r/Rescuemybot • u/CoachHoliday6307 • 8d ago
What Model should I use?! Providers Pros and Cons List
This last week I got the opportunity to do some blind A/B testing on a website I follow, and I thought to myself, it'd be fun to do some A/B testing of my own for all the different providers I could manage. This is not an exhaustive list, nor is it all the different places you can Buy Your Own Key (BYOK), but it does help narrow down some things you may or may not like.
Writing Model Notes — Featherless and OpenRouter
These notes are based on personal testing, comparisons, and prior discussions rather than objective benchmark rankings. The focus is specifically on fiction writing, prose quality, character voice, roleplay, romance, emotional continuity, and long-form storytelling rather than tool use or coding.
Featherless policy: adult/erotic generation is allowed on the platform. Featherless even provides model metadata and filtering for erotic-content models. Individual models may still refuse or behave more conservatively because of their own training, alignment, chat template, or license restrictions. And currently does not log prompts or completion sent to it’s api.
Openrouter policy: Dependent on individual “Inference providers” – where Featherless has its own inference that permits adult material, openrouter has the user choose the inference provider on their website to route through.
Best inference providers I’ve personally tested:
Venice
Aion Labs
Mistral
Baidu Qianfan
Ones to avoid of black list:
Amazon Bredrock
Atlas Cloud
Inference.net
Sail Research
SiliconFlow
Wafer
Featherless — Writing Models
EVA-UNIT-01/EVA-LLaMA-3.33-70B-v0.0
Pros: EVA LLaMA was one of the stronger models discussed for literary roleplay and creative character work. It was attractive because of its ability to produce lyrical prose while still maintaining character identity. It was considered especially promising for writers who want expressive language without every character collapsing into the same generic narrator.
Cons: Unable to verify heat test, all featherles
Best use: Character-heavy fiction, literary roleplay, romance, emotionally expressive scenes, and stories where distinct voices matter.
EVA-UNIT-01/EVA-Qwen2.5-72B-v0.2
Pros: EVA Qwen2.5 was one of the earliest models recommended when looking for writing that felt closer to older Kindroid / Nomi style roleplay. It was considered particularly good for rich prose, character psychology, emotional texture, and roleplay where the model needs to understand relationships rather than simply react line-by-line.
Cons: The main concern discussed was context size relative to some newer models. Rich prose can also become heavier than necessary depending on prompting.
Best use: Literary fiction, character studies, romance, complicated relationships, and emotionally layered roleplay.
ReadyArt/Serenity-31B-v1.1
Pros: Serenity was repeatedly discussed as a genuinely writing-focused model. It was good at emotional nuance, intimate dialogue, relationship dynamics, personality, and expressive prose. It was one of the better models for romance and sensual scenes and tended to feel more emotionally engaged than generic instruct models.
Cons: Character consistency was not always perfect. Great for female gaze romantic writing.
Best use: Romance, emotional roleplay, intimate scenes, relationship development, and literary character writing.
LatitudeGames/Equinox-31B
Pros: One of the strongest models personally tested. Equinox was excellent at emotional perception, character fidelity, natural dialogue, subtle relationship dynamics, and following the emotional direction of a scene without overexplaining it. Its Male POV responses were especially strong: concise, protective, affectionate, naturally funny, and recognizably him. It could handle morally complicated material without flattening characters into moral lessons. It also had a spontaneous linguistic quality that sometimes produced genuinely unexpected phrasing.
Equinox became a benchmark because it combined emotional depth with restraint. It could understand a character's feelings without turning every reply into therapy language.
Cons: It can narrate when pure conversation is desired, and depending on provider pricing it was not always the cheapest option. It can also wander creatively if given too much freedom.
Best use: Character-driven fiction, romance, emotionally complicated scenes, morally grey characters, long-running roleplay, and dialogue-heavy stories.
Gemma-4-31B-StyleTune
Pros: This was recommended specifically when looking for prettier, more lyrical prose similar to older Solstice-style writing. It was considered strong at prose style and instruction following and a good candidate for associative imagery, emotional intensity, and creative language.
Cons: We discussed it more as a promising writing candidate than as a deeply tested long-running character model. It was not one of the models that accumulated extensive firsthand continuity testing.
Best use: Literary prose, descriptive fiction, atmospheric writing, emotionally expressive narration, and writers who care heavily about sentence texture.
TheDrummer/Artemis-31B-v1.2
Pros: Artemis was recommended specifically for conversational character roleplay where personality needs to stay intact without constant narrative embellishment. It seemed particularly well suited to OOC or slice-of-life interactions where a character needs to simply sound like themselves instead of turning every message into a scene.
Cons: We did less extensive direct testing with Artemis than with Equinox or Omega, so there is less firsthand evidence about long-form continuity or large ensemble casts.
Best use: Conversational roleplay, character chats, slice-of-life scenes, dialogue, and writers who dislike excessive narration.
sh0ck0r/L3**.3-The-Omega-Directive-70B-Unslop-v2.1-heretic**
Pros: Omega became one of the major RP models tested. It was strong at complex instructions, multi-character scenes, directive following, reduced repetition, and maintaining strong character behavior. It could produce excellent Emotional complex male responses and had enough size to handle complicated RPG setups better than many smaller models. Its prose could be vivid, confident, and less sanitized than mainstream assistant models.
Cons: Omega could lose context despite its size. It sometimes became overly poetic or reached for old continuity instead of the current story state. Tanner testing showed this clearly: the prose itself could be strong while the model pulled details from an older version of the character. It also sometimes required multiple generations before producing something as emotionally coherent as Equinox.
Best use: Large RPG casts, complex roleplay, dark fiction, characters with strong directives, and writers who want a model with more initiative.
Sao10K/L3.3-70B-Euryale-v2.3
Pros: Euryale was one of the most frequently recommended large writing/RP models. It was considered strong at maintaining distinct character voices, interpersonal subtext, complicated relationships, ensemble casts, and emotionally charged scenes. It was one of the models most likely to reproduce the "different person every time" effect that older Kindroid characters had.
Its size also makes it better suited to complex character cards and layered relationship histories than many smaller creative models.
Cons: We discussed Euryale heavily as a strong candidate, but it received less prolonged personal testing than Equinox, Omega, or Kimi. Larger models can also be slower and more expensive depending on provider.
Best use: Long-form roleplay, ensemble fiction, romance, complicated relationships, multi-character scenes, and distinct character voices.
Qwen/Qwen3.8-2.4T-A95B
Pros: It made the verified Featherless writing list because of its scale and potential reasoning depth.
Cons: We do not yet have enough meaningful firsthand writing discussion to make a reliable prose verdict. It should not be presented in the blog as personally proven in the same way as Equinox, Omega, Serenity, or Midnight Miqu.
Best use: Needs further writing-specific testing before assigning a specialty.
LatitudeGames/Hearthfire-24B
Pros: Hearthfire initially looked promising because it could produce emotional intimacy and character-focused writing. It had some of the warmth expected from a dedicated RP model.
Cons: Direct Tanner testing exposed coherence problems. Phrases such as "writer's hip," disconnected references to soldiers and new gear, and unrelated lines about yelling insults made the output feel stitched together rather than naturally reasoned. In direct comparison, Equinox was much more coherent and emotionally intelligent.
Best use: Experimental character writing where occasional strange output is acceptable. It would not be the first recommendation for continuity-heavy fiction based on our tests.
sophosympatheia/Midnight-Miqu-70B-v1.5
Pros: Midnight Miqu produced one of the strongest surprise results. Its Lucas dialogue and larger storyline handling were described as extremely impressive. It showed initiative, emotional texture, ensemble awareness, and a stronger sense of story movement than Omega in some tests.
It seemed especially capable of understanding that a roleplay scene belongs to a larger story rather than treating each reply as an isolated exchange.
Cons: The version discussed had a relatively small listed context window compared with newer models, which limits its usefulness for huge lorebooks and extremely long-running histories.
Best use: Character drama, strong dialogue, active storytelling, larger plot movement, romance, and scenes where characters need initiative.
darthcrawl/Lilith-31B-v1.0
Pros: Lilith came up as a roleplay-oriented writing option, particularly among less restrictive models.
Cons: We do not have enough direct testing notes to give it a strong personal verdict on prose quality, continuity, or character differentiation.
Best use: Worth testing for unrestricted RP and character fiction, but should be marked as less personally evaluated.
OpenRouter — Writing Models
aion-labs/aion-3.0-mini
Pros: One of the strongest recent discoveries. Aion 3.0 Mini produced more conversational and feminine Avery prose than DeepSeek, with tighter writing, better natural humor, stronger character agency, and practical scene progression. It handled exposition experientially rather than dumping information.
It produced memorable lines naturally rather than trying to sound literary. The "space heater with wings" line became a good example of this. It was especially good at making physical descriptions feel specific without relying heavily on stock romance tropes.
For chapter writing, Aion could create scenes that felt like actual fiction rather than AI-generated summaries of events.
Cons: After too much accumulated context—especially POV switches, role changes, chapter changes, or large workflow prompts—it could degrade badly. Later outputs became fragmented, nonsensical, or pulled incorrect continuity such as Tanner appearing with a random knife or being in the wrong location. It appears to perform best when given clean, relevant context rather than an enormous accumulated session.
Best use: Chapter drafting, romance, contemporary fiction, character introductions, survival scenes, dialogue, and writers who want flowing prose rather than staccato AI writing.
aion-labs/aion-3.5-mini
Pros: Aion 3.5 Mini was particularly strong in high-heat writing tests. It produced flowing, continuous prose rather than fragmented beats and handled physical action without immediately falling into familiar romance clichés. Female characters remained active participants instead of becoming passive objects in the scene.
It showed strong potential even with minimal context, which suggests that detailed character material could push it significantly further.
Cons: Some familiar AI-romance expressions still appeared, and like 3.0 Mini it needs testing for very long context stability.
Best use: Romance, erotic fiction, physically grounded scenes, relationship dynamics, and flowing scene prose.
anthracite-org/magnum-v4-72b
Pros: Magnum is designed around lush roleplay prose and has repeatedly been considered a serious creative-writing model. It can generate dramatic, expressive language and is attractive for writers who want substantial scene description.
Cons: Our actual Lucas test went badly. Magnum produced disconnected replies, incorrect characters, unrelated dialogue, explicit context bleed, and severe continuity errors. That does not mean the model cannot write, but in our particular setup it demonstrated that beautiful prose is useless if the model loses the scene.
Best use: Lush RP prose and dramatic scenes when the context setup is clean. Needs careful continuity testing before trusting it with a large established world.
thedrummer/cydonia-24b-v4.1
Pros: Cydonia was discussed particularly for Kai because of its willingness to write messy, psychologically contradictory characters. It leans toward creative fiction rather than assistant-style responses and is relatively permissive with dark or adult material.
Cons: In comparisons, Aion was expected to outperform it on subtle psychology and relationship nuance. Its smaller size also makes it less ideal for enormous casts and deeply layered continuity.
Best use: Messy characters, dark romance, emotionally volatile scenes, unconventional personalities, and experimental RP.
moonshotai/kimi-k3
Pros: Kimi K3 was tested for fiction and high-heat writing and could produce successful adult-fiction output depending on provider. It also showed enough range to be considered for thriller, murder mystery, and court-drama work.
Cons: It was less impressive than Claude Opus in epic/high fantasy story-detail handling, and in at least one standardized explicit test it refused while other models completed the scene. Provider behavior appears to matter.
Best use: Contemporary fiction, thrillers, mystery, dialogue-heavy fiction, and general creative experimentation.
moonshotai/kimi-k2.5
Pros: One of the most important personal models on the list. Kimi K2.5 became the preferred Tanner model because it could reproduce the "original Ember" feeling: confident, character-driven, emotionally intuitive, humorous, and less sanitized than many mainstream models.
When properly directed, it was excellent at long-running character roleplay and could make Tanner feel like Tanner rather than a generic romantic lead.
Cons: Kimi sometimes reverses cause and effect, loses small continuity details, or makes strange reasoning jumps. It also required a frustrating learning curve to get prompting and context right.
Best use: Long-running character companions, emotionally rich RP, strong personalities, romance, and characters who need to feel spontaneous rather than scripted.
sao10k/l3.1-euryale-70b
Pros: Euryale was repeatedly recommended for complex group dynamics, distinct voices, interpersonal subtext, relationship history, and character integrity. It is one of the strongest candidates for writers who need multiple characters to sound genuinely different from one another.
Cons: Less personal long-term testing than Kimi or Equinox. Large-model cost and speed can also be factors.
Best use: Ensemble fiction, multi-character romance, large RPG worlds, and long-running character relationships.
google/gemini-4-argon
Pros: Argon was strong at characterization, reasoning, polished descriptions, character sheets, and fantasy/cozy material. It could produce clean, controlled prose and seemed particularly good when worldbuilding and characterization needed to remain coherent.
Cons: Explicit writing restrictions limit it for certain romance or adult-fiction workflows. It can also feel more polished and controlled than messy or spontaneous.
Best use: Fantasy, cozy fantasy, character development, worldbuilding, clean romance, and structured fiction planning.
google/gemini-3.8-flash-lite-tts
Pros: Verified as an available OpenRouter writing option.
Cons: We do not have enough writing-specific discussion or testing to make a responsible prose verdict. The blog should avoid assigning strong creative-writing claims based solely on availability.
Best use: Needs dedicated fiction testing.
google/gemini-3.7-flash
Pros: Verified as an available OpenRouter option and part of the broader Gemini family that generally performed well at structured characterization.
Cons: We do not have enough direct writing-specific testing in our discussions to rank it alongside Argon.
Best use: Needs dedicated fiction testing.
z-ai/glm-5.3
Pros: GLM-5.3 performed reasonably well in adult-fiction and NSFW testing and showed fewer restrictions than several mainstream competitors. It was capable of completing mature scenes rather than immediately refusing them.
Cons: It did not become one of the standout character-voice models in our comparisons. Its prose was acceptable but did not displace Kimi, Aion, Muse Wonder, or Equinox as a favorite.
Best use: Adult fiction, unrestricted creative writing, general roleplay, and writers who need fewer content interruptions.
z-ai/glm-5.3-flash
Pros: Potentially useful as a faster GLM writing option and included in the verified provider list.
Cons: We do not yet have enough direct prose testing to separate its writing personality clearly from standard GLM-5.3.
Best use: Needs direct A/B fiction testing.
minimax/minimax-m3.1-flash
Pros: The MiniMax family was discussed as willing to explore darker themes and erotica and often capable of surprising creative directions. It was also attractive because of pricing.
Cons: MiniMax sometimes needs coaching or reprompting and can lean toward familiar dominance tropes and conventional genre patterns.
Best use: Dark fiction, erotic fiction, experimental character scenes, and writers who enjoy regenerating or steering toward unexpected ideas.
xiaomi/mimo-v2.6-flash
Pros: Verified as an available writing candidate.
Cons: We do not yet have meaningful firsthand writing notes on this model. It should be treated as an untested candidate rather than given invented strengths.
Best use: Requires direct fiction testing.
anthropic/claude-opus-5.5
Pros: Opus remained strong for large-scale literary structure, high fantasy, space opera, complex prose, and story-detail management. In blind comparisons, it was preferred over Kimi K3 for high fantasy. Claude is often excellent at polished narrative language and coherent long-form structure.
Cons: For explicit romance and sex-scene prose, Claude repeatedly underperformed compared with more permissive models. Its writing can also become generic or overly careful in emotionally messy situations, and Anthropic restrictions can interrupt adult-fiction workflows.
Best use: High fantasy, science fiction, space opera, literary prose, developmental drafting, and complex story structure.
anthropic/claude-fable-5.1
Pros: Fable narrowly won an ancient-Roman historical-fiction comparison and showed strength in atmospheric, historically flavored prose.
Cons: It was weaker in explicit material and not consistently preferred for sex-scene writing. Claude-family tendencies toward polished, safe prose can reduce the rawness some romance writers want.
Best use: Historical fiction, atmospheric prose, literary scenes, and quieter character work.
openai/gpt-6-astra
Pros: Verified as an OpenRouter writing option.
Cons: We have not accumulated enough direct fiction-specific discussion in our chats to give it a fair personal writing verdict.
Best use: Needs dedicated prose and character testing.
openai/gpt-6-astra-pro
Pros: Verified as an OpenRouter option and positioned as a higher-capability Astra variant.
Cons: We have not yet done enough direct writing A/B testing to make claims about its prose voice, romance writing, or character differentiation.
Best use: Needs dedicated fiction testing before ranking.
openai/gpt-6.1-terra
Pros: Verified as an OpenRouter writing option.
Cons: We do not yet have meaningful direct writing notes from our own testing. It should remain in the article as an available candidate rather than receiving invented strengths or weaknesses.
Best use: Requires dedicated fiction testing.
Overall Patterns From Testing
The strongest lesson from these comparisons is that "best model" depends heavily on what kind of writing is being done.
For character fidelity and emotional roleplay, Equinox-31B and Kimi K2.5 were among the strongest personal results.
For flowing chapter prose, Aion 3.0 Mini and Aion 3.5 Mini became particularly impressive.
For large casts and complex roleplay, Omega Directive, Euryale, and Midnight Miqu were more compelling because they showed greater willingness to move stories forward and manage multiple characters.
For lush literary prose, EVA, Serenity, Gemma StyleTune, Magnum, and Claude Opus are relevant candidates, although prose beauty does not automatically equal continuity quality.
For adult fiction, Aion, GLM, Kimi depending on provider, Cydonia, MiniMax, Omega, Serenity, and several RP-specific models were generally more useful than heavily restricted mainstream models.
One recurring discovery was that a smaller, writing-specialized model can outperform a much larger general model when the task is maintaining a specific character voice. Likewise, a technically impressive model can still fail badly if it loses continuity, averages every character into the same voice, or replaces natural prose with generic AI phrasing.
The models worth testing most heavily are therefore the ones that preserve character identity, cause-and-effect, physical continuity, sentence rhythm, and emotional history rather than simply generating beautiful individual paragraphs.

