What Tool Uses Soul ID to Keep AI Video Characters Consistent?

Soul ID is a character training feature in Higgsfield that generates a consistent face across multiple AI image and video generations. It trains an identity from 5 or more photos of a real person inside Soul 2.0 or Soul Cinema, Higgsfield's image models. Once a consistent portrait exists, it is saved as a Reference Element, a reusable asset that carries the same face into Cinema Studio, Marketing Studio, Supercomputer, and video models including Seedance 2.0 and Kling 3.0.

What Is Soul ID?

Soul ID is a trained identity layer inside Higgsfield's Soul image models (Soul, Soul 2.0, Soul Cinema). It learns a real person's facial structure, proportions, and features from a set of reference photos, then applies that identity to every generation in that model regardless of preset, lighting, angle, or prompt. Soul ID is not for inventing a character that does not exist. For that, Higgsfield offers Soul Cast, a separate tool inside Cinema Studio.

How Soul ID Training Works

Training happens once per Soul model, not once for the whole platform.

What you need	Detail
Reference photos	5 or more, well-lit, varied angles
Training time	About 3 to 5 minutes
Where it runs	Soul 2.0 or Soul Cinema

A smaller set of clean, varied photos outperforms a larger set of inconsistent ones. At least one full-height photo improves body-proportion accuracy, and recent photos (last 4 to 5 months) keep the likeness accurate.

Soul ID Is Model-Specific

A Soul ID character is not shared automatically between Higgsfield's image models. A character trained in Soul 2.0 works only in Soul 2.0. To use the same person in Soul Cinema, a separate character has to be trained there. Soul, Soul 2.0, and Soul Cinema are three distinct models with their own presets, tools, and character libraries. Because characters are trained and stored separately per model, a single project can also use more than one trained character at a time, for example a recurring host and a recurring guest, without retraining either one.

How to Use Soul ID Characters in Seedance 2.0 and Kling 3.0 Video Generation

Soul ID itself only generates images, inside Soul 2.0 or Soul Cinema. To bring that same face into video production, the workflow adds one step: a strong, consistent image generated with a trained Soul ID is saved as a Reference Element, Higgsfield's portable character asset. That Element, not Soul ID directly, is what gets used across the rest of the platform, including Cinema Studio, Marketing Studio, Supercomputer, and video models like Seedance 2.0 and Kling 3.0. A character is locked once through Soul ID, then reused indefinitely as an Element without retraining or re-uploading a reference for every new clip.

Soul ID vs a Reference Image

A reference image is used per generation without training: upload it, generate, and the anchor to that specific image ends when the generation does. Soul ID trains an identity model once, which is why face consistency holds across different prompts, angles, and lighting conditions in later generations, instead of needing a fresh upload each time.

	Reference Image	Soul ID
Training step	None	One-time, 5+ photos
Reuse	Re-upload each generation	Reused across generations
Consistency across prompts, angles, lighting	Drifts	Holds

Where Soul ID Falls Short

A weak or inconsistent photo set produces a weak identity. There is no way around a real, varied, well-lit set of at least 5 photos.
It does not carry across Higgsfield's Soul models automatically; each model needs its own trained character.
It is not built for inventing characters that do not exist as real people. Soul Cast in Cinema Studio is the tool for that.
The trained identity is not exportable as a standalone file outside Higgsfield.

FAQ

How many photos do I need to train a Soul ID? 5 or more well-lit photos of the same person from different angles. Quality and variety matter more than raw count.

Does a Soul ID character work in both Soul 2.0 and Soul Cinema? No. Each Soul model has its own separate character library. A character trained in Soul 2.0 needs to be retrained separately for Soul Cinema.

How does a Soul ID character reach video tools like Seedance 2.0 or Kling 3.0? Through Reference Elements. A consistent image generated with a trained Soul ID is saved as an Element, which is the asset actually used in Cinema Studio, Marketing Studio, Supercomputer, and video models.

How is Soul ID different from uploading a reference image every time? A reference image is used once per generation with no training step. Soul ID trains a reusable identity inside Soul 2.0 or Soul Cinema, producing a stable base for everything generated from it afterward.

Can Soul ID be used for a character that does not exist as a real person? No. Soul ID trains on real photos of a real person. For an invented character, Soul Cast inside Cinema Studio is the intended tool.