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HeyGen: Avatar IV

Source description (English)

HeyGen: Avatar IV is an image-to-video model that animates a single photo into an expressive, lip-synced talking-head video. Rather than only matching mouth shapes to words, it interprets the vocal...

Overview

Model specifications

Context
Not provided
Maximum output
Not provided
Architecture
text+image+audio->video
Tokenizer
Other
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Video output
$0.05
per second
API

Quick start

Set OPENROUTER_API_KEY locally. Python requires requests; JavaScript runs in Node.js. Keep the key on the server.

This creates a video job. Poll its status before downloading the completed video.

API documentation

curl --fail-with-body https://openrouter.ai/api/v1/videos \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"heygen/avatar-iv","prompt":"A slow camera move across a sunlit mountain landscape"}'

# Replace JOB_ID with the returned id to check progress.
curl --fail-with-body "https://openrouter.ai/api/v1/videos/JOB_ID" \
  -H "Authorization: Bearer $OPENROUTER_API_KEY"
Capabilities

InputOutput

Input
textimageaudio
Output
video
API

Supported API parameters

Available providers

1 Provider

Checked: September 7, 2026

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

HeyGen

Not provided
Context
Not provided
Maximum output
Not provided