Build it by hand
The full builder: appearance, personality, backstory, speech patterns, tags for image generation, chat examples that teach behaviour.
CHARACTER BUILDING
Build AI Characters for Roleplay and Storytelling
Give a character a personality, a backstory and a memory that survives months of conversation. Deluxe chats run on GLM 5.3 — an Opus-class model self-hosted on private clusters — so a kyn can carry a campaign, a relationship, or an argument you started in March.
120K+
AI characters
18.0M
Images generated
2.4M
Scenes played
640K+
Songs & clips rendered
Characters That Evolve Through Interaction
Design AI characters for any scenario—fantasy companions D&D NPCs original story protagonists or custom personalities. Your characters remember interactions adapt behaviors and maintain consistency across unlimited conversations.
Create Character
Sophisticated Memory and Context Systems
Memory architecture preserves character histories across months enabling continuity in campaigns stories or relationships. Characters recall past events, reference shared experiences, and develop naturally over time.
THE MODEL
Two tiers, one honest answer
Character consistency over months is a model problem before it is a writing problem.
Standard chats
Gwem, our fast in-house model: quick, solid, great for everyday roleplay. Messages are unlimited on every paid tier.
Deluxe chats — GLM 5.3
Deluxe runs on GLM 5.3, an Opus-class model — the size class of the biggest frontier assistants. Soulkyn self-hosts a 753B-class frontier model on private clusters, which is exactly why it can be unlimited. Deeper memory, sharper dialogue, characters that keep track of the story.
Deluxe and Deluxe Backer text chat switches to GLM 5.3 automatically — there is nothing to enable. It does not apply to voice calls, which stay on the standard model.
Five ways to get a character
Not everyone wants to fill in a form. Some of these are a form; some are a dice roll.
Describe it
Write what you want in plain text and Create with AI builds the whole thing, with an optional advanced pass for a richer result.
Spin the wheel
A gacha roll for a character you would never have written yourself. Half the good ones start this way.
Breed two of them
Combine two kyns, with mutations. The result is recognisably both of them and nothing like either.
Import one
Bring a character over from another service — or from a single image. Yes, from an image.
Unlimited versions
Every edit makes a version and nothing is lost. Threads pin the version they were started on, and you can move a thread to another one.
Explore Pre-Built AI Characters
Multi-Modal Character Interactions
AI characters generate voice messages and custom images during interactions. Multi-modal capabilities enhance roleplay immersion—hear your character speak, see them react visually.
Characters with Emotional Depth
GLM 5.3 reads emotional context rather than keywords: it catches when you have gone quiet, when a joke was not a joke, when the mood in the room turned. Characters adapt to it instead of replying to the last sentence you typed.
Granular Character Design Tools
Define personality parameters backstories motivations relationships and quirks. Build characters as simple or complex as your scenario requires—from archetypal companions to deeply nuanced individuals.
Uncensored Character Interactions
No content restrictions on character dialogues or scenarios. Adult roleplay mature themes and complex narratives proceed without artificial filters breaking immersion.
Campaign and Story Continuity
Run D&D campaigns write collaborative fiction or develop long-term character relationships. Memory systems ensure NPCs remember player actions story events and relationship developments across unlimited sessions.
Comprehensive Character Configuration
Control every aspect: physical description personality traits speech patterns knowledge domains emotional tendencies and relationship dynamics. Build characters ranging from simple archetypes to psychologically complex individuals.
Private Character Development
Your character creations and interactions remain private. Share characters publicly if desired or keep them personal for solo storytelling roleplay and companionship.
HOW THE MEMORY WORKS
Memory Architecture for Long-Form Storytelling
Proprietary memory systems enable AI characters to maintain coherence across unlimited interactions. Unlike platforms with limited context windows that forget earlier conversations Soulkyn preserves character knowledge and relationship history indefinitely.
Text Embeddings: Mathematical Memory
Each message transforms into a unique "vector" - a mathematical fingerprint capturing meaning. This allows AI to retrieve relevant past conversations, even outside the immediate chat window.
Intelligent Summarization
Alongside recall, the conversation is summarised in a rolling chain: each summary is built on the one before it and the cursor moves forward as you talk. That is how a thread with thousands of messages still knows its own plot without re-reading everything.
User-Edited Memories
Control your AI character's memory through our intuitive interface. Add or edit specific memories with priority integration into the AI's understanding.
Multi-Shot Retrieval
When responses need depth, our AI re-examines past interactions to refine answers. This ensures rich conversations where context and details from your shared history remain present.
AI Character Creation FAQ
What sets Soulkyn's AI characters apart?
Memory that holds, and a model big enough to use it. Deluxe text chats run on GLM 5.3 — an Opus-class model we self-host on private clusters, which is why it can be unlimited — while standard chats use Gwem, our fast in-house model. Underneath both: per-message recall by meaning, rolling chain summaries, memories you can write yourself, unlimited character versions with full history, plus voice, images and video from inside the same thread. And no filter cutting a scene in half.
How detailed can I make my custom AI character?
Soulkyn offers comprehensive character creation. Define physical attributes, personality traits, backstory elements, speech patterns, relationship preferences, and specific scenarios. Our AI adapts to create genuinely unique characters maintaining consistency across interactions.
What happens to my old versions when I edit a character?
Nothing is lost. Versions are unlimited and the full history is kept, so an edit is never destructive. Each thread pins the version it was started on, which means a conversation you like does not change under you when you rewrite the character — and if you want it to, you can move that thread onto a different version deliberately.
Can I create AI characters for specific types of roleplay?
Yes. Soulkyn supports all roleplay types, from adventure and fantasy to romantic and adult scenarios. Our platform maintains character consistency during complex narratives, adapts to evolving storylines, and provides immersive experiences across genres.
Do AI characters remember previous conversations?
Absolutely. Soulkyn AI characters feature memory systems retaining information from your entire relationship history. They remember personal details you've shared, previous storylines, relationship developments, and preferences. This creates continuous experiences where characters evolve and grow through interactions.
Can I reuse a mechanic across different characters?
That is what a .dll is for. It is a behavioural mod — a rule set, a mechanic, a way of speaking — that attaches to any kyn from a thread's Context tab without altering that kyn. A .wrl does the same for a world. Build a system once, drop it onto somebody else's character, share it. Nothing else in this space has a modding layer like it.
Keep exploring
Build one that lasts
Whether you are writing NPCs for a campaign, a cast for collaborative fiction, or one character you talk to every day, what matters is that they stay themselves. Memory that holds, versions that never overwrite each other, and a model that is actually big enough to use both.
18+ only. No card required to start. Every scene is fiction, between fictional adults, and stays private to your account.
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