ngram vs HeyGen
HeyGen is an AI avatar studio: pick a presenter, paste a script, and a digital twin speaks it in 175+ languages. ngram builds the video from a doc, URL, deck or your own screen recording, then lets you edit it in plain language. This is the honest breakdown for anyone weighing a HeyGen alternative.
ngram
HeyGenTrusted by teams at
Both make video with AI, but they start from opposite ends.
Turning what you already have into a video
Paste release notes, a product URL, a deck or a raw screen recording and ngram writes the script, plans the storyboard, and returns a narrated, on-brand cut.
A digital twin that speaks any script
Record a short clip, get a photoreal avatar, then have it deliver scripts in 175+ languages with lip sync. The strongest fit for talking-head training and localized explainers at scale.
Real product footage, finished automatically
Drop in a screen recording and ngram trims dead air, smooths the cursor, adds zooms, callouts and captions, then exports it for every channel.
Feature-by-feature comparison
The highlighted column is ngram. Where we mark a partial, it works but with caveats — we've noted them.
| ngramAI video engine | HeyGen | |
|---|---|---|
| Build video from a doc, URL or deck | Text, PDF, URL, deck, screenshots, recordings | Script plus avatar; URL-to-video assistHeyGen can pull from a URL, but the core flow is a script delivered by an avatar. |
| Edit your own recorded footage | Upload a recording; auto-cut, zoom, recaption | Built around generated avatar scenesHeyGen generates avatar video; it is not built to edit footage you shot yourself. |
| Script and storyboard preview | Review the plan before anything renders | Edit the script; less storyboard controlYou edit the script text, but there is no scene-by-scene storyboard to approve up front. |
| Audience and channel adaptation | Adapts script, length and CTA to the channel | Manual; you set the script per use |
| Screen recording and demo polish | Cursor smoothing, smart zoom, callouts, step labels | Screen recorder, limited demo automationHeyGen added a screen recorder, but the automated demo polish is not its focus. |
| AI avatar library and realism | Avatar library plus custom faces with lip syncngram has avatars and custom faces, but HeyGen's avatar scale and realism lead the category. | 700+ avatars, Avatar IV photoreal model |
| Instant avatar from a short clip | Upload a face to the team face libraryngram saves custom faces, but HeyGen's instant-twin capture is faster and more polished. | Digital twin from a short self-recording |
| Video translation and dubbing | Translate script, captions, on-screen text, voiceover, lip syncngram translates and re-syncs lips too, but HeyGen's translator is its headline feature with wider language coverage. | Dub and lip-sync in 175+ languages and dialects |
| Voice cloning | Clone your own voice (consent required) | Voice clone on Creator and above |
| AI voiceover | Studio voices synced to the cut, multilingual | Voiceover from the avatar voice library |
| Motion graphics and animated text | Auto text animation, lower-thirds, callouts | Templates and on-screen textOffers templates and text overlays rather than automated motion graphics. |
| Timeline editor | Full timeline for frame-level control | HyperFrames timeline for HTML scenesHeyGen added a HyperFrames timeline in 2026; it covers generated scenes, not imported footage. |
| Brand kit | Logo, colors, fonts, intros applied automatically | Brand controls on higher tiersTeam branding controls sit on the Business plan and above. |
| Multi-format export | 16:9, 9:16, 1:1 with smart reframing | 16:9 and 9:16 outputsExports common ratios, with less automatic reframing across formats. |
| Auto captions | Burned-in, brand-styled, on every export | Captions and subtitles included |
| Developer API and MCP | REST API, webhooks, MCP server for agents | API for avatar and translation generationHeyGen ships a public API; ngram adds an MCP server for agentic workflows. |
| Export quality | Up to 4K | 1080p, 4K on Pro and above |
| Team collaboration | Team workspaces, shared library, brand kits | Seats on Business plan, $20 per extra seat |
| Free tier | 300 one-time credits, no cardngram's free credits are a one-time starter allocation, not monthly. | 3 videos per month, 1 minute each |
| Entry paid price | $29/month, full generation plus editing | $29/month Creator ($24 annual), 600 creditsBoth meter usage with credits; HeyGen's Avatar IV burns about 20 credits per minute. |
Where each tool wins
Give ngram release notes, a URL or a deck and it writes the script, plans the storyboard, and renders a narrated cut. HeyGen needs you to bring a finished script for a presenter to read.
Drop in a raw screen recording and ngram trims dead air, smooths the cursor, adds smart zooms, callouts and step labels. HeyGen generates avatar scenes rather than editing the footage you shot.
ngram shows the script and storyboard up front, so you fix direction in plain language before anything renders. HeyGen lets you edit the script, but there is no scene-by-scene plan to sign off on.
Ask for a LinkedIn 9:16 version, a sales walkthrough and a localized variant of the same message; ngram adapts structure, pacing and voiceover per channel from a single source.
A REST API, webhooks and an MCP server let agents and workflows create on-brand videos programmatically, including from screen recordings HeyGen would not edit.
700+ avatars and the Avatar IV model deliver photoreal presenters that hold up on camera. When a talking head is the whole video, HeyGen's avatar quality leads the category.
Record a short clip and HeyGen builds a personalized avatar that delivers any script in your likeness. The capture-to-twin flow is faster and more polished than uploading a custom face elsewhere.
HeyGen's translator dubs a video into 175+ languages and dialects with lip sync, keeping the speaker's tone. For global training libraries, that breadth is its standout feature.
Which tool is right for you?
Building business videos from the assets and footage you already have.
- You have a doc, deck, URL or screen recording and want a finished video, not a blank timeline
- You work in product marketing, growth, sales enablement or customer success
- You turn rough screen recordings into polished product demos and walkthroughs
- You need the same message as a launch video, a social cut and a localized variant
- You want to approve the script and storyboard before anything renders
- You want video generated through an API or MCP inside your own workflow
Generating avatar-led, multilingual talking-head videos at scale.
- You want a talking-head video without filming, using a photoreal AI avatar
- You need to dub one video into many languages with lip sync for global training
- You want a consistent presenter or your own digital twin across every video
- You produce scripted explainers and courses rather than product demos from footage
- You localize a large training library and avatar lip sync matters more than editing footage
What ngram builds that an avatar studio does not
Script Generation
Turn release notes or a URL into a structured, editable video script, not just lines for an avatar.
Screencast editing
Auto cursor smoothing, zooms and callouts on the raw captures HeyGen would not edit.
AI Avatar talking head
Lip-synced avatars and custom faces for the scenes that do need a presenter.
Motion Graphics
Animated text, lower-thirds and transitions added automatically across scenes.
Brand Kit
Logo, colors and fonts applied to every export, not gated behind a top tier.
Translation
Localize a finished video across script, captions, voiceover and lip sync.
AI Voiceover
Studio voices synced to the cut, with your own cloned voice on consent.
Multi-format Export
Every platform aspect ratio from a single render with smart reframing.
What teams ship with ngram instead of an avatar read
Product demo video
Turn a rough screen walkthrough into a narrated, on-brand demo.
Feature announcement
Generate a launch clip straight from release notes.
Training video
Build course modules from an SOP or deck, real footage included.
Explainer video
Make a complex idea land in under a minute, beyond a talking head.
Sales demo video
Record once, then generate a tailored demo per prospect.
Customer onboarding video
Turn a help doc and recording into a guided tutorial.
Social media clips
Cut a long recording into platform-native vertical clips.
Changelog video
Convert a changelog entry into a watchable update.
Point tools to finish the take
AI Avatar Video Generator
Spin up a lip-synced avatar scene without leaving ngram.
Try AI Avatar Video GeneratorVideo Translator
Re-voice and subtitle a finished clip in another language.
Try Video TranslatorScreen Recorder
Capture your screen and get an auto-edited clip back.
Try Screen RecorderVideo Cutter
Trim by transcript instead of dragging a timeline.
Try Video CutterAI Voice Generator
Studio-quality voiceover from a script in seconds.
Try AI Voice GeneratorVoice Dubber
Dub a recording into a new language while keeping the pacing.
Try Voice DubberAuto Subtitle Generator
Frame-accurate captions in 100+ languages.
Try Auto Subtitle GeneratorEye Contact AI
Look at the camera even while reading a script.
Try Eye Contact AIYou do not need a script and an avatar to begin
Turn a doc into a narrated walkthrough, no avatar required.
Convert Docs to VideoPoint ngram at a page and get a hero video back.
Convert URL to VideoConvert a PDF into a clean explainer.
Convert PDF to VideoShip a launch clip straight from the changelog.
Convert Release notes to VideoEach slide becomes a narrated scene.
Convert PPT to VideoUpload a capture and get a polished demo back.
Convert Screen recording to VideoWire ngram into the workflow you already run
whenAn agent needs a video built from a doc, not just an avatar read
thenngram returns a finished, on-brand MP4 plus a share link
whenA new screen recording lands in your drive
thenAuto-edit it and drop the finished clip into Slack
whenA localized cut of your explainer finishes rendering
thenPublish to YouTube with a title and chapters
whenA HubSpot deal moves to 'Demo sent'
thenGenerate a personalized demo clip from a recording and attach it
whenA self-hosted workflow needs a video step
thenRender on your own VPC so no footage leaves the box
whenA 9:16 cut of your update is ready
thenPost it to LinkedIn in the native vertical format
Who reaches for ngram instead of an avatar studio?
Product Marketing
Launch films and demos generated from release notes, no reshoot.
See how ngram stacks up against the rest.
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Still deciding?
Build your first video from what you already have with ngram
Start from a doc, a script or a rough recording and get a finished, on-brand video back. Free to try — see how ngram compares to HeyGen on your own content.