multi-language nightmare most people abandon. We still believe that. So when we built World Books, we kept the one thing worth keeping — giving your characters a world — and threw out the rest. Here's why we changed our build, not our mind.
04
Your Persona is Everything - Why Being Yourself Isn't Always Enough
What if you could be anyone in your conversations? Our user persona system doesn't just help AI remember you - it unlocks infinite ways to explore different versions of yourself and entirely new personas.
05
The Art of Conversation Forking
What if every conversation could branch like a story? Our fork feature isn't just about trying different responses - it's about giving users the freedom to explore infinite possibilities without fear of consequences.
Practice path
Organize what the story needs.
- 01
Separate fact from atmosphere
Save exact names, promises, and rules as durable entries. Let summaries carry softer emotional and narrative texture.
- 02
Scope memory correctly
Choose character-specific or global memory, then use personas and branches to keep unrelated stories isolated.
- 03
Structure world knowledge
Split lore into focused entries with names, aliases, and concise descriptions that can be retrieved independently.
- 04
Audit what the system recalls
Review memories and World Book usage, repair inaccurate entries, and remove information that no longer belongs in the story.
Guide FAQ
Questions about what survives.
What is the difference between AI context and memory?
Context is the information directly shown to the model for the current reply. Memory is durable information selected from older conversations and supplied again when relevant.
What is an AI lorebook or World Book?
It is a structured library of world knowledge—people, places, factions, rules, objects, and history—that a roleplay system retrieves when the current scene relates to it.
Why did my AI character remember the event but forget the wording?
The event likely survived in a rolling summary while the exact message left the live context window. Pin exact wording as a durable memory when precision matters.
Put the guide to work