Simple pricing. No surprises.
Choose the plan that fits your creative needs.
Personal
billed annually
Everything you need to start writing spicy serialized fiction.
Get StartedPro
billed annually
Character builder guide, in-character interviews, and style analysis.
Get StartedPremium
billed annually
Custom burn profiles, premium models, and Spark Chat.
Get StartedCompare all features
Everything you need to know, feature by feature.
| Feature | Personal | Pro | Premium |
|---|---|---|---|
Stories The creative canvas for your fiction | |||
Stories Total stories across all projects | 5 | 10 | Unlimited |
Chapters per story Maximum parts per story, distributed across burn phases | Up to 5 | Up to 10 | Up to 15 |
Chapter length Word count ceiling per generated chapter | 1,500 words | Up to 2,500 words | Up to 4,000 words |
Characters per story Characters you can cast in a single story | Up to 2 | Up to 3 | Up to 4 |
Content explicitness How far the writing goes — from tension-only to fully explicit | Mature | Explicit | Explicit |
Voice & Prose The dimensions that shape how your writing sounds | |||
Voices Reusable narrative voice configurations across stories | 1 | 3 | Unlimited |
Prose styles Eight narrative registers — from Deep Slow Burn to Romcom | |||
Tone selection Seven emotional colorings that inflect every sentence | |||
POV selection First person, second person, or third person narration | |||
Dialog tuner Control the ratio of dialogue to interior narration | |||
Style analyzer Paste your own writing and extract a matching voice profile | |||
Style fingerprint Free-text instructions that further shape the system's prose output | |||
Characters Characters driven by desire, conflict, and rich backstory | |||
Characters Characters you can create with enrichable backstories | 4 | 10 | Unlimited |
Portraits Generated character portraits at different intimacy levels | Everyday, Intimate | Everyday, Intimate, Sensual | Everyday, Intimate, Sensual |
Character forms Body types: human, humanoid, and non-human | |||
Desire tensions Core psychological conflicts that drive a character's interiority | |||
Spark character details Generated backstory, personality, and physical details | |||
Enrich character details Deepen existing character fields with layered nuance | |||
Character builder guide Conversational guide that develops characters through dialogue and builds a full profile | |||
Character interviews In-character conversations to explore voice, backstory, and depth | |||
Illustrations Generated art for your stories and chapters | |||
Story illustrations Cover art or key scene visual for each story | Premium quality | ||
Chapter illustrations Generated scene illustrations for each chapter | Premium quality | ||
Pacing & Structure How desire escalates across your story's arc | |||
Burn profiles Structural pacing templates that shape how desire escalates | Standard | Standard & premium | Standard, premium & custom |
Role assignments Assign protagonist, love interest, and supporting roles | |||
Outline mode A dedicated view for shaping your chapter-by-chapter structure before writing prose | |||
AI Drafting Tools that generate and shape your story | |||
Spark story ideas Generated story premises based on your characters and voice | |||
Spark Chat In-context assistant to brainstorm and discuss your story | |||
Enrich premises Deepen a story premise with thematic layers and subtext | |||
Spark chapter outlines Generated chapter-by-chapter outlines from your premise | |||
Story memory Tracks character states, plot threads, and narrative position across chapters | |||
Forbidden words Words excluded from all generated text | |||
Trigger topics Sensitive subjects flagged for careful handling or blocked entirely | |||
AI pattern avoidance Suppresses common AI tells and overused constructions | |||
Editorial & Review Refine, compare, and quality-check your drafts | |||
Refine selection Highlight any passage and rephrase, intensify, shorten, or expand | |||
A/B comparison Compare two versions of a passage side by side | |||
Continuity reviewer Checks character and plot consistency across chapters | |||
Repetition reviewer Flags repeated phrases, sentence structures, and word patterns | |||
Burn integrity reviewer Validates chapter aligns with the burn profile's phase expectations | |||
Reading & Sharing Read, share, and export your finished work | |||
Reading mode Distraction-free reading view for your finished story | |||
Shareable stories Share stories via link for anonymous readers | |||
Author profile Public landing page showcasing your author profile and all shared stories | |||
Export How you get your stories out — clipboard, Markdown, or PDF | Clipboard | Clipboard, Markdown & PDF | Clipboard, Markdown & PDF |
Custom PDF branding Remove Slow Burn Studio watermark and use your own branding | |||
Multilingual storiesComing Soon Generate stories in languages beyond English | |||
NarrationComing Soon Text-to-speech narration of your finished chapters | |||
Projects Workspaces that scope your stories, characters, and voices | |||
Projects Separate workspaces that scope stories, characters, and voices | 1 | 1 | 3 |
Model selection Choose the AI model for chapter generation | Standard models | Standard + Pro models | All models |
Project exportComing Soon Download an entire project as a portable archive | |||
Pricing questions
Yes. You can upgrade or downgrade at any time. When you upgrade, you get immediate access to the higher tier's features. When you downgrade, your current billing period finishes before the change takes effect.
Every new subscriber gets 7 days of Pro features included with their Personal plan — the character builder guide, in-character interviews, premium burn profiles, style analyzer, and more. After 7 days, your plan's standard features apply. Upgrade anytime to keep Pro access.
You'll see a clear notification when you're approaching a limit — like story count or chapter length. You can upgrade anytime to unlock more capacity, or manage your existing content to stay within your plan.
Yes. If you're not satisfied within the first 14 days of a new subscription, contact us for a full refund. No questions asked.
We accept all major credit cards (Visa, Mastercard, American Express) through Stripe. All payments are encrypted and secure.
Yes. Both monthly and annual plans renew automatically. You can cancel anytime from your account settings — your access continues until the end of your current billing period.