Benchmarks
same engine,
same scores.
meisan runs on c137's memory engine — the numbers are theirs.
Benchmarks
meisan runs on c137's memory engine — the numbers are theirs.
Same engine underneath. Pick the mode that fits the moment — meisan keeps everything in scope, no cross-contamination.
First-person chat. Quick replies, real conversation. Build a character once, then let meisan grow the friendship — every message remembered, no resets.
First-person roleplay. The AI plays your character and the world around you. Per-chat memory keeps every roleplay its own world — no cross-contamination.
Third-person prose. World bible, character roster, manuscript-style writing. Facts compress per topic so the world holds together across the whole story.
A library of companions, scenarios and story worlds — written to feel real from the first message. Pick one and start, no setup.


























































































Not seeing them? Make your own — start from a blank slate, or just describe them in a sentence and meisan builds the rest.
Create a character →Every feature, every plan. Upgrade when you need more.
Everything you need
For regular use
Everything you need to know about meisan.
Three things: real persistent memory that actually keeps your character and story building over time, the necessary content filters kept minimal so they don't get in the way of the experience, and optional self-set usage controls so you can pace yourself if you want to — fully off by default.
Yes. Every chat has a memory panel — open it any time to see what's been learned, lock canonical facts so the model can't drift, edit characters and world details, or wipe a memory line you don't want kept.
Yes. Start a new chat, pick Import, choose the mode (chat / roleplay / story), copy the prompt into your Character.AI, Janitor, Chai, or SillyTavern chat, and paste the response back. meisan brings the character, scenario, world and cast across. Your conversation history stays in the source app — what you get here is a fresh chat with the same character and real memory underneath.
Yes. Every new account gets 1,000 free credits — no card required. Credits scale by model size; cheaper models use less, larger ones use more. Subscribe when you run out.
Included models cover small, mid, and large — Rocinante 12B, UnslopNemo 12B, Cydonia 24B, Skyfall 36B, Euryale 70B, plus GLM 4.7 Flash, DeepSeek V4 Flash, Grok 4.1 Fast, and Gemini 3 Flash. Bring your own OpenRouter key to use any other model — Claude, GPT-5, Llama, anything OpenRouter supports.
Your conversations stay in your account — never used to train meisan or any model, deletable any time, exportable from settings. To generate replies, messages do pass through third-party model providers (OpenRouter and the underlying labs); meisan stores nothing those providers don't already see, and their retention is governed by their own policies.