Which avatar video makers have an API?
HeyGen, Synthesia, D-ID and Colossyan each document one. HeyGen's orchestrates avatars, voices, editing and music; Synthesia's makes avatar videos from scripts and templates; D-ID's covers talking avatars and translation; Colossyan's is a REST API for videos at scale. From 4 source pages, read 2026-09-25; no maker pays to be listed.
| Tool | Hook | What the documentation says |
|---|---|---|
| Colossyan | API | A REST API for generating avatar videos at scale |
| D-ID | API | Video APIs for talking avatars, video translation and digital presenters |
| HeyGen | API | A video API that orchestrates avatars, voices, editing and music |
| Synthesia | API | A video API for creating avatar videos from scripts and templates |
Inclusion rule. A tool is listed when its own documentation states what the question asks. Order. Tools in alphabetical order.
Avatar video suits APIs well: the inputs are a script and a presenter, both easy to send from code.
Three of the four document an MCP server as well, and all four say how a finished video is signalled, by webhook, callback or polling.
HeyGen and Synthesia are also the two avatar tools on the register that name MP4 as the file handed back.
1In the documentation's words
Colossyan
Colossyan's API offers a programmable video creation service.
Colossyan, API documentation
D-ID
all through simple API calls
D-ID, developer documentation: quickstart
HeyGen
The video you imagine, delivered into your system.
HeyGen, developer site
Synthesia
explore the Synthesia API, and create engaging, effective synthetic videos
Synthesia, developer documentation
- WelcomeA REST API for generating avatar videos at scale
- Getting startedVideo APIs for talking avatars, video translation and digital presenters
- Page headerA video API that orchestrates avatars, voices, editing and music
- Page headerA video API for creating avatar videos from scripts and templates
Public API for every tool · Which APIs reach many companies' video models? · Which AI video tools have a public API?
2Where a drama generator fits
Read against “Which avatar video makers have an API?”, this is how SceneMixer describes the matching stage of its own pipeline:
An AI short drama is a serialized show of 60–120 second vertical episodes whose cast, sets and footage are generated by AI. Making one takes six steps: analyze the script into episodes, lock a consistent cast with reference art, localize for your market, write and edit storyboards, generate each 4–15 second shot, then composite and publish.
SceneMixer, How to Make an AI Short Drama, Step by Step (read 2026-10-13)
The same face across an entire series is the design target and what the reference-sheet architecture delivers for the cast in your asset library.
SceneMixer, AI Video Generator With Consistent Characters — “How consistent is it, really?” (read 2026-10-13)