Best AI Dungeon Model (2026): Which One to Actually Pick
AI Dungeon’s model picker is one of the most intimidating menus in AI roleplay: dozens of names — Muse, Wayfarer, Hearthfire, Madness, Nova, Harbinger, a stack of DeepSeek versions — with almost no explanation of which does what. Most players either stick with the default or pick whatever has the biggest number, and both are mistakes. The model you choose shapes your story more than almost any other setting, and the right one depends entirely on what you want to play.
This guide sorts the 2026 lineup by playstyle so you can pick deliberately. If you’re weighing AI Dungeon as a whole, that’s in our full AI Dungeon review; if you’re wondering what the free tier actually gets you, see is AI Dungeon free. Here, we’re just answering: which model?
How AI Dungeon’s Models Actually Work
A few things worth understanding before the list:
- Most are community-style finetunes, not raw frontier models. AI Dungeon takes open models (Mistral, Llama, Gemma, DeepSeek, GLM) and finetunes them specifically for second-person interactive fiction. That’s why a “12B” here often feels better at roleplay than a much larger general chatbot — it’s purpose-tuned.
- Bigger isn’t automatically better. A 70B model writes with more nuance, but a well-tuned 12B aimed at your exact playstyle frequently gives a better session. Parameter count is not the ranking.
- Tier controls size and context, not just access. Free players get the smaller finetunes; premium tiers unlock the large models and larger context windows (how much of your story the model remembers at once). More on that limit in why AI campaigns fall apart.
- “Dynamic” models auto-switch between several models so you don’t have to choose. Handy for variety; less good if you want a consistent voice.
The single most useful reframe: stop asking “what’s the best model” and start asking “best for what.”
The Quick Answer, by Playstyle
| If your story is about… | Pick (free) | Step up to (premium) |
|---|---|---|
| Characters, relationships, emotion | Muse (12B) | Nova (70B) |
| Combat, danger, harsh consequences | Wayfarer Small 2 (12B) | Wayfarer Large (70B) / Harbinger |
| Cozy, atmospheric slice-of-life | Hearthfire (24B) | Hearthfire / Equinox |
| Dark, chaotic, graphic | Madness (12B) | DeepSeek variants |
| Fast, light, easy prose | Fable (8B) | — |
| “Just choose for me” | Dynamic Small | Dynamic Large / Dynamic DeepSeek |
| Best possible writing | — | DeepSeek V4 Pro |
Everything below is the detail behind that table.
The Free-Tier Models (Where Most People Should Start)
You do not need to pay to get a good AI Dungeon experience. The free finetunes are the game’s real workhorses:
- Muse (12B) — the best free all-rounder. A Mistral-Nemo finetune tuned for character-driven narratives, emotional intelligence, and relationship-focused stories, with training specifically aimed at reducing clichés. If your play is about people — companions, drama, slow-burn relationships — start here.
- Wayfarer Small 2 (12B) — the danger model. Purpose-built for combat, injury, and high-stakes, second-person action in a world that doesn’t hand out plot armour. Players who want their choices to hurt love it. If Muse is a drama, Wayfarer is a survival story.
- Hearthfire (24B) — the cosy one. A Mistral-Small finetune for slice-of-life, atmospheric scenes, and personal (not apocalyptic) stakes. The “lo-fi beats” of AI Dungeon models — low-drama, high-mood.
- Madness (12B) — the wild card. A merge of Mistral NeMo finetunes tuned for dark, chaotic, graphic storytelling and unpredictable plot turns. Reach for it when you want the story to genuinely surprise (and unsettle) you.
- Fable (8B) — the featherweight. A small Llama-3 finetune (Lunaris) that’s fast and pleasant for atmospheric prose. A community favourite when speed and easy vibes matter more than depth.
- DeepSeek V4 Flash — the fast talker. A quick, conversational model that shines in dialogue-heavy scenes; premium players can run it at much larger context.
- Dynamic Small — not a model but a switcher that rotates between free models for variety. Good for new players who don’t want to think about any of this yet.
For most people, Muse or Wayfarer Small 2 is the right first choice — pick by whether your story is about people or peril.
The Premium Step-Ups (When Free Isn’t Enough)
Paid tiers unlock larger models and bigger memory. The ones worth knowing:
- DeepSeek V4 Pro — the headliner. A very large mixture-of-experts model widely regarded as the strongest writer in the lineup — the “blows most others out of the water” tier. If raw prose quality is the goal, this is it.
- Nova (70B) — Muse’s big sibling. A Llama-3.3 finetune for complex, character-focused stories with real emotional depth and nuance.
- Wayfarer Large (70B) — Wayfarer’s big sibling. Consequence-heavy adventure and detailed combat with far more nuance than the 12B.
- Harbinger (24B) — adventure with meaningful stakes and strong Author’s Note handling; a great middle option for consequence-driven play.
- Equinox (31B) — a Gemma-4 finetune tuned for character consistency and second-person continuation, with notably fewer refusals.
- GLM 5.1 / Hermes 3 405B — the coherence and intelligence picks. GLM 5.1 is praised for grounded, stable prose; Hermes 405B is the most “intelligent” but needs careful instruction to stay on the rails.
- Atlas / Raven — experimental, cache-efficient models built for long-form stories with better memory tracking. Worth trying if your campaigns run very long.
You don’t need to learn all of these. The practical premium path: DeepSeek V4 Pro for prose, Nova for character depth, Wayfarer Large for combat, and one of the experimental long-context models if your stories sprawl.
A Word on Settings
The model is the biggest lever, but two settings interact with it:
- Context size — how much of the story the model can “see” at once. Higher tiers grant more, and more is better for long, continuity-heavy play (within the hard limit every model has — see why LLMs forget).
- Response length — longer responses give the model more room to develop a scene, at the cost of pace.
Match these to the model: a large premium model with generous context is built for sprawling epics; a fast free finetune with tighter settings is built for snappy, reactive play.
The Honest Ceiling
Switching models fixes a lot — flat prose, weak combat, too many refusals. What it can’t fix is the thing underneath every AI Dungeon complaint: the model only knows what fits in its context window. Change the model and the world still doesn’t truly persist; a better model just forgets more gracefully. That’s the mechanic behind why your AI campaign falls apart, and no model in the picker escapes it.
If your real frustration is that nothing carries forward — that the world doesn’t remember your choices between sessions — that’s not a model problem, it’s a design one. Platforms like RoleForge store the world in a database instead of the context window (our AI Dungeon alternatives guide maps the options), and the free Arcanum Originals are engineered RPG systems built to hold persistent state on the frontier model you already use. For picking a model outside AI Dungeon entirely, see best LLM for roleplay, and for the budget favourite specifically, DeepSeek for roleplay.
But if you’re staying in AI Dungeon — and it’s still an excellent sandbox — the model picker is no longer a mystery. Choose by playstyle, start free, and pay only when you want a bigger brain and a longer memory.
AI Dungeon’s model roster changes often — models are added, renamed, promoted between tiers, and deprecated. The playstyle guidance here stays true, but always confirm the exact current models, sizes, and tier requirements in the app.
Frequently Asked Questions
What is the best AI Dungeon model? There’s no single best — it depends on your playstyle and your subscription tier. For the strongest writing overall, the top premium model (currently a DeepSeek V4 Pro tier) is the clear leader. On the free tier, Muse is the best all-rounder for character-driven stories and Wayfarer Small 2 is the best for combat and consequences. Pick by what your story is about, not by which model has the biggest number.
What is the best free AI Dungeon model? The standout free models are the in-house finetunes. Muse (12B) is the best free pick for character-driven, emotional, relationship-focused stories. Wayfarer Small 2 (12B) is the best free pick for combat, danger, and harsh consequences. Fable (8B) is a light, fast community favourite for atmospheric prose, and Dynamic Small auto-switches between free models if you just want variety without choosing.
What is the difference between Muse and Wayfarer in AI Dungeon? Muse is tuned for character-driven storytelling — emotional intelligence, relationships, slice-of-life — and uses training techniques to reduce clichés. Wayfarer is tuned for the opposite: combat, injury tracking, high stakes, and a harsh world where failure is real and plot armour doesn’t exist. Choose Muse when your story is about people, and Wayfarer when it’s about danger.
What does Dynamic Small (or Dynamic) mean in AI Dungeon? Dynamic models aren’t a single model — they automatically rotate between several models behind the scenes, so you get variety without picking one yourself. Dynamic Small is the free version aimed at new players; Dynamic Large and Dynamic DeepSeek are premium versions that rotate between higher-tier models. They’re the “just let the app choose” option.
Which AI Dungeon model is best for dark or mature stories? Madness is the in-house model specifically tuned for dark, chaotic, graphic prose and unpredictable plots. More broadly, AI Dungeon’s community finetunes refuse far less than the frontier models’ default behaviour, so dramatic and mature themes run more freely than they would on a mainstream chatbot. Wayfarer also suits grim, high-stakes play, though its focus is danger and consequence rather than tone.
Do I have to pay for the best AI Dungeon models? The very strongest writers — large models like DeepSeek V4 Pro, Nova (70B), and Wayfarer Large (70B) — are premium-tier. But the free finetunes (Muse, Wayfarer Small 2, Fable) are genuinely good, and for most players the free tier is enough to enjoy the game. Paying mainly buys bigger models and more context memory, which matters most for long, complex stories.
AI Dungeon is a product of Latitude and is an independent third party; Arcanum is not affiliated with or endorsed by it. Model names, sizes, and tier availability change frequently — verify current details in the app before relying on them.