Pay for the size of your world.
Start free with one book. Move up when your series, or your universe, needs more room.
Free
One book, to see if PlotForge fits.
Forever free. No credit card needed.
AI
- 8,000 AI words a month
- 20 AI chat messages a monthReplies use your monthly AI words
- GPT-4.1 Mini for drafting, GPT-4o for chat
Your world
- 1 project
- 10 characters and 10 chapters per project
- 10 worldbuilding items per project
- 25 consistency items per projectStory facts the consistency checker holds your chapters to
Export and backup
- Plain text (.txt) export
- Full project JSON backup
Starter
Room for a series: 3 books, 50 worldbuilding items each.
Billed monthly
Everything in Free, plus:
AI
- 50,000 AI words a month
- 200 AI chat messages a monthReplies use your monthly AI words
Your world
- 3 projects
- Books in a series share one cast
- Unlimited characters and chapters
- 50 worldbuilding items per project
- Unlimited consistency items
Import and export
- Smart ImportBring in a manuscript, chapters, or characters
- Word (.docx) export
Pro
A whole universe: unlimited books and worldbuilding.
Billed monthly
Everything in Starter, plus:
AI
- 200,000 AI words a month
- Unlimited AI chat messagesReplies use your monthly AI words
- Claude Sonnet 5 for proseAlso available in AI chat
- The Voice EngineKeeps AI prose sounding like you
Your world
- Unlimited projects
- Unlimited worldbuilding items
Export
- PDF export
Not sure which plan? Start on Free. Everything you build carries over when you upgrade, and new subscriptions come with a 14-day money-back guarantee (conditions apply).
Compare every limit
| Limit | Free | Starter | Pro |
|---|---|---|---|
| AI words a month | 8,000 | 50,000 | 200,000 |
| AI chat messages a month | 20 | 200 | Unlimited |
| Drafting model | GPT-4.1 Mini | GPT-4.1 Mini | Claude Sonnet 5 |
| Chat model | GPT-4o | GPT-4o | GPT-4o or Claude Sonnet 5 |
| Projects | 1 | 3 | Unlimited |
| Characters per project | 10 | Unlimited | Unlimited |
| Chapters per project | 10 | Unlimited | Unlimited |
| Worldbuilding items per project | 10 | 50 | Unlimited |
| Consistency items per project | 25 | Unlimited | Unlimited |
| Smart Import | No | Yes | Yes |
| The Voice Engine | No | No | Yes |
| Exports | .txt | .txt, .docx | .txt, .docx, .pdf |
| Full project JSON backup | Yes | Yes | Yes |
Need Extra Words?
One-time coin packs for big projects or writing sprints. One coin is one AI word, and coins never expire.
Small Pack
100,000 words
One-time purchase
$0.06 per 1,000 words
Medium Pack
400,000 words
One-time purchase
$0.045 per 1,000 words
Large Pack
1,000,000 words
One-time purchase
$0.035 per 1,000 words
Coins are used automatically when your monthly allowance runs out. They never expire.
Frequently Asked Questions
What counts as a word?
Every word the AI writes for you counts toward your monthly allowance: outlines, chapters, character and worldbuilding details, revisions, and AI chat replies.
What happens when I run out of words?
If you have coins from a coin pack, the AI keeps going and uses those (one coin is one word). Otherwise AI features pause until your allowance resets next month, or until you buy a coin pack or upgrade. Everything you've written stays open and editable.
Can I switch plans or cancel?
Yes. Switching between Starter and Pro takes effect right away, and Stripe credits or charges the difference for the rest of your billing period. To cancel, use Manage Subscription in Settings. You keep your paid plan until the end of the period you have paid for.
Do you offer refunds?
Yes. New subscriptions have a 14-day money-back guarantee: email support@plotforge.app within 14 days of your first payment. Very heavy use in those 14 days, such as finishing a book, can void it. Read the full policy in the Terms of Service.
Do I have to use the AI?
No. Outlining, characters, worldbuilding, and drafting all work without it, on every plan. The AI is there when you want it.
How many books can I write?
Each project is one book. Free includes 1 project, Starter 3, and Pro unlimited. Characters, chapters, and worldbuilding items have their own limits on Free and Starter, listed on each plan above.
What is the Voice Engine?
A Pro feature. It analyzes samples of your writing and uses that profile to keep AI-generated prose sounding like you rather than generic AI output.