Authr vs Sudowrite
Sudowrite is a polished AI writing partner for fiction, with its own story model and a guided path from idea to draft. Here is how Authr compares.
Choose Sudowrite if…
…you want a fiction model that generates prose for you with the least setup, and a guided story-bible pipeline.
Choose Authr if…
…you want agents to review, suggest and check continuity while you stay the author, or you want to bring Claude Code or your own agents.
Authr vs Sudowrite at a glance
| Authr | Sudowrite | |
|---|---|---|
| What it is | Agent-first book-writing app: manuscript, story bible and a team of AI agents in one place | AI writing partner for fiction |
| Platform | Web, on any computer or phone browser | Web |
| Price | Free; Pro $19/month ($190/year); Studio $49/month ($490/year) | Hobby & Student $19/month ($10/month billed yearly); Professional $29/month ($22 yearly); Max $59/month ($44 yearly) |
| Free plan | Yes, unlimited books, every feature | Free trial, no free plan |
| AI | Seven built-in agent roles plus custom ones; any external agent too | Built in, credit-metered: its own Muse and Ballad models plus Claude, OpenAI and open models |
| Your own AI key | No keys needed. Bring your own agent over MCP instead | No |
| API | Yes, full REST API on every plan | No public API |
| MCP server | Yes, official, on every plan | No |
| Story bible | Codex with automatic mention tracking | Story Bible (braindump, characters, worldbuilding, outline…) |
| Relationship map | Yes, relationship graph | No |
| Timeline | Yes | No |
| Collaboration | Up to 3 people on Pro, 10 on Studio | Share links with comments |
| Export | EPUB, DOCX, Markdown, plain text, print-ready PDF, JSON | DOCX, ZIP of the project |
Sudowrite details checked 4 November 2026 from its own website where it would load. Prices change; check Sudowrite for the latest. Spot something out of date? Tell us at support@authr.shop.
Where Sudowrite is stronger
- A fiction-tuned house model, Muse, refined over years.
- A mature guided pipeline from braindump to outline to draft, with a big plugin library.
- The best-known name in AI fiction, with a large community.
Where Authr is different
- Agents in editorial roles (Reviewer, Line editor, Beta reader, Continuity) that comment and file inline suggestions you accept or reject, rather than generating in a side panel.
- An official MCP server, REST API and webhooks, so Claude Code, Cursor or your own bots can work on the book. External agents are unlimited on every plan.
- A free plan with unlimited books, plus a relationship graph, timeline, and EPUB, PDF, Markdown and JSON export.
Questions
What's the main difference between Authr and Sudowrite?
Sudowrite is a polished AI writing partner for fiction, with its own story model and a guided path from idea to draft. Authr takes a different approach: a team of agents in editorial roles that comment, suggest and check continuity in your manuscript, and an open door for Claude Code, Cursor or any agent you already use.
Is Authr cheaper than Sudowrite?
Authr has a free plan with every feature. Pro is $19 a month, the same as Sudowrite's entry plan billed monthly, and agents you connect yourself don't use your allowance at all.
Can I move my Sudowrite project to Authr?
Export your project from Sudowrite as DOCX and import the file into Authr: headings become parts, chapters and scenes.
Is Authr free?
Yes. The Free plan has every feature and unlimited books, with about 15 agent tasks a month for in-app agents. Agents you connect over MCP or the API are unlimited on every plan. Pro is $19 a month and Studio $49.
Other comparisons
Try Authr next to Sudowrite.
Free, with every feature. Import your draft and see what the agents make of chapter one.