Trains and manages reusable character references for Soul image generation. Returns a reference ID and processing status rather than a new foundation model.
Standalone Soul ID parameter table omits model_version; the Soul 2 integration guide supplies the field.
Custom model training
Asynchronous character-reference training; use the completed UUID in a compatible Soul generation. No downloadable weights or arbitrary base-model training interface established.Source for Custom model training (opens in a new tab)
Access & pricing
Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.
No exact API model selector established for this access path.
Access
Managed identity-reference service; account credentials, applicable likeness consent and protected-feature verification required. No training submitted.
Reference schema requires hf-api-key (UUID), lists hf-secret as optional, and examples send both. Soul 2 integration uses Authorization: Key KEY_ID:KEY_SECRET for the same reference paths.Source for Authentication (opens in a new tab)
Authentication documentation differs; no request was sent to verify interchangeability.
GET /v1/custom-references/list supports page=1 and page_size=20 defaults. DELETE /v1/custom-references/{reference_id} returns 204. The UUID is a reference ID, not a generation request ID.Source for Reference management (opens in a new tab)
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 15 Oct 2026
Category
Usage
Rate
Unit
Media generation
Soul ID training request1
$2.50
request
Rate conditions
Related-model catalog lists Soul ID at USD 2.50/request. This is not a fee for each subsequent generated image or each GET/DELETE call; version-specific price differences are not published in the reviewed table.
API content may be used for training unless the workspace opts out; processing can take 10 business days and is prospective. Enterprise agreements can differ. Request records remain while the account is active; generated files are available for at least seven days. Zero retention requires an eligible enterprise addendum. Partner/excluded-model policies can differ.
Caching can reuse earlier input processing. Availability, lifetime and billing depend on the endpoint. A cache hit still generates a new response.
01 / INITIAL INPUTProcess & retain
The system processes eligible input and retains reusable state.
02 / LATER REQUESTCheck available state
Reuse depends on matching input, session state and the cache policy.
03 / CACHE HITReuse & generate
Reusing state can reduce repeated work. Any charges follow the billing rules below.
Higgsfield API
Not verified
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
How it works
Not collected
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
Minimum reusable input
Not collected
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
Lifetime & refresh
Not collected
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
How to enable it
Not collected
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
Usage fields
Not collected
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
Billing rules
Not collected
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
Limits & data boundaries
Not collected
No prompt-cache contract or discount established. Reusing a request ID or trained identity is not inference caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Caching reviewed 15 Oct 2026
What the measurements say
No benchmark observations have been added for this model. We do not turn a vendor description into a performance score.
Latency and throughput depend on the host, request size, reasoning settings and load. There is no measured speed or global usage figure in this record.
The record behind the model
Why it is included
The provider documents custom-reference training and management as a hosted service. A reference ID is not a separately released foundation model or a downloadable checkpoint.
