Gamma

AI presentation and document builder for decks, docs, and sites

KINDA · partial replacement
price $9/mo per seatsubscription / year $108estimated build time weekendreplaced by 0 people

An AI slide generator is buildable, but Gamma's strength is layouts, editing model, exports, hosting, analytics, and shareable deck/site UX.

Build verification: not recorded. How we judge buildability

What you give up

  • polished editor
  • responsive card model
  • exports
  • analytics
  • custom domains
  • template quality
  • collaboration

Why people still pay

They pay because the output looks acceptable without wrestling with PowerPoint.

Your build guide

The stack, security requirements, and agent rules for a focused replacement.

Before you start

  • Runtime and tools: TypeScript, React, SVG or Canvas and IndexedDB with a versioned JSON project format.
  • Before starting: A browser with IndexedDB, licensed example assets and fonts, and an agreed output size.
01
TypeScript, React, SVG or Canvas and IndexedDB with a versioned JSON project format
02
Data design: Store Brief, OutlineRevision, Card, SourceReference and Theme; evidence links follow each factual card and the fixed PDF layout is an explicit rendering mode.
03
Setup: A browser with IndexedDB, licensed example assets and fonts, and an agreed output size
engineering roadmap

Implementation plan

1

Phase 1

Pin the working slice and create its example input: Turn user notes into a reviewed outline, render a short deck of responsive cards and publish an optional read-only web version alongside PDF export. Confirm setup: A browser with IndexedDB, licensed example assets and fonts, and an agreed output size.

2

Phase 2

Implement persistence and write-time invariants before decorating the UI: Store Brief, OutlineRevision, Card, SourceReference and Theme; evidence links follow each factual card and the fixed PDF layout is an explicit rendering mode.

3

Phase 3

Connect the working view to real saved state. Maintain one document model for preview, undo and export. Use stable element IDs; save after completed gestures, handle storage quota errors and provide explicit file backups.

4

Phase 4

Expose the app-specific limits and recovery path in context: Begin with text, images and comparison cards. Do not invent supporting statistics or promise perfect editable PowerPoint export; public sharing must expose only a selected revision.

5

Phase 5

Walk through this concrete acceptance case and preserve its exported evidence: Reorder cards and insert an oversized quotation; the web view reflows while PDF preview flags overflow rather than clipping or claiming identical responsive behavior. Finish the README and backup/restore instructions; report unfinished capabilities explicitly.

the pro prompt
download AGENTS.md
Build the following focused alternative to Gamma. This is a deliberately limited personal or small-team substitute, not parity with the paid service.

WORKING SLICE
Turn user notes into a reviewed outline, render a short deck of responsive cards and publish an optional read-only web version alongside PDF export.

SETUP AND ARCHITECTURE
Use TypeScript, React, SVG or Canvas and IndexedDB with a versioned JSON project format. Prerequisites: A browser with IndexedDB, licensed example assets and fonts, and an agreed output size. Before integrating anything, record actual versions and permissions, plus model files or provider limits only where used, in the README; make unavailable dependencies visible rather than simulating success.

DOMAIN MODEL AND INVARIANTS
Store Brief, OutlineRevision, Card, SourceReference and Theme; evidence links follow each factual card and the fixed PDF layout is an explicit rendering mode.

IMPLEMENTATION CONTRACT
Maintain one document model for preview, undo and export. Use stable element IDs; save after completed gestures, handle storage quota errors and provide explicit file backups. Provide an input/setup view, the main work view, and a review/export view appropriate to this workflow. Preserve the last saved state if a job or save fails. Include empty, loading, permission-denied, partial and retryable-error states. Log identifiers and error categories without secret values or unnecessary private content.

APP-SPECIFIC BOUNDARY AND RECOVERY
Begin with text, images and comparison cards. Do not invent supporting statistics or promise perfect editable PowerPoint export; public sharing must expose only a selected revision.

ACCEPTANCE SCENARIO
Reorder cards and insert an oversized quotation; the web view reflows while PDF preview flags overflow rather than clipping or claiming identical responsive behavior. Also reopen the app after an interrupted operation, confirm the saved record/export remains inspectable, and document the recovery action. These are implementation acceptance requirements, not a claim that this guide has been tested.

DELIVERY
Deliver a runnable repository with migrations or project-format versioning, a non-sensitive example, environment/permission setup, the exact manual acceptance steps, and a backup/export-and-restore walkthrough. Implement the working slice before optional integrations; list any deferred paid-product capabilities honestly. Do not add capabilities outside the working slice just to resemble the original product.

PROJECT RULES FOR AGENTS.md
Keep the domain invariants above executable at the write boundary. Propose scope changes before adding providers or permissions. Never fabricate source evidence, publish results, identity matches or successful delivery. Preserve user originals and require an explicit confirmation for destructive changes or external publication.

$ open in your agent (prompt prefilled, you press enter), copy the prompt or copy or download AGENTS.md

prior art · use these instead of building, if you'd ratherSlidevOpen-source Markdown/HTML slide deck generator; good foundation for a developer-oriented c↗
share on X ↗

Gamma pricing

planmonthlyannual (per mo)what you get
free$0/user$0/user400 starting AI credits with no monthly refresh; 10 slides/prompt; 50,000 input tokens; 2,000-credit balance cap; +200 credits/referral.
plus—$9/user1,000 credits/month; 75 slides/prompt; 100,000 input tokens.Annual charge is $108/user. Gamma confirms a monthly option, but the current public page did not expose its exact price.
pro—$18/user4,000 credits/month; 75 slides/prompt; up to 10 custom domains; API access.Annual charge is $216/user. Gamma confirms a monthly option, but the current public page did not expose its exact price.
ultra——20,000 credits/month; 75 slides/prompt; up to 100 custom domains.Currently monthly-only, but the exact introductory monthly price was not exposed in the accessible public page.
team—$20/user6,000 credits/seat/month; 75 slides/prompt; up to 10 custom domains; 2-seat minimum.Annual charge is $240/seat.
business—$40/user10,000 credits/seat/month; up to 100 custom domains; 10-seat minimum.Annual charge is $480/seat.
enterprise——Annual agreement; flexible team size and custom organization-wide credits.Contact sales.

free tier400 one-time starting AI credits; no automatic refresh; 10 slides/prompt; 50,000 input tokens; balance capped at 2,000 credits; +200 credits per referral

billingPlus and Pro offer monthly + annual; annual is advertised as 28% cheaper; Ultra is monthly-only; Team and Business are annual-only; Enterprise uses an annual agreement

hidden costs1,500 extra credits cost $6; multi-user auto-recharge charges separately for each user who triggers it; credits are not pooled; unused paid credits expire after the subscription ends; Team requires 2 seats and Business 10

pricing sources checked 2026-08-13 · pricing source ↗

Questions about Gamma

Can you build your own Gamma with AI?

Partly. An AI slide generator is buildable, but Gamma's strength is layouts, editing model, exports, hosting, analytics, and shareable deck/site UX.

What does the Gamma build prompt cover?

The prompt starts with this scope: Turn user notes into a reviewed outline, render a short deck of responsive cards and publish an optional read-only web version alongside PDF export. Full-product capabilities excluded from the comparison include: polished editor; responsive card model; exports. Follow the implementation plan and its prerequisites before expanding the build.

How do I use the prompt, AGENTS.md and agent skills?

Start with the Gamma prerequisites and stack, then copy the prompt into your coding agent. Save the project rules as AGENTS.md in the project root. Linked skills are optional packages or source instructions for specific tasks; review their current contents and install only those matching the chosen stack. A skill does not supply API credentials or verify the finished app.

How long will this Gamma project take?

The catalogue estimate is weekend for the limited scope. Setup, integration approvals, debugging, deployment and ongoing maintenance can add time. This is an estimate, not a delivery guarantee.

What would I give up by replacing Gamma?

polished editor; responsive card model; exports; analytics; custom domains; template quality; collaboration. They pay because the output looks acceptable without wrestling with PowerPoint.

What price is this guide comparing against?

The recorded Plus plan is $9/mo per seat (annual billing, per user per month), checked 2026-08-13. Check the linked pricing source before buying. Building your own also has hosting, API and maintenance costs; the recorded amount is not a guaranteed saving.

What can I use instead of building Gamma?

The prior-art section lists Slidev as starting points. Review their current scope, license and maintenance before adopting one.

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