Welcome to the world of open-source erotic role-play AIs.
Mainstream chatbots such as ChatGPT, Claude, Replika, or Character quickly showed their limits for anyone seeking intimacy beyond polite conversation. Strict filters either block explicit content or flatten steamy dialogue into sterile text. When Replika removed erotic features in 2023, thousands of users felt abandoned, sparking a wave of frustration and creativity.
The good news is that a whole ecosystem of unrestricted, open-source language models has sprung up for us erotica lovers.
Hobbyists and enthusiasts began building uncensored language models designed for erotica and kink-friendly role-play. Early projects like Pygmalion 6B proved that it was possible to enjoy AI companions without corporate restrictions, opening the door to a growing ecosystem of models tuned for literotica and fetish play.
These models can be run locally for full privacy or accessed through third-party platforms for convenience.
Let's explore what different model sizes offer (7B, 13B, and larger), how they compare to mainstream giants, factors that determine the quality of erotic chat, and practical options for running them at home or online.
For anyone tired of filters and craving unfiltered intimacy, the open-source scene has plenty to offer.
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How Model Size Affects Performance in Erotic Role-Play?
When it comes to LLMs, the easiest way to estimate their capacity is to check how many parameters they have, since this roughly correlates with their quality.
The “B” that you'll often see next to these open source LLM names means billion parameters, which refers to the size of a model’s neural network “brain.” Generally, the more parameters a model has, the better it handles memory, context, and writing quality.
Most open NSFW models today are based on Meta’s LLaMA family or similar architectures, and they come in sizes such as 7B, 13B, 30B, and 70B. For comparison, ChatGPT’s GPT-3.5 uses about 175B parameters, while GPT-4 is believed to be hundreds of billions more.
As you can see, mainstream models have immense power, but they also come with strict restriction filters. The good news is that the fine-tuned 13B model can outperform even flagship models if it's fine-tuned for specific tasks.
Smaller uncensored models can be trained to go where the big ones will not, and if trained on appropriate data, such as literotica novels, they can provide a far superior and more immersive erotic chatting experience.
7B models
7B is the entry point. They can run on modest hardware, respond quickly, and cost very little to host. The writing is usually simple and can get repetitive, but newer releases like Mistral-7B have shown surprising strength and can already outperform older 13B models in many tasks. With the right fine-tuning, even a small 7B can produce fluid and bold NSFW chats.
13B models
13B is often considered the sweet spot. They have enough scale to produce immersive dialogue, remember preferences, and carry roleplay through multiple scenes without losing track. The descriptions are richer, the teasing feels more natural, and the overall flow is far closer to what people expect from a true AI companion. For many users, 13B is the minimum size that delivers a fully engaging erotic experience.
30B to 35B models
Models valued between 30B and 35B take things even further. These models generate text with more detail, longer passages, and better consistency over time. They are capable of sustaining complex roleplays, weaving in fetish-specific language, and maintaining character depth. Running them requires more powerful hardware and some patience, since replies can take longer, but the quality makes them feel like you are interacting with a genuinely skilled erotic storyteller.
70B+ models
Models that have 70B or more parameters are the upper tier of what most people can realistically access. When properly tuned, they produce writing that rivals ChatGPT in fluency and emotional nuance but without the corporate restrictions. They handle longer context, deliver more believable personalities, and respond with fewer mistakes.
The trade-off is that they demand extremely powerful GPUs or cloud hosting, but those who make the investment often describe the quality as indistinguishable from a human erotica author.
Then you also have frontier models such as DeepSeek V3 and WizardLM-2, which push the boundaries even further. DeepSeek V3 uses a mixture-of-experts system with 671B parameters, though only about 37B are active at any given time, while WizardLM-2 combines multiple experts to reach an effective 141B.
These giants approach GPT-4 levels of reasoning and coherence, which makes them fascinating for erotic storytelling. The downside is that they are difficult to run, requiring enterprise-level hardware or specialized inference setups, and some still come with partial alignment filters. Even so, they represent the cutting edge of the community’s drive for both intimacy and independence.
If you want easy access to DeepSeek V3, you can start chatting immediately here!
What Makes a Great Erotic Chatbot?
When it comes to erotic roleplay, the size of LLM is a solid indicator of chat quality, but it's not the only one. What also matters is how it is tuned, how it remembers details, and whether it can follow the user’s lead without hesitation. These are the main qualities that make an NSFW model stand out:
Training and Fine-Tuning The biggest factor is what the model was trained on. A base model exposed only to safe or sanitized text often becomes awkward, shy, or outright refuses. Fine-tuned NSFW models, on the other hand, have been fed erotica, roleplay logs, and explicit stories, so they understand the language, the pacing, and the emotional build-up.
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They do not fade to black, and they do not scold. Classics like Pygmalion set the tone for the community, and today there are dozens of uncensored fine-tunes such as MythoMax, Erebus, Midnight Mistral, and Hermes that fully embrace roleplay without hesitation.
Coherence and Memory Immersion breaks quickly if an AI forgets a name or shifts the setting mid-scene. Smaller models often stumble here, while 13B and above usually keep track across multiple turns.
Larger ones, such as 30B or 70B, handle longer storylines with consistency, remembering callbacks and sustaining atmosphere. Newer giants like DeepSeek V3 even support novel-length context windows, which means they can keep entire story arcs in memory rather than resetting every few exchanges.
MyBunny supports a 5000-character customization window and the largest open source LLM DeepSeek V3 that can use all the tiny details you input and work them into fantasy.
Freedom from Filters Censorship ruins the mood. Some models are polished but still sanitize explicit content, which breaks immersion. The most beloved NSFW models are those that indulge any fantasy presented to them, whether tender romance or filthy degradation, without pulling away.
Style and Personality Every model has a distinct flavor. Some narrate with poetic romance, others with harsh dominance, and some with the bluntness of a porn script. The best experiences come from selecting a model whose natural style aligns with the intended kink or mood.
If affectionate storytelling is the goal, choose a model tuned for romance. If sadistic horror-erotica is preferred, a darker fine-tune like Fallen Gemma is a better fit. The closer the model’s style matches personal taste, the less prompting is required to keep it in character.
Responsiveness Good erotic roleplay is a dialogue. A quality model listens, adapts, and follows instructions faithfully. If stockings are requested, they appear. If the setting shifts mid-scene from bedroom to dungeon, the model adjusts seamlessly. Some models are rigid or forgetful, others are playful and flexible. The latter creates the sense of a partner who is truly attentive.
Support for Kinks Most uncensored models handle common themes such as BDSM, threesomes, and roleplay tropes. For unusual fetishes, specialist fine-tunes or LoRA add-ons shine. These are trained on narrower datasets like femdom-only erotica or furry material, which makes the output feel natural rather than clumsy. A general model can attempt the scene, but a kink-tuned one delivers it with authenticity.
The combination of these qualities creates the ideal experience: a model that remembers the story, adapts to changes, indulges kinks without hesitation, and tells the tale with both heat and emotional weight. That is what makes an AI feel less like a chatbot and more like a true erotic companion.
The All-Star Lineup of Uncensored Open-Source LLMs
By 2025, we will have several standout models that are widely used for various chatbot platforms and solo users looking for kink-friendly LLMs in the NSFW roleplay scene. These are the names that keep coming up in forums, SillyTavern chats, and AI girlfriend platforms.
Some can run on a decent home PC, others thrive in community hubs, and a few are simply too huge to run locally, available only through hosted services. Together, they form the all-star lineup of uncensored LLMs powering kinks, taboos, and immersive sexting today.
If you prefer a plug-and-play experience with maximum realism, you can jump straight into the platforms that integrate massive hosted models, providing fluid prose and deep immersion with almost no setup.
Entry Level: Quick and Dirty (7B–12B)
If all you’ve got is a laptop with integrated graphics or a mid-range GPU with 6–8 GB VRAM, start here.
Mistral-7B (Raw/Uncensored) – This one shocked the scene because of how uncensored it came out of the box. Runs smoothly on practically anything and spits out raunchy text without hesitation. Don’t expect deep memory or flow, but with clever fine-tunes (like Dolphin or Undi-RP), it can act bold and emotional. Think “one-night stand” quality: fast, dirty, repeatable.
Pygmalion 2 (7B & 13B) – The OG roleplay model. Built on RP logs, it feels like chatting with someone who wants to play the part. 7B is light and chatty, 13B is heavier but still runs on a single decent GPU. Great for in-character banter and casual sexting, though the narrative can be flat compared to newer merges.
Violet Lotus 12B – If you’re into romance RP, this one’s got high EQ. It reacts to emotional cues better than most in its class and can sustain a long, heartfelt build-up. Runs fine on 8–10 GB VRAM with quantization.
Entry-level models shine when fine-tuned on a specific kink or dataset. A 13B trained only on femdom erotica, for instance, will outperform a 70B generalist in delivering the exact tone and pacing you want. They’re the most “goon-friendly” for custom work.
Mid Range: The Sweet Spot (13B–30B)
With a gaming PC and at least 12 GB VRAM, this is where things get real.
MythoMax-13B – The community darling. Balanced, vivid, and endlessly steerable. When fine-tuned on literotica, it writes like a mini-novelist, with detailed sensory buildup and steady immersion. Arguably the best “all-rounder” for those who don’t want to wrestle with massive hardware.
Tiefighter-13B – Infamous in the scene. It knows anatomy frighteningly well and leans darker by default. If you want gore, drugs, or taboo stuff, it goes there without blinking. A kink-tuned Tiefighter will eat ChatGPT-3.5 alive in raw erotic detail.
Chronos-Hermes 13B – Designed for long RP threads, and it shows. It won’t lose the plot mid-session. Great for sprawling BDSM campaigns or fantasy arcs where consistency matters as much as heat.
Mistral-Nemo 12B & Mistral 24B Uncensored – Nemo is small but surprisingly coherent over long scenes, while the 24B “decensored” variants bring richer detail. Both are fast, reliable, and good at following instructions without breaking immersion.
Mid-range is the playground of fetish fine-tuning. Train one of these on a set of taboo erotica novels, and it will develop a voice, whether that’s a cruel domme, a needy sub, or a poetic romantic. This is where models stop feeling like toys and start feeling like custom-built AI lovers.
High End: Monster Lovers (70B and Beyond)
Now we’re in server-grade territory. Running these locally means 30–40 GB VRAM minimum (dual GPUs or an A100). For most people, the only realistic access is through platforms like OpenRouter, JanitorAI, or AI girlfriend apps.
Nous Hermes 3 (70B) – The most versatile 70B for RP. It blends raw IQ with erotic willingness. Handles multi-character orgies, slow-burn romances, or surreal kinks with equal grace. If you can afford the VRAM, it’s almost ChatGPT-level—minus the prudishness.
Midnight Mistral 70B – A softer touch. Writes explicit content beautifully, but sometimes veers into wholesome territory. Perfect for those who want sex with a side of affection.
Fallen Gemma 27B – Evil-tuned, cruel, and sadistic. If your thing is humiliation or dark fantasies, this is the best mid-to-high-end choice.
WizardLM 2 (70B and 8×22B MoE) – Technically superb, verbose, and relentless. Amazing for long smutty novellas, though dialogue can feel stiff. Realistically, only accessible via the cloud.
DeepSeek V3 (671B MoE) – The holy grail for many. It has insane reasoning, a 128k context window, and can literally carry a novel-length roleplay without losing track. Nobody sane runs this at home. On hosted platforms, though, it’s the closest thing to a fully human erotica partner.
High-end models excel at immersion and consistency, but they aren’t always the best at raw filth. A smaller kink-tuned 13B can actually feel nastier, dirtier, and more personal. The monsters bring polish, depth, and endless memory, but the little guys bring edge. The smartest gooners swap between both, mixing the brute force of 70B for long plots with the raw kink-specialist 13B for the climax.
MyBunny.ai offers the option to seamlessly switch between the best available LLMs, even mid-conversation, so you can enjoy the best each has to offer.
The Future of Uncensored LLMs
Exploring uncensored LLMs for erotic roleplay in 2025 really is like walking into a candy store of fantasies. From flirty little 7B models that can run on a laptop, to 70B+ giants that weave near-human prose on cloud servers, the options are endless.
The best part is the freedom: whether you’re after tender romance, shameless filth, or a very specific kink, there’s a model (or fine-tune) out there that will indulge it without hesitation.
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Community wisdom is priceless here. Discord servers like SillyTavern or subreddits like r/AIErotica are full of enthusiasts sharing model reviews, prompts, and tricks to push immersion further. Some even trade their own fine-tunes, whether it’s a femdom specialist, a fluffy romance bot, or something far darker. And don’t underestimate tinkering. A little prompt engineering, regenerating lines until they flow, or layering a kink-specific LoRA can turn an average model into something unforgettable.
Looking ahead, the future of uncensored LLMs is only getting brighter. The open-source scene moves fast, with new merges, fine-tunes, and monster MoEs dropping every few months. Today’s 13B kink-tune might outshine yesterday’s 70B, and tomorrow’s frontier models will push immersion even closer to reality.
At the end of the day, these AIs are tools, but they’re also partners in imagination, actors ready to play any role you can dream up.
So dive in, experiment, and enjoy the ride. Whether it’s a playful chat on your phone or an epic roleplay powered by a server-grade beast, this field is thriving, and the perfect AI companion is already waiting for you.
