Gamma vs Gixo
They solve two different jobs. Gamma builds web-native, document-style cards you share as a link, with real-time collaboration and view/comment/edit permissions in its own workspace. Gixo Lumen builds 16:9 presentation decks from your source material, with 8 workflow profiles, 33 active themes, citations and source review attached, and hybrid PPTX/PDF handoff. Gamma's free tier runs on a one-time AI-credit grant and watermarks free exports; Lumen runs a no-card 14-day trial and then starts at $10 per month. The sourced, dated breakdown is below.
The 30-second verdict
Most "vs" pages bury the answer. Here it is up front.
You want Gamma's collaborative editor and link-sharing workflow
- You want view, comment, and edit permissions in the Gamma workspace
- You share the artifact as a responsive web link as often as you export it
- You prefer Gamma's editor and templates after testing them with your own brief
- You are fine with a "Made with Gamma" watermark on free exports until you upgrade
You need Lumen's source-review and deck-handoff workflow
- You need 16:9 presentation layouts for a boardroom, lecture, or investor meeting
- You want workflow-specific structure (consulting, finance, sales, fundraising…)
- You need source settings, generation-time provenance, citations, and human review
- You accept hybrid PPTX export: supported elements stay editable while complex slides may be images
What is Gamma AI?
Worth stating plainly before the comparison, because half the confusion in this category is people comparing two different output formats.
Gamma is an AI document and deck tool built around web-native cards
Gamma (gamma.app, and the searches that reach it as "gamma ai", "gamma app" or "gamma ppt maker") generates presentations, documents, and web pages from a topic, pasted text, or an imported file. Its native unit is a card that reflows for the screen it is read on rather than a fixed 16:9 slide, which is why a Gamma link reads well on a phone and why its exported PowerPoint can differ from what you saw in the editor. Gamma documents PDF, PNG, and PPTX export1, and its help centre notes that scaling, fonts, layout, and complex exports can differ2.
Its free entry is a credit grant, not an unlimited plan
Gamma's free tier ran on a one-time AI-credit grant — 400 credits when we checked gamma.app/pricing in June 2026 — and Gamma says free exports carry its watermark, with paid plans generally removing it1. That is the "made with Gamma" mark people ask about. Pricing and credit policy change; recheck gamma.app before you buy.
Where Gixo Lumen sits relative to it
Lumen is not a card tool with a slide export bolted on: it builds 16:9 presentation decks as its native output, with 8 workflow profiles, 33 active themes, source settings and citations attached, and hybrid PPTX/PDF handoff. If your artefact is a link, that difference costs you flexibility. If your artefact is a projected deck or a .pptx someone else edits, it is the whole point.
Sourced feature comparison
Footnoted Gamma rows are sourced to the dated official help pages in the methodology below; unfootnoted rows are our own observation from using Gamma in mid-2026. Gamma's credit and price figures are point-in-time from gamma.app as checked in June 2026 — pricing changes, so confirm the current number with Gamma before you buy. Gixo capabilities use the current approved Lumen claim catalog, and Gixo prices are current as of August 2026.
| Capability | Gixo Lumen | Gamma |
|---|---|---|
| Output format | 16:9 presentation workspace with hybrid PPTX/PDF handoff | Gamma cards that can be shared or exported1 |
| Build from | a topic, notes, briefs, articles, and uploaded reference material | A topic, pasted text, or an imported document, as documented mid-2026 |
| Free entry | No-card 14-day Starter trial with full deck generation and clean hybrid export; existing decks remain reviewable, presentable, and downloadable afterward, while continued AI generation requires paid Lumen | A one-time free AI-credit grant — 400 credits when we checked gamma.app/pricing in June 20263 |
| Branding on free output | No Gixo badge on the deck workspace | Gamma says free exports include its watermark and paid plans generally remove it1 |
| Export formats | PPTX, PDF, HTML, and slide images | PDF, PNG, and PPTX; Google Slides handoff uses the PPTX export1 |
| PPTX fidelity | PowerPoint export is hybrid by design: stable layouts become editable text and shapes, complex slides preserve fidelity as images, and the file opens cleanly in PowerPoint. Before an export runs, a deterministic readiness check inspects every slide and blocks the file when an unresolved placeholder, an unfilled image slot, or a browser-only image would otherwise ship unfinished, while fidelity trade-offs are surfaced as warnings rather than applied silently. | Gamma documents possible differences in scaling, fonts, layout, and complex exports2 |
| Themes & layouts | 33 themes · 25 slide layouts | Template and theme library, general purpose rather than deck-type specific |
| Workflow-specific structure | 8 workflow profiles | General-purpose templates rather than named workflow profiles |
| Source grounding & citations | Grounds in your own sources, with a built-in citation and source-review surface | Gamma Agent can search the web and insert citations |
| Presenter tools | present mode, speaker notes, timer, and shareable delivery | Exports reflect Present Mode rather than Edit Mode2 |
| Real-time co-editing | Not presented here as a real-time co-editing product | Gamma documents view, comment, and edit permissions for collaborators4 |
| Paid entry plan | Lumen Lite $10/mo ($90/yr); Starter $25/mo ($250/yr); Professional $45/mo; Business $55/mo for 5 seats; Enterprise $99/mo — see Lumen plans | Plus was listed at $10/mo and Pro at $20/mo when we checked gamma.app/pricing in June 2026 |
Comparison methodology
Competitor facts below are observations from the linked official sources, checked . Selection guidance is Gixo's editorial opinion, not an independently verified ranking.
- Evaluation criteria
- Workspace collaboration and sharing, source-review workflow, presentation handoff, and export limitations.
- Gixo limitation
- Lumen uses hybrid PPTX export and is not presented here as a real-time co-editing product. Complex slides can be fidelity-preserving images rather than editable PowerPoint elements.
- Refresh rule
- Recheck these facts by 31 October 2026 or remove them from the comparison.
- Gamma Help: export formats and caveats — PDF, PNG and PowerPoint export; Google Slides handoff; free-export watermark; export caveats.
- Gamma Help: export appearance differences — Present-mode export, scaling, font and layout differences, and complex-export limitations.
- Gamma Help: how credits work — Free and paid AI-credit behavior. No deck-count conversion is inferred.
- Gamma Help: collaboration and sharing — View, comment, edit and sharing permissions.
Where Gamma is genuinely strong
A useful comparison says when the other tool is the better pick. Here's where we'd point you to Gamma.
Web-native, responsive sharing
Gamma's card format reflows from desktop to phone, so a link shared on mobile reads as well as it does on a monitor. Gamma also supports link sharing and role-based access in its own workspace. If the deck mostly lives as a shared URL rather than a projected slide, that is a real advantage.
Gamma's own authoring experience
Gamma is fast and produces attractive output from very little input. If your team prefers its editor, themes, and card model after a side-by-side trial, Gamma is the more direct choice. This page does not assign a universal design-quality score.
Collaboration in the Gamma workspace
Gamma documents collaborator permissions for viewing, commenting, and editing. Lumen is not presented here as a substitute for that real-time collaboration requirement.
Where Gixo Lumen is different
The job is not to generate slides once. The job is to hand off a deck another person can actually open, review, and use.
Keep decks grounded to source material and approved web research when needed. Gixo extracts key claims, highlights what needs verification, and surfaces citations, attribution, and trust status inside the deck viewer.
PowerPoint export is hybrid by design: stable layouts become editable text and shapes, complex slides preserve fidelity as images, and the file opens cleanly in PowerPoint. Before an export runs, a deterministic readiness check inspects every slide and blocks the file when an unresolved placeholder, an unfilled image slot, or a browser-only image would otherwise ship unfinished, while fidelity trade-offs are surfaced as warnings rather than applied silently. Human review remains required before delivery.
8 workflow profiles across consulting, finance, startup, sales, executive, product, training, and general business decks. The deck is structured for the job — a consulting readout is shaped differently from an investor pitch.
Decks can cite uploaded source material and approved web research, with a built-in citation, trust-check, and source-review surface for reviewers before handoff. Bring a topic, notes, briefs, articles, or uploaded material and keep the claims traceable.
Create a client-handoff presentation in one workspace, with outline planning, workflow-specific structure, slide editing, citations, presenter tools, and export attached to the same deck.
A no-card 14-day Starter trial with AI generation and clean hybrid export, rather than a one-time credit grant. After the trial, existing decks remain reviewable, presentable, and downloadable; what needs paid Lumen is continued AI generation.
A real deck Gixo generated
Not a mockup — an actual rendered Lumen deck. Scroll it.
Generated with Gixo Lumen and exported to a self-contained HTML deck.
Why teams pick Lumen for decks they have to present
One presentation handoff workspace for teams that need a strong first pass, outline control, theme switching, citations, presenter tools, and delivery without rebuilding the deck somewhere else.
Workflow fit
The deck starts from a consulting, finance, fundraising, sales, executive, product, or general-business workflow instead of generic slide filler.
Outline first
Structure stays reviewable before full generation, so the first pass is shaped like a real deck instead of a prompt experiment.
Editability
Theme switches, layout swaps, slide edits, and regeneration all happen after the deck exists without forcing a rebuild.
Evidence
Decks are grounded in your sources, and evidence — citations, trust checks, source review — has a built-in home in the workspace instead of being bolted on after generation.
Delivery
Speaker notes, present mode, shareable delivery, and exports stay on the same finished deck when it is time to ship.
Gamma vs Gixo: FAQ
Need a PowerPoint handoff?
Test the exported file, not just the editor preview. Gamma documents possible differences in scaling, fonts, layout, and complex exports. Lumen uses hybrid export: supported elements stay editable while complex slides may be fidelity-preserving images. See Gamma to PowerPoint for the current boundary.