AI Presentation & API Platforms Comparison

Re-dated 2026-09-30, re-checked 2026-10-02

The original (Nov 2024 research, no frontmatter) was rewritten. Only claims re-checked against vendor pages or named sources are kept. Prices change often; vendor pricing pages for Gamma and Canva returned HTTP 403 to the fetch tool, so those figures come from secondary sources and are marked. On 2026-10-02 Plus AI, Decktopus, Presentations.AI and SlidesAI were re-checked on their pricing pages and added; GenPPT and SketchBubble (site 403 / no content) and GenSpark could not be verified. Gamma and Canva prices and the Tome shutdown rest on secondary sources (see Open items). This is a pricing comparison, so it keeps a dated price snapshot; confirm on vendor pages.

Focus: which AI slide tools can be driven programmatically (REST API) and what they cost. See ai-presentation-tools-overview for the broader landscape and gamma-api for API details.

Summary

Platform	Programmatic slide creation	Pricing (checked 2026-09-30)	Notes
Gamma	Yes: public REST API v1.0 (public-api.gamma.app/v1.0), API key or OAuth 2.0; API keys need Pro, Ultra, Teams or Business	Free (400 one-time credits); Plus $9,Pro$18, Ultra $90 per seat/month (secondary sources; annual billing lower)	Also ChatGPT/Claude connectors on all plans. $100MARRand$2.1B valuation reportedly announced Nov 2025 (Business Wire release returned 403; seen only in search-result text)
Beautiful.ai	Not verified (no API mentioned on its pricing page)	Pro $14.50/monthbilledannually;Team$40/user/month annual ($50 monthly); Enterprise custom; 14-day card-required trial (re-checked 2026-10-02)	Vendor pricing page
Pitch	Not verified	Free (100 one-time AI credits); Plus EUR10 (500 credits/month), Team EUR15 (500), Business EUR20 (750) per month billed annually (re-checked 2026-10-02)	Vendor pricing page
Canva (Magic Design)	Not verified here (Canva has a separate Connect/Apps API, not checked)	Pro about $12-15/month depending on billing and region (secondary sources, unverified)	See canva-presentations
Manus	Manus API v2 exists (api.manus.ai: tasks with multi-turn follow-ups, projects, files, webhooks, skills, agents; v1 deprecated). Its docs do not mention a slides endpoint; slides are made by asking the agent	See manus.im/pricing (details not retrievable)	See manus-slides
Skywork	Own REST API for slides not verified	Pro $19.99/monthor$149.99/year, about 7,000 credits/month; free tier credit-based (secondary sources)	See skywork-ai-slides
Plus AI	Not verified (works as an extension inside Google Slides and PowerPoint; no API checked)	Basic $10,Pro$20, Team $30,Max$200 per month billed annually; 7-day trial with 1,000 credits (vendor page)	Add-in model
Decktopus	Not verified	Pro $9.99/monthannualor$24.99 monthly (750 AI credits); Business and Enterprise on request (vendor page)
Presentations.AI	Not verified	Free (100 credits/year), Pro $20andGold$50 per month billed annually (vendor page)
SlidesAI	Not verified	Free; Pro $10/month($120/year); Premium $20.83/month($250/year) (vendor page)	Google Slides and PowerPoint formats
Tome	none	none	Discontinued, see below

Tome: discontinued

Tome announced in Oct 2024 that it was moving away from presentations; its presentation product shut down on 2025-04-30 and the team now builds Lightfield, an AI CRM. Unexported decks were lost. Source: secondary reporting (SlideSpeak, Deckary, Chatslide blog posts); no primary Tome notice was retrieved.

Gamma API (vendor docs)

• Base URL https://public-api.gamma.app/v1.0/; header X-API-KEY (not Authorization: Bearer) or OAuth 2.0 bearer tokens.
• Endpoints: POST /generations, POST /generations/from-template, GET /generations/{id} (poll), GET /themes, GET /folders, POST /images, GET /gammas/search, export and analytics endpoints.
• Limits: inputText up to 400,000 characters, 1-75 target cards (numCards); exports as pdf, pptx or png (zip).
• Re-confirmed 2026-10-02 against developers.gamma.app/llms-full.txt (also GET /gammas/{id}, archive and delete endpoints; most generations finish in 1-3 minutes).
• Earlier versions of this note said v0.2 sunsets 2026-01-16 and cited a “100,000 token” limit; the current docs give the character limit above.

Choosing (opinion)

• Need slides from code or automation pipelines: Gamma API (the only one of these with a documented slides endpoint among those checked).
• Need an agent to research and then produce a deck: Manus or Skywork, via the agent UI rather than a slides endpoint.
• Need brand control for teams: Beautiful.ai, Pitch, Canva.
• Video rather than slides: see remotion, opus-clip, gling.

Sources

• https://developers.gamma.app and https://developers.gamma.app/llms-full.txt (2026-09-30)
• https://www.beautiful.ai/pricing (2026-09-30)
• https://pitch.com/pricing (2026-09-30)
• https://open.manus.im/docs (2026-09-30)
• https://www.businesswire.com/news/home/20251110805751/en/ (Gamma $100M ARR, via search result, 2026-09-30)
• Secondary: https://www.eesel.ai/blog/gamma-pricing, https://slidespeak.co/blog/tome-alternatives, https://deckary.com/blog/tome-review, https://www.eesel.ai/blog/skywork-ai-review (2026-09-30)
• https://www.plusai.com/pricing, https://www.decktopus.com/pricing, https://www.presentations.ai/pricing, https://www.slidesai.io/pricing (accessed 2026-10-02)
• https://gamma.app/pricing and the Business Wire release returned HTTP 403 on 2026-10-02; https://tome.app returned 404.

Open items

• Gamma and Canva prices: vendor pages blocked (403); secondary only.
• Tome shutdown (2025-04-30): secondary reports only; no primary notice found.
• Whether Beautiful.ai, Pitch, Plus AI, Decktopus, Presentations.AI, SlidesAI offer public APIs: not checked.
• Gamma $100MARR/$2.1B valuation: press release 403; confirmed only through search-result text and gamma-app.