diagram-design vs ngram 2.0: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of diagram-design and ngram 2.0 — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
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diagram-design
Cathryn Lavery
Open-source agent skill that draws editorial diagrams as a single self-contained HTML and SVG file, in your brand's style.
Key features
- 45 Diagram Types: Architecture, quadrant, sequence and many other diagram types chosen by the agent from a plain-language request.
- Self-Contained Output: Each diagram is one HTML file with inline SVG that opens with a double-click and needs no build step.
- Brand Onboarding: Point it at a website and it pulls your palette and fonts so every later diagram matches.
- Import From Other Tools: Convert existing draw.io, Mermaid or Excalidraw diagrams into the editorial style.
- Export to PNG and SVG: Export commands produce images for docs and slides.
- Cross-Agent Support: Installs into Cursor, Claude Code, Codex, GitHub Copilot, Gemini CLI, Cline, Windsurf and Amp via the skills CLI.
Best for
- Architecture Documentation: Generating a frontend, backend, database and cache diagram for a README or design doc.
- Project Prioritisation: Drawing an impact versus effort quadrant of upcoming projects.
- API Flow Explanation: Producing a sequence diagram of a token refresh on 401 for developer docs.
- Brand-Consistent Visuals: Keeping all technical diagrams in the company's colours and fonts.
- Migrating Old Diagrams: Restyling Mermaid or draw.io diagrams into a cleaner editorial look.
ngram 2.0
ngram
AI video creator that turns a prompt or screen recording into editable onboarding, training, demo and explainer videos.
Key features
- Prompt-to-Video: Describe the idea, audience and tone and ngram builds the full video, including narration, soundtrack and animation.
- Plan Approval: ngram outlines every scene and waits for approval before generating anything.
- Screen Recording Videos: Upload a screen recording to produce training and product demo videos.
- Chat-Based AI Editor: Click a frame and describe the change in plain words, and ngram produces a new version.
- Manual Editing Controls: Adjust captions, music and scenes directly with click-level controls.
- AI Avatars and Brand Kits: Use AI avatars, custom voices and BrandKits for consistent branded videos on higher plans.
- Export and Sharing: Download MP4s up to 4K or share a link.
Best for
- Employee Onboarding: Turn a process description into a welcome or onboarding video for new hires.
- Product Demos: Create a feature demo from a screen recording.
- Customer Training: Produce step-by-step training videos for support and success teams.
- Launch Announcements: Make a short launch film for a new product release.
- Process Explainers: Explain internal processes with narrated, animated videos.
- Sales Enablement: Build product explainers sales teams can share with prospects.