Use the InfiniteTalk API via RunAPI with a model skill, unified auth, and pay-as-you-go pricing.
curl -X POST https://runapi.ai/api/v1/infinitetalk/audio_to_video \
-H "Authorization: Bearer $RUNAPI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "infinitetalk-from-audio",
"image_url": "https://cdn.runapi.ai/public/samples/portrait.jpg",
"audio_url": "https://cdn.runapi.ai/public/samples/voice.mp3"
}'import { InfinitetalkClient } from "@runapi.ai/infinitetalk";
const client = new InfinitetalkClient();
const result = await client.audioToVideo.run({
model: "infinitetalk-from-audio",
image_url: "https://cdn.runapi.ai/public/samples/portrait.jpg",
audio_url: "https://cdn.runapi.ai/public/samples/voice.mp3",
});<?php
require __DIR__ . "/vendor/autoload.php";
use RunApi\Infinitetalk\InfinitetalkClient;
$client = new InfinitetalkClient();
$result = $client->audioToVideo->run([
'model' => 'infinitetalk-from-audio',
'image_url' => 'https://cdn.runapi.ai/public/samples/portrait.jpg',
'audio_url' => 'https://cdn.runapi.ai/public/samples/voice.mp3',
]);require "runapi/infinitetalk"
client = RunApi::Infinitetalk::Client.new
result = client.audio_to_video.run(
model: "infinitetalk-from-audio",
image_url: "https://cdn.runapi.ai/public/samples/portrait.jpg",
audio_url: "https://cdn.runapi.ai/public/samples/voice.mp3"
)npx skills add runapi-ai/infinitetalk -g# Claude Code
claude mcp add runapi -s user -- npx -y @runapi.ai/mcp
# Codex
codex plugin install runapi-mcp@agents
# Cursor / Windsurf / VS Code
npx @runapi.ai/mcp init cursorInfiniteTalk is MeiGen-AI's audio-driven talking head animation model that generates lip-synced facial animations from an audio input and a reference image. It produces natural head movements and expressions synchronized to speech.
| Model ID | infinitetalk-from-audio |
| Provider | MeiGen-AI |
| Modality | video |
| Task type | asynchronous |
| Billing unit | second |
| API endpoint | /api/v1/infinitetalk/audio_to_video |
| Commercial license | Yes — included via API |
| Catalog status | Operational |
Sign up and generate an API key from the dashboard.
Choose the version that best matches your quality and cost requirements.
Submit your prompt and parameters to the model's documented endpoint.
Poll the task or set a webhook, then download the completed output.
InfiniteTalk is MeiGen-AI's audio-driven avatar model, generating lip-synced animation from a portrait and audio input. Through RunAPI, it shares unified API access and billing.
A single RunAPI API key unlocks the whole model catalog across all providers. No separate accounts to create, no API keys to rotate per integration, and no credential management overhead. Add a new model to your app by changing one parameter.
Per-call pricing in USD, billed monthly into a single invoice. No subscription tiers, no minimum spend, and failed generations are never charged. The pricing page and check_pricing API show exact costs before you commit to a model.
Typed schemas, parameter constraints, and setup notes are packaged in the model skill so your implementation starts from the right contract. The skill loads into Claude Code, Codex, Gemini CLI, Cursor, and VS Code — your agent knows the correct request shape before you write a line of code.
A portrait image (face clearly visible) and an audio file. The model generates a video of the portrait speaking the audio with lip sync.
InfiniteTalk produces frame-accurate lip sync matched to the input audio, with natural mouth shapes for speech sounds.
Yes — the model generates natural head movement, eyebrow expressions, and subtle facial micro-expressions synchronized with speech patterns.
MP3, WAV, AAC, MP4, and OGG are supported formats. The audio drives both lip sync timing and expression intensity.
InfiniteTalk supports generating long-form talking head video — the output length matches the input audio duration.
Pick the cheapest variant that meets your quality bar. Most teams start on the fast variant and graduate to pro for production.