AI Tool Comparison
Comparing as AI Ghostwriting & Creative WritingCeltx vs Novelcrafter
Celtx
VS
Novelcrafter
Verdict by Category
Detailed Comparison
Feature
Celtx
Novelcrafter
Pricing
FreemiumCeltx has a free plan with 1 seat and 1 project, and new users get a 7-day trial of paid features before they can stay on the free tier. Paid plans are Writer (up to 3 projects, unlimited comments), Writer Pro (unlimited projects, story development tools and episodic scripts), Team (3 to 15 members with production planning tools and private projects), plus Education and Student plans that require contacting sales or a student email.
The official pricing page is served from a redirected host and did not show dollar amounts when reviewed, only a "Save 25%" label on yearly billing. A search listing for the pricing page shows $18.74 per month billed yearly for the robust writing and story development tier, while third-party roundups report roughly $7.50 per month on annual billing for entry-level access and about $15 to $30 per month overall, so these numbers are reported rather than verified.
Most plans can be billed monthly or annually, Education and Student plans are annual only, and the Student plan advertises over 75 percent off the regular price with three years of discounted pricing. Confirm current prices on celtx.com before subscribing.
PaidNovelcrafter offers a 21-day free trial with no credit card required, giving authors full access to all features before committing.
Paid plans start from just $4/month, making it one of the most affordable full-featured novel writing platforms available. Higher tiers unlock more AI credits, collaboration seats, and team features for writing groups.
The tool connects to external AI providers (OpenAI, Anthropic, Google, Meta, Mistral, OpenRouter) using your own API keys, which means AI usage costs are pay-as-you-go based on your model choice rather than bundled into the subscription — giving authors full flexibility over their AI spend.
Categories
AI Writing Assistant ToolsAI Productivity Tools
AI Writing Assistant ToolsAI Productivity Tools
Summary
Cloud screenwriting and pre-production software for scripts, breakdowns, schedules and budgets
Novel writing software with AI, Codex story bible, and multi-model support for serious fiction authors
Celtx Pros & Cons
Pros
- Combines screenwriting with breakdown, scheduling and budgeting
- Runs in the browser on desktop, tablet and phone
- Real-time collaboration with comments and revision tracking
- Free plan available for one project
- Student and education pricing
Cons
- No AI features are described on the official site
- Subscription-only pricing that some users find expensive
- Free plan limits you to one project
- Reviewers report browser typing can feel slightly laggy
- Budgeting tools may be too basic for professional productions
Novelcrafter Pros & Cons
Pros
- Codex auto-tracks story elements — no more continuity errors across chapters
- Supports 300+ AI models via OpenRouter — never locked into one provider
- Extremely affordable starting at $4/month with 21-day free trial
- 220K+ author community with free courses and monthly writing newsletter
- Works for all genres including NSFW and romance with dedicated support
- Cross-book Codex sharing perfect for series writers
- Built by independent writers, not a VC-backed corporation
Cons
- AI usage costs are separate via your own API keys — not bundled
- Less focused on marketing/SEO content than general AI writing tools
- Some advanced features require learning the Codex system upfront
- No built-in grammar checker like Grammarly
- Collaboration features may require higher-tier plans