AI novel cost calculator
Compare estimated model costs for your chapter length, revisions and writing sessions. No account or API key required.
Your novel
Prices from our latest snapshotOrdered by what fiction writers on OpenRouter actually use.
Estimated total
$0.836
$0.017 per chapter · paid to OpenRouter, not to us
Priced on CoreWeave, the provider we route this model to.
Caching
Reuses 91% of prompt tokens
Saves $0.553 — without caching this novel would cost $1.39.
Where it goes
- Writing chapters
- $0.210
- Revisions
- $0.457
- Chapter summaries
- $0.076
- Searching earlier chapters
- $0.092
- Tokens in / out
- 8.7M / 424.1k
Cost per chapter
An estimate, not a quote. It replays the real call sequence at this provider’s published rates; actual tokenisation and output length vary per model.
Estimate the writing process, not just the final words
Chapter history, revisions, summaries and retrieval all use tokens. Change the inputs to match your habits, then compare several models. These are estimates at the displayed provider rates, not measured writing bills or a promise about prose quality.
Shared free models are a separate way to start without paying. Their availability and speed vary. Paid models require your own funded OpenRouter account.