Muses

Muses sets itself apart from generic AI chat tools by treating the manuscript, not the prompt, as the centre of the experience. The workspace is organised around five stages of a writing project — Ideas, Structure, Materials, Revision and Memory — so assistance appears exactly where you need it rather than in a detached chat window. Stuck on an opening? It offers inspiration cards you drag into the draft. Building plot? It helps you lay out a three-act structure and add or adjust beats, showing a short rationale for each suggested operation.

The revision flow is deliberately conservative. You describe an edit in plain language — tighten a passage, rewrite it, or leave a sentence alone — and Muses reads surrounding chapters first, then places the proposed changes inline for you to accept or reject individually. A Memory layer keeps earlier chapters, character details and uploaded source materials (@-mentionable files, URLs and images) in context, so late-book continuity holds up. It also supports multiple current AI models and a Voice Scribe feature for dictating prose.

Muses uses a credit unit called StarPower: the free plan includes 50,000 per month, while paid plans scale to 5M, 25M and 100M with annual billing (Plus about $199/year, Pro about $599/year, Ultra about $1,799/year). AI actions pause when the allowance runs out, but your writing is never affected.