28 canonical universes — from Star Wars to Sherlock Holmes — with canon-aware AI that knows the lore, the characters, and the rules. 6 divergence types. Canon-compliant or AU. Your story in their world.
Free plan available · No credit card required
The tools you've been using weren't built for this. Here's why it matters.
Ask ChatGPT to write a Harry Potter fanfic and you get the setting right but the characters wrong. Hermione sounds like a generic smart person. Snape sounds like a generic villain. The magic is gone.
Canon-compliant, AU, fix-it fic, what-if, crossover, canonverse — each has its own rules and reader expectations. Generic AI can't help you navigate which type you're writing or why.
In fan fiction, getting the lore wrong isn't just a mistake — it's a trust violation. Readers notice. The AI needs to know the universe as well as the fans do.
Every tool in Auctore was designed knowing exactly what this format demands.
Harry Potter, Star Wars, Marvel, DC, Tolkien, Star Trek, Doctor Who, Sherlock Holmes, Game of Thrones, Naruto, One Piece, and 17 more — with built-in lore data.
Canon-compliant, AU (Alternate Universe), fix-it fic, what-if, crossover, and canonverse — each with its own wizard path and structural logic.
Pre-loaded character profiles for major canon characters — voice, motivation, relationships, speech patterns — so your AI-generated dialogue sounds right.
Create original characters that live within the canonical universe — with backstory, faction alignment, and relationships to canon characters built in.
The fan fiction wizard walks you through 10 steps — universe, divergence type, canon characters, OC creation, story type, and premise — so your AI has the same foundation a deep-reading fan would.
Compared to the tools writers in this space actually use — and pay for.
| Feature | Auctore | NovelAI ($15/mo) | SudoWrite ($19/mo) | AO3 (publish only) | ChatGPT (generic) |
|---|---|---|---|---|---|
| Canon Universe DataPre-loaded lore per universe | ✅ | ❌ | ❌ | ❌ | ❌ |
| 28 UniversesSpecific universe knowledge | ✅ | ❌ | ❌ | ❌ | ❌ |
| 6 Divergence TypesAU, fix-it, what-if, crossover… | ✅ | ❌ | ❌ | ❌ | ❌ |
| Canon Character ProfilesPre-loaded voice and motivation | ✅ | ❌ | ❌ | ❌ | ❌ |
| AI Writing QualityStory generation capability | ✅ | ✅ | ✅ | ❌ | Partial |
| Free PlanNo card required | ✅ | Trial | ❌ | ✅ | ✅ |
| TrilingualEN / PT-BR / ES | ✅ | ❌ | ❌ | ❌ | Partial |
| PriceStarting cost | Free / $12/mo | $15/mo | $19/mo | Free (no AI) | $20/mo |
Everything you need — built for this format. Free to start.
Start Your Fan Fiction FreeNo credit card required · Free forever plan · Cancel anytime