Gamma Alternative
Gamma makes every kind of AI doc. StoryVoice only makes case studies — and does it end-to-end.
Gamma is a general-purpose AI presentation maker that generates everything from pitch decks to one-pagers — including case studies. Case study is one of many document types in a very broad product. StoryVoice goes the opposite direction: one job, done completely, including the customer voice interview that Gamma (and every other tool in the category) leaves to you.
Gamma on G2: 4.1/5 (25 reviews) · Verified 2026-04-22
StoryVoice vs. Gamma
| Feature | Gamma | StoryVoice |
|---|---|---|
| Numbers traced to what the customer said | None. You type the metrics into a prompt yourself, so there is no interview to check them against. | Every metric card links to the exact sentence the customer said it in. Computed or stated, always checkable, never just asserted. |
| Customer approves the finished story | Viewer, Commenter, or Editor sharing, the same generic permissions on every Gamma document. A comment on a slide is not a decision, and nothing routes back to the customer for sign-off. | The customer reviews the finished story by link, no account needed. She can approve it, send it back with a note, or edit it herself. |
| Primary product | General AI presentation / document maker (case study is one template) | Purpose-built AI case study tool |
| Input method | Paste prompt, metrics, or outline | AI voice interview — StoryVoice captures the story |
| Customer interview | Not included — user conducts it separately | AI-guided voice interview via shared link, no login |
| Output format | Interactive deck (exports: PDF, PPTX, Google Slides) | Publish-ready 800+ word narrative with metric cards + pull quotes |
| Free tier | Free templated decks (up to 10 cards per prompt) — content must come from you | First voice interview free |
| Starting paid tier | ~$8/mo (Plus) for unlimited use + branding removal | $49/mo (Starter) — 5 full interviews/month |
| Target user | Broad — students, prosumers, marketers, founders (250M+ docs claimed) | B2B SaaS marketing teams and founders specifically |
| G2 rating | 4.1/5 (25 reviews) | New to G2 (Q2 2026 review push) |
What actually differs
Gamma and StoryVoice target different buyers. Gamma is a general-purpose AI presentation maker: 250M+ documents generated according to their homepage, covering investor pitch decks, social media posts, case studies, and more. Its free tier allows output at $0. If you need AI-generated decks across many document types, Gamma covers that ground.
Case studies specifically, though, are not Gamma's product focus. The /products/documents/case-studies page is a long-tail SEO landing page for people searching the keyword. Output is a presentation-style deck, which may or may not match how your B2B buyers actually consume case studies (many prefer PDF or web copy they can skim). And critically — like every other tool in this category — Gamma assumes you already have the customer's story. Paste in the metrics, context, and quotes; Gamma will structure them into a templated deck.
StoryVoice solves a different problem: capturing the story in the first place. Our AI-guided voice interview replaces the scheduled-call-transcription-writing cycle that typically takes 4-6 weeks. Customers record asynchronously, 5 minutes of their time, on their schedule. StoryVoice's AI asks structured follow-ups to extract specific metrics and memorable quotes, then writes the full case study in under 15 minutes.
The numbers on G2 tell an interesting story. Gamma claims 250M+ documents generated but has only 25 G2 reviews and a 4.1/5 rating — unusually low given the scale. The interpretation: Gamma's customer base is dominated by consumers and prosumers (students, solo professionals, hobbyists) who don't leave B2B G2 reviews, and the lower rating suggests mixed satisfaction when output is evaluated against specific B2B quality bars. StoryVoice is building its G2 presence from the opposite direction — purpose-built quality for a narrow B2B audience.
A StoryVoice case study is not finished when the AI writes it. It is finished when the customer approves it, by a link that needs no account, with the choice to sign off, send it back with a note, or edit it herself, and every number in it opens to the exact sentence she said it in. Gamma has neither half. Its case studies are prompt-built, so you type the metrics in yourself and there is no interview for a number to trace back to, and the only sharing options are Viewer, Commenter, or Editor, the same generic permissions Gamma puts on every document type it makes. A comment on a slide is not a decision, and nothing routes back to the customer whose name is on the story.
If you want to produce 50 presentations this month across many formats and you already have the content, Gamma covers that. If you want 5 B2B case studies this month built from real customer conversations, without scheduling a single call, StoryVoice is purpose-built for that.
Which is right for you?
Choose StoryVoice if:
- →You need B2B case studies specifically and quality matters
- →Your bottleneck is getting customers to participate, not generating documents
- →You want output that reads like a writer made it, not a template filled by AI
- →You're producing sales-enablement assets for a B2B SaaS go-to-market motion
- →You want to ship 5+ case studies per month, repeatably
Choose Gamma if:
- →You need many document types beyond case studies (pitch decks, one-pagers, websites)
- →You want free templated decks from content you already have
- →Your use case is consumer or prosumer, not enterprise B2B
- →You want interactive deck output with multiple export formats
- →You're okay with template-style output; bespoke quality isn't critical
Frequently asked questions
Is Gamma a dedicated AI case study generator?
No. Gamma is a general AI presentation and document maker that has a case study template among hundreds of other document types. Their homepage claims over 250 million presentations, websites, social posts, and documents have been generated via the platform. Case study is a long-tail SEO capture page, not the product focus.
Why does Gamma have only 25 G2 reviews if they've generated 250M documents?
Gamma's user base skews toward consumers, prosumers, and individual users — students, solo professionals, hobbyists — who don't typically leave enterprise B2B reviews on G2. Tools with fewer total users but stronger B2B buyer concentration (like Storydoc, with 66 reviews despite being smaller) get more G2 activity per user. It's a signal about target audience, not about Gamma's quality per se.
Can I use Gamma for B2B case studies?
You can, and many teams do — the free tier allows output at $0 and the result is visually designed. But Gamma doesn't conduct the customer interview, doesn't produce written narrative output (just decks), and doesn't have B2B-specific features like structured metric extraction or sales-enablement formats. For a quick visual case study from content you already have, Gamma covers that. For a production-quality B2B case study pipeline, a purpose-built tool will serve you better.
How does StoryVoice's pricing compare to Gamma's?
The two free offers cover different work. Gamma's free tier produces templated decks at $0 — but only from content you provide; the story, quotes, and metrics still have to come from you. Paid Gamma tiers start around $8/month. StoryVoice starts at $49/month and includes the part no deck tool covers: the AI voice interview that captures the story directly from your customer, and the written case study built from it.
Is Gamma good for non-English case studies?
Gamma supports multiple languages for output; StoryVoice's voice interview is currently English-first, with expanded language support on our roadmap. Note what's actually being translated, though: Gamma translates templated output from content you provide — capturing the customer's story is still on you, in any language. That capture step is the part StoryVoice automates.
Which tool produces output that looks more like a traditional B2B case study?
StoryVoice. Gamma produces an interactive deck built from content you supply. StoryVoice produces a written narrative in the structure of a Stripe or HubSpot case study (headline, challenge, solution, results, quote) — the format most B2B buyers recognize and most sales teams actually forward. If the job is a case study your sales team deploys, the written narrative is the one doing that work.
Can I get my customer to review a Gamma case study before I publish it?
StoryVoice sends the finished story to the customer by a link that needs no account. She can approve it, send it back with a note, or edit it herself, and every metric card opens to the exact sentence she said it in. Gamma's sharing options are Viewer, Commenter, and Editor, the same generic permissions on every Gamma document, with no approval action distinct from leaving a comment and nothing that routes the finished story to your customer for an actual decision.
Compare StoryVoice to other AI case study tools
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