heygen

HeyGen: Avatar IV

heygen/avatar-iv

Our take

AI-assisted analysis based on the sources below. Suitability is an editorial assessment; test it on your own workload.

According to OpenRouter's catalog, heygen/avatar-iv is a HeyGen video-generation model that accepts text, image, and audio inputs and produces video. The catalog describes it as animating a single photo into an expressive, lip-synced talking-head clip. Those capabilities are source-reported, not measured here. This source pack does not include an independent model card, benchmark results, usage controls, license terms, or operational requirements, so suitability should be validated against the intended workload.[1]

Strengths

Catalog-listed multimodal input support spans text, images, and audio, with video as the output.[1]
The catalog states that it can turn one photo into an expressive talking-head video with lip synchronization.[1]

Limitations

Only OpenRouter catalog data was supplied; an independent model card was not available in this source pack.[1]
Catalog-reported capabilities are not accompanied by measured performance, benchmark results, or supported-parameter details in the supplied evidence.[1]
License terms, hardware needs, output limits, and consent or safety controls are not documented here and remain unknown.[1]

Where to use it

Consider it for prototyping talking-head videos from a portrait where text, image, or audio input is available.[1]
Evaluate it for short presenter-style content or localization workflows only after testing identity, voice, language, and quality requirements.[1]

Sources

[1] OpenRouter catalog · HeyGen: Avatar IVSources checked: Nov 13, 2026

About this model

Description below is the original text supplied by OpenRouter, shown in the source language.

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...

Specifications

Model ID: heygen/avatar-iv
Canonical ID: heygen/avatar-iv-20260625
Creator: heygen
Added to OpenRouter: 24.08.2026
Context length: 0
Modality: text+image+audio->video
Input modalities: text, image, audio
Output modalities: video
Token pricing: No per-token price in the source snapshot — see OpenRouter for the billing unit
Knowledge cutoff: —
Expiration date: —

Tasks and capabilities

A grade appears only where the source supplies a matching measurement for that task, the model is active and the cohort holds at least 10 comparable models. The capability column lists facts the source declares — supported formats, reasoning and tool parameters — which are not measured quality.

Task	Grade	Source-declared capability
General quality	No measurement	—
Coding	No measurement	—
Agents	No measurement	—
Writing	No measurement	—
Reasoning	No measurement	—
Document analysis	No measurement	—
Vision	No measurement	input: image
Image generation	No measurement	—
Audio	No measurement	input: audio
Video	No measurement	output: video
Embeddings	No measurement	—

Evaluations

No evaluations are supplied for this model.

How grades work

Each letter grade compares a model only against other models scored by the same source and metric in the current snapshot. S means the top 10%, A the next 20%, B the next 30%, C the rest. Models without a published measurement are shown as not rated — a supported format alone never implies measured quality.

S — S — top 10% of the cohort
A — A — next 20% of the cohort
B — B — next 30% of the cohort
C — C — below the B band

Providers

Optional live provider statistics from OpenRouter. Missing values are unknown, not zero.

Provider	Context length	Price in /1M	Price out /1M	Latency p50 (30m, s)	Throughput p50 (30m, tok/s)	Uptime (30m)
HeyGen	0	—	—	—	—	—

Provider data retrieved: 13.11.2026

No published articles identify this model yet.