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Lastslate
What it is
Lastslate is a screenplay editor for Mac and Windows with an AI collaborator that reads scripts but does not write dialogue. As a writer types, the editor identifies screenplay elements such as sluglines, character cues, and dialogue, and saves automatically. It supports Final Draft FDX, Fountain, plain text, and PDF, and can reconstruct editable scenes from PDF screenplays. The Beat Board connects story beats to script scenes and is included on every plan. Built-in tools derive cast lists, location and prop breakdowns, loglines, and one-sheets from a script. Browser review links let people comment on specific script lines without an account; Pro supports live co-writing with up to 10 writers in one script. Scripts are stored locally by default, while cloud backup is optional and encrypted in transit and at rest. For an AI action, the relevant excerpt, prompt, and session context are sent to the AI provider. Free includes the editor, Beat Board, PDF and FDX export, 10 cloud projects, and limited AI collaboration. Pro is $15 a month; Pro+ is $45 a month.
For and against
For
- Detects screenplay elements while writers type.
- Supports FDX, Fountain, plain text, and PDF.
- Beat Board is included on every plan.
- Reviewers can comment without an account.
- Scripts stay local by default.
Against
- AI collaborator does not write dialogue.
- AI actions send relevant script context to the AI provider.
- Free plan limits AI collaboration and cloud projects.
The verdict
Lastslate brings screenplay editing, planning, and review tools together, with a read-only AI collaborator. Consider its AI data sharing and plan limits alongside its format support and local-by-default storage.
Who it suits
Lastslate suits screenwriters who want screenplay-specific formatting, story planning, and script-derived tools. It can also serve writers who need browser review links or collaborative writing on Pro.
Plans and prices
Free
full editor · PDF and Final Draft export · Beat Board · 10 cloud projects
Read 14 Oct 2026 · lastslate.com
Pro
$15 AI usage included each billing cycle · Unlimited cloud projects · Unlimited version history · Up to 10 writers in one script
Read 21 Sep 2026 · lastslate.com
Pro+
three times Pro AI allowance · unlimited cloud projects and version history · live co-writing
Read 14 Oct 2026 · lastslate.com
Student Pro
Pro plan access · school email required
Read 14 Oct 2026 · lastslate.com
Individual (Pro)
more AI questions · strongest AI models · logline-to-outline · review links
Read 14 Oct 2026 · lastslate.com
Individual (Pro), annual
Extended AI collaborator limits · Advanced models · AI scaffolding · Review links
Read 29 Sep 2026 · lastslate.com
On the record
- AI account options
- Paid plan users can connect their own Claude, OpenAI, or Gemini account or a model running on their computer, with the key stored in the computer's keychain.lastslate.com · read 29 Sep 2026
- AI collaborator
- The collaborator can read as a First Reader, Showrunner, Script Editor or Staff Writer, identify story issues and map arcs, but does not draft screenplay text.lastslate.com · read 14 Oct 2026
- AI data sharing
- When a user invokes an AI action, the relevant script excerpt, prompt, and session conversation context are sent to the AI provider for that request.lastslate.com · read 29 Sep 2026
- AI design rationale
- A June 2, 2026 company article says the product intentionally restricts AI to reading and analysis rather than generating screenplay pages.lastslate.com · read 14 Oct 2026
- AI integrations
- Paid users can connect Claude, OpenAI, Gemini or a model running on their own computer; provider billing applies to those external accounts.lastslate.com · read 14 Oct 2026
- AI limitation
- The terms warn that AI output may be wrong, misleading or unsuitable and must be reviewed by the user.lastslate.com · read 14 Oct 2026
- AI training policy
- Uniqlabs says it does not use scripts, prompts or completions to train models and contracts providers that prohibit such training.lastslate.com · read 14 Oct 2026
- Analytics controls
- Anonymous usage events and crash diagnostics exclude screenplay text and can be disabled in the app settings.lastslate.com · read 14 Oct 2026
- Backup limitation
- The terms make users responsible for their own backups and say cloud backup is only a convenience, not a replacement for backup strategy.lastslate.com · read 14 Oct 2026
- Beat Board
- The Beat Board stores story beats, links them to scenes and is available on every plan; Pro adds reference images.lastslate.com · read 14 Oct 2026
- Cloud security
- Opt-in cloud backups are encrypted in transit with TLS 1.2 or higher and encrypted at rest.lastslate.com · read 14 Oct 2026
- Real-time collaboration
- Yeslastslate.com · read 21 Sep 2026
- Companion Mode
- Companion Mode watches files created in Final Draft, Fade In, Highland, Fountain, plain text or PDF editors and answers questions without modifying those files.lastslate.com · read 14 Oct 2026
- Company legal name
- The application and privacy policy identify Uniqlabs LLC as the publisher and company.lastslate.com · read 14 Oct 2026
- Co-writing
- Pro supports live editing by up to 10 writers in one screenplay with visible cursors and keystrokes.lastslate.com · read 14 Oct 2026
- Drafts
- Named parallel drafts let writers create alternate versions and return to earlier versions without overwriting the main draft.lastslate.com · read 14 Oct 2026
- File formats
- The app imports and exports Final Draft FDX, reads and writes Fountain and plain text, and imports PDF screenplays into editable scenes.lastslate.com · read 14 Oct 2026
- Final Draft compatibility
- Lastslate says title pages, dual dialogue and revision colours survive FDX round trips and pagination matches Final Draft using Courier Prime 12-point and 54 lines per page.lastslate.com · read 14 Oct 2026
