Stash vs Gamma: Multi-Purpose AI Agents vs AI Presentation Maker

Gamma has taken the presentation world by storm, hitting $100M ARR and a $2.1B valuation by making it incredibly easy to create beautiful slides with AI. Stash takes a different approach: instead of specializing in one format, it brings AI agents to all your files - presentations, documents, spreadsheets, PDFs, and more.

Should you use an AI tool specialized for presentations, or a general-purpose AI agent? Let's compare.

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What is Gamma?

Gamma is an AI-first presentation and document creation platform. With 70 million users and over 400 million assets created, it's become a popular alternative to PowerPoint.

Key Features:

• AI presentation generation: Create entire decks from prompts or documents
• AI design agent: Gamma 3.0 turns rough notes into polished visuals
• Templates: Beautiful, modern design templates
• No formatting hassle: AI handles layout, visuals, and design automatically
• Web-based: Accessible from any browser
• Interactive content: Embed videos, charts, websites in presentations
• Collaboration: Share links, real-time collaboration

Gamma is specialized for creating presentations, documents, and websites with AI-powered design.

What is Stash?

Stash is an AI-powered desktop application that combines a persistent file system, long-term memory, and real-time access to your files and information.

Key Features:

• Persistent file system: Complete workspace that AI understands and remembers
• Long-term memory: Maintains context across all your documents and sessions
• Real-time integrations: Direct access to Gmail, Google Drive, Notion, bookmarks
• Natural language workflows: Build custom automations without complex agents
• Learns your voice: AI sounds and acts like you over time
• Works with any files: PowerPoint, Google Slides, Excel, Word, PDFs, images
• Bulk operations: Update hundreds of files at once
• Version control: Full change history with instant rollback

Stash is general-purpose - it organizes, synthesizes, and automates work across all your files.

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Key Differences

Gamma: Pros and Cons

Pros

✅ Beautiful design out-of-the-box - AI generates polished, modern visuals ✅ Fast presentation creation - Go from idea to deck in minutes ✅ No design skills needed - AI handles layout, colors, typography ✅ Web-based - Access from anywhere, no installation ✅ Templates - Extensive library of professional designs ✅ Interactive features - Embed charts, videos, websites ✅ Collaboration - Share links, work together in real-time ✅ Huge user base - 70M users, proven product-market fit

Cons

❌ Gamma ecosystem only - Can't edit your existing PowerPoint files ❌ One presentation at a time - No bulk operations across many decks ❌ No memory - Doesn't remember your projects or preferences long-term ❌ Limited file types - Focused on presentations/documents, not spreadsheets or PDFs ❌ Migration required - Need to recreate existing presentations in Gamma

Stash: Pros and Cons

Pros

✅ Works with existing files - Updates your PowerPoint and Google Slides files directly ✅ Persistent file system - Complete workspace with long-term memory ✅ Real-time data access - Direct access to files, emails, and integrations ✅ Learns your voice - AI that sounds and acts like you ✅ Multi-file type - Works on Excel, Word, PDFs, not just presentations ✅ Natural language workflows - Build automations without coding ✅ Version control - Full change history and instant rollback ✅ Privacy-focused - Desktop app, data stays local

Cons

❌ Not optimized for design - Won't create beautiful visuals like Gamma ❌ Desktop only - No web or mobile access ❌ Limited templates - Not a template library like Gamma ❌ Creating from scratch - Better at updating than creating new presentations

<!-- Screenshot placeholder: Gamma AI design vs Stash bulk editing -->

Who Should Choose Gamma?

Gamma is ideal if you:

• Need to create presentations from scratch quickly
• Want beautiful, modern design without design skills
• Value pre-built templates for various use cases
• Prefer web-based tools accessible anywhere
• Are starting fresh (not updating existing PowerPoint files)
• Need interactive presentations with embedded content
• Want collaboration features for team presentations
• Don't mind working in the Gamma ecosystem

Best use cases: Creating pitch decks, marketing presentations, educational content, proposals, sales decks - all from scratch with beautiful design.

Limitation: Gamma is great for creating new presentations but can't bulk-update your existing 50 PowerPoint files with new data.

Who Should Choose Stash?

Stash is ideal if you:

• Need to update existing PowerPoint or Google Slides files
• Deal with information overload across multiple file types
• Want persistent memory that remembers your entire work context
• Need real-time access to files, emails, and integrated data
• Want AI that learns your voice and organizational patterns
• Work with multiple file types (presentations, spreadsheets, documents)
• Want to build natural language workflows for automations
• Are tired of manually updating the same slides every month

Best use cases: Updating quarterly board decks, maintaining client presentation libraries, automating monthly report slides, bulk updating templates, PowerPoint automation workflows.

Limitation: Stash won't create beautiful designs from scratch like Gamma - it's better at updating and automating existing files.

Can You Use Both?

Yes - and this is actually a smart combination.

Use Gamma for: Creating new presentations from scratch with beautiful design.

Use Stash for: Updating those presentations (and many others) with new data, automating monthly updates, bulk operations.

Example workflow:

1. Create with Gamma - Build a beautiful quarterly review template
2. Export to PowerPoint - Download as .pptx file
3. Automate with Stash - "Update this template with Q1, Q2, Q3, Q4 data and create 4 versions"
4. Share - Distribute the updated PowerPoint files to stakeholders

Gamma for creation, Stash for automation.

<!-- Screenshot placeholder: Workflow combining Gamma and Stash -->

The PowerPoint Update Problem

Here's a common pain point: You have 30 client presentations that need monthly updates with new metrics.

With Gamma:

• Create beautiful presentations from scratch ✅
• Update 30 existing PowerPoint files with new data ❌

With Stash:

• Create beautiful presentations from scratch ❌
• Update 30 existing PowerPoint files with new data ✅

If your problem is "I need beautiful slides quickly," choose Gamma.

If your problem is "I have 30 decks that need updating every month," choose Stash.

Final Recommendation

Choose Gamma if you're creating presentations from scratch and want beautiful, modern design with minimal effort. Gamma is exceptional for this.

Choose Stash if you have existing presentations (PowerPoint, Google Slides) that need regular updates, bulk operations, or automation across many files.

The reality: These tools solve different problems.

Gamma is a presentation creation tool - it replaces the blank canvas problem with AI-generated beautiful slides.

Stash is an automation tool - it takes your existing presentations (and other files) and automates repetitive update work.

For one-time presentation creation with beautiful design, Gamma wins hands down. Its AI design agent and template library are unmatched.

For recurring presentation updates, bulk operations, and multi-file automation, Stash is purpose-built for this workflow. Updating 50 monthly client decks with new data? Stash does this in minutes; Gamma requires manual work on each deck.

Most knowledge workers could benefit from both: Gamma for creating beautiful decks from scratch, Stash for automating updates across existing presentation libraries.

But if you only choose one:

• Creating new → Gamma
• Updating existing → Stash

Ready to Try Stash?

Stash Desktop automates work across your presentations and all your other files.

Download Stash Desktop • Learn about PowerPoint automation • Explore all features