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About

ChapterMuse is a desktop writing application for novelists and other fiction writers. It brings manuscript drafting, chapter and scene organization, character profiles, plot planning, and worldbuilding into one workspace. The Studio edition adds tools for organizing locations, factions, and items, along with book formatting and EPUB export. Core writing features run offline, and manuscripts are stored on the user's computer; optional AI tools and cloud services are offered separately. ChapterMuse is available for Windows through the Microsoft Store, with Light, Writer, and Studio editions sold as one-time licenses for the purchased major version and updates within that version. A 30-day trial is offered, and a Mac edition is planned. The software is intended for novelists, independent authors, and writers who want to plan and manage fiction projects alongside their drafts.

About

Meta Model API is a new developer API for building with Muse Spark 1.1, Meta’s multimodal reasoning model built for agentic tasks, coding, tool use, computer use, and multimodal understanding. Now in public preview, it gives developers a way to access Muse Spark 1.1 through an OpenAI-compatible package, making it easier to point existing clients at the API, keep the same code structure, and set the model to muse-spark-1.1. Muse Spark 1.1 is designed for personal agentic tasks that require planning and orchestration across external apps and services, with the ability to generalize to new native tools, MCP servers, and custom skills. As a main agent, it can gather context, make a plan, and delegate execution across parallel subagents; as a subagent, it follows its role, understands available tools, and knows when to escalate back. The model can actively manage a 1 million-token context window, remember actions, retrieve information from much earlier work, and compact context.

Platforms Supported

Windows Supported
Mac Not Supported
Linux Not Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Novelists, fiction writers, independent authors and worldbuilders.

Audience

Developers and anyone needing a multimodal model API for coding agents, tool-using workflows, computer use, and long-context automation

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

£24 one-time
The Light license is £24, Writer is £36, and Studio is £48 as one-time lifetime licenses for ChapterMuse 1, with 1.x updates included. The £24 Light price includes UK VAT; final totals are confirmed at checkout. AI credits are purchased separately. The optional Cloud add-on is £6/month including UK VAT.
Free Version Not Supported
Free Trial Supported

Pricing

$1.25 per 1M tokens
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

ChapterMuse
United Kingdom
www.chaptermuse.com

Company Information

Meta
United States
developer.meta.com/ai/products/meta-model-api/

Alternatives

Musael

Musael

Lucernel

Alternatives

Emberspun

Emberspun

Emberspun AI

Categories

Writing Supported

Categories

Integrations

Continue Not Supported
GitHub Not Supported
Hermes Agent Not Supported
Hugging Face Not Supported
LangChain Not Supported
Llama 3 Not Supported
Llama 4 Behemoth Not Supported
Llama 4 Scout Not Supported
LlamaIndex Not Supported
Meta AI Not Supported
Muse Spark Not Supported
Muse Spark 1.1 Not Supported
Muse Spark 1.2 Not Supported
Muse Spark 1.3 Not Supported
Muse Wonder Full Not Supported
OpenAI Not Supported
OpenAI Agents SDK Not Supported
OpenAI Codex Not Supported
OpenClaw Not Supported
Vercel AI SDK Not Supported

Integrations

Continue Supported
GitHub Supported
Hermes Agent Supported
Hugging Face Supported
LangChain Supported
Llama 3 Supported
Llama 4 Behemoth Supported
Llama 4 Scout Supported
LlamaIndex Supported
Meta AI Supported
Muse Spark Supported
Muse Spark 1.1 Supported
Muse Spark 1.2 Supported
Muse Spark 1.3 Supported
Muse Wonder Full Supported
OpenAI Supported
OpenAI Agents SDK Supported
OpenAI Codex Supported
OpenClaw Supported
Vercel AI SDK Supported
Claim ChapterMuse and update features and information
Claim ChapterMuse and update features and information
Claim Meta Model API and update features and information
Claim Meta Model API and update features and information