AI generation quality
Winner: GammaThe category's headline fact: Gamma's first drafts arrive with real art direction — visual hierarchy, varied layouts, charts that read — while Canva's Magic Design assembles a competent, template-true deck. The distance between 'present it as-is' and 'good starting point' is this round.
Iteration
Winner: GammaGamma's Agent edits the whole deck conversationally — 'make it more executive, add a competitive slide, source the market numbers' — with web research and citations on request. Canva iterates the way design tools always have: you, dragging. Powerful, but manual.
Post-generation editing
Winner: CanvaWhen the AI gets you 80% there, Canva's editor makes the last 20% take minutes — every element a drag away, your fonts and assets loaded, the colleague fixing slide six already fluent in the tool. Gamma's editing is good; Canva's is the industry's benchmark.
Brand & team governance
Winner: CanvaLocked brand colors, approved fonts, shared templates, team workflows — decks that look like your company made them no matter who prompts. This is the enterprise layer purpose-built rivals are still building, and for organizations it often decides the whole comparison.
Free tier
Winner: GammaGamma's 400 signup credits come with full PPTX, PDF, and Google Slides export — rare in this category, and enough to genuinely evaluate it before paying. Canva's free tier is broad but keeps more of the deck-relevant premium assets behind Pro.
The bundle math
Winner: CanvaCanva Pro (~$15/month annual) covers the deck plus every other artifact a team ships — social, one-pagers, video clips — with 265 million monthly users' worth of ecosystem behind it. Gamma's $9–18 tiers are deck-focused value; Canva's subscription replaces three tools.
The meters
TieBoth charge for AI by the credit: Gamma's tiers meter generation (heavy image use eats them fast), and Canva's heaviest AI use now runs through its AI Pass add-on. Neither is 'unlimited'; both reward reading the allowance fine print — our reviews carry the details.