Video API comparison

Video Generation APIs, Compared

"Video API" covers three different products. Some render a video you design, some generate a short clip from a prompt, and some produce the whole finished video. Here is which is which, with prices read from each vendor's own pricing page.

Three Kinds of Video API

Rendering APIs

Creatomate, Shotstack, JSON2Video

You send
A template or timeline in JSON, plus the text, images, clips and audio to put in it.
You get
Your design, rendered to MP4.
Best for
Branded and data-driven videos where you already have the content: product feeds, personalized videos, ads.

AI video model APIs

Text-to-video and image-to-video models

You send
A text prompt or an image.
You get
One short clip, usually 5 to 10 seconds, with no script, narration or captions.
Best for
B-roll, single shots and creative experiments.

Full-video generation APIs

AutoFeed

You send
A topic, a subreddit, a prompt or an ad hook.
You get
A finished short-form video with script, visuals, voiceover and captions.
Best for
Apps and pipelines that need ready-to-post faceless videos at volume.

Side by Side

Competitor facts from each vendor's pricing page and docs, read on November 2, 2026. AutoFeed facts are read from the running API.

QuestionAutoFeed APICreatomateShotstackJSON2Video
What it isA full-video generation API: one call produces a finished short-form video, from script to captions.A template-based video and image rendering API, with a no-code editor and spreadsheet automation.A timeline-based video editing and rendering API, with templates, a studio editor and a white-label editor SDK.A JSON-to-video editing API: describe scenes and elements in JSON, get an MP4.
What you sendA video type (8 types) and a few inputs, such as a topic, a subreddit, a text prompt or an ad hook.A template ID plus modifications (text, image and video URLs), or a full RenderScript JSON document.A JSON edit: tracks and clips on a timeline, or a template with merge fields.A movie JSON of scenes and elements (text, images, video, voice, subtitles), or a template.
Script and on-screen copyWritten by AutoFeed for the story formats (AI slideshows, Reddit-style stories, Would You Rather, Pick One, fake texts). You can pass your own brief.You write it, or an earlier step in your pipeline does.You write it.You write it.
Images and footageGenerated for you: AI images in 7 styles, gameplay backgrounds, 28 AI video models and UGC avatar clips. UGC ads can include your own demo footage.Your media URLs. AI images through OpenAI or Stability, using your own provider keys, per their docs.Your media URLs, plus AI images and video clips generated during the render, charged per model (for example 0.5 credits for a 1K image).Your media URLs. Per their pricing FAQ, there is no native AI image or AI video generation.
VoiceoverIncluded in the video price, 39 narration languages.Text-to-speech through ElevenLabs or OpenAI, using your own provider keys, per their docs.AI voice charged per model (ElevenLabs: 0.3 credits, 6 cents, per 1,000 characters).Included: Azure text-to-speech by default, ElevenLabs optional (your own key optional), per their docs.
What comes backA finished MP4 with voiceover, word-timed captions and music where the format has them, delivered by a signed webhook. YouTube Clips returns several clips.Your template rendered as a video or image.Your edit, rendered.An MP4 of your scenes.
Output resolution1080p: 1080x1920 vertical, 1920x1080 horizontal or 1280x1280 square, depending on the type.Set by your template. Credit cost depends on resolution, frame rate and length, per their docs.1080p on Pay as you go and Starter, 4K from Pro.Up to 4K at the same credit price, per their pricing FAQ.
Billing unitCredits per finished video, quoted in the 202 response before work starts. An AI slideshow of 45 to 60 seconds costs 1,200 credits (about $1.66 on Ultimate).Credits: about 14 per minute of 720p video at 25 fps, and 1 per image, per their pricing FAQ.Rendered minutes, counted by the second: 20 cents a minute pay as you go, down to 5 cents on Volume. AI generation is charged on top, per model.1 credit per second of rendered video.
Lowest paid price$249/mo (Ultimate, 180k credits a month). Hobby and Pro do not include the API.$54/mo, or $45/mo billed annually (Essential, 2,000 credits, "200+ videos").$10 once for 50 minutes, or $39/mo (Starter, 250 minutes).$49.95 one-time for 7,200 credits (up to 120 minutes), or Hobby at $199.50/yr ($16.63/mo).
Free tierNone for the API. It needs an Ultimate plan.50 credits, no card needed.10 credits on signup, plus a free sandbox.600 credits, no card needed, watermarked.
File retention14 days, then deleted.30 days, then deleted.Not listed on their pricing page.Not listed on their pricing page.
Rate limit20 creates and 120 reads per minute, per account.30 requests per 10 seconds per account, per their docs.Not listed on their pricing page.Not listed on their pricing page.
ToolingREST with bearer keys, an OpenAPI 3.1 spec, a Postman collection, idempotency keys and HMAC-signed webhooks.REST API, Zapier, Make, Pabbly and n8n integrations, and an embeddable JS Preview SDK (from Growth).REST API, SDKs for Node.js, Python, PHP and Ruby, and Make, Zapier and n8n on every plan.REST API, SDKs and component libraries, and Make, n8n and Zapier.
Template editorNo. You pick a format and its settings; there is no layout or timeline editor.Yes: a Template Editor, plus the Preview SDK for your own app.Yes: a Studio editor and a white-label editor SDK.Yes: a visual editor and templates.

Detailed Comparisons

Video API Questions

What is the difference between a video editing API and a video generation API?

An editing or rendering API assembles media you give it according to a template or timeline. A generation API creates the content: the script, the visuals and the voice. Creatomate, Shotstack and JSON2Video are rendering APIs with some AI add-ons; AutoFeed generates the whole video.

Which API is cheapest?

For rendering alone, the per-minute and per-second rendering APIs are cheaper, because they do less of the work. Once you add a script, images and a voice, compare the total per finished video. AutoFeed quotes that total in every 202 response before any work starts.

Does AutoFeed include text-to-video models?

Yes. The ai_video type gives access to 28 AI video models through the same endpoint, priced in the same credits as every other type.

Which plan includes the AutoFeed API?

The API is included with Ultimate at $249/mo for 180k credits a month, with bigger Ultimate sizes for more volume. At that price an AI slideshow of 45 to 60 seconds costs about $1.66, so the base plan covers about 150 of them a month. The same credits pay for dashboard videos and autoposting.

Where do these competitor prices come from?

From each vendor's official pricing page and docs, read on November 2, 2026. Where a number is not on those pages, the table says so. Check the vendor's site before you buy, since prices change.

Try the Full-Video API

Read the reference and the OpenAPI spec, then create a key on Ultimate.