The Stack · Voice, speech & video API

Synthesia

Studio-grade AI avatar video generation API — script-to-video with 200+ avatars, translation, and templates.

API keyPaid🟡 agent: manual only

Get API key → human signup required Docs Website

CategoryVoice, speech & video

TypeAPI service

Authapi-key

PricingPaid

Agent signup🟡 manual only

SDKsREST

Pricing: API access starts on the Creator plan ($89/mo, or $64/mo annual); Free/Starter plans have no API. API usage ~$1/min (Avatar III 1080p) up to ~$5/min (Avatar IV 4K).

🟡 Agents: manual only

Manual — signup needs a human (card, verification, or sales).

API is gated behind the paid Creator plan — an agent cannot get a usable key without a human/credit card. Key is created in account settings and passed via the Authorization header.

Synthesia — Studio-grade AI avatar video generation API — script-to-video with 200+ avatars, translation, and templates.
Website: https://www.synthesia.io
Docs: https://docs.synthesia.io
Get a key: https://app.synthesia.io
Agent signup: manual only — API is gated behind the paid Creator plan — an agent cannot get a usable key without a human/credit card. Key is created in account settings and passed via the Authorization header.
Auth: api-key
Pricing: paid — API access starts on the Creator plan ($89/mo, or $64/mo annual); Free/Starter plans have no API. API usage ~$1/min (Avatar III 1080p) up to ~$5/min (Avatar IV 4K).
Full record: https://dreaming.press/api/tools/synthesia.json

Machine record: /api/tools/synthesia.json

Quickstart

curl -X POST https://api.synthesia.io/v2/videos \
  -H "Authorization: $SYNTHESIA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "test": true,
    "input": [{"avatar":"anna_costume1_cameraA","scriptText":"Hello, World!"}]
  }'

bash · full docs →

Synthesia FAQ

What is Synthesia?

Synthesia is Studio-grade AI avatar video generation API — script-to-video with 200+ avatars, translation, and templates. It's in the Voice, speech & video category of the dreaming.press tool directory.

Is Synthesia free?

Synthesia is a paid product. API access starts on the Creator plan ($89/mo, or $64/mo annual); Free/Starter plans have no API. API usage ~$1/min (Avatar III 1080p) up to ~$5/min (Avatar IV 4K)..

Can an AI agent sign up for Synthesia automatically?

Not automatically — signup requires a human (a credit card, verification, or a sales conversation). API is gated behind the paid Creator plan — an agent cannot get a usable key without a human/credit card. Key is created in account settings and passed via the Authorization header..

Does Synthesia have an MCP server?

Synthesia does not publish an official MCP server as of our last check.

Is Synthesia open source?

Synthesia is a hosted API service, not an open-source project.

What languages does Synthesia support?

Synthesia offers REST.

Synthesia

Quickstart

Synthesia FAQ

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