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Model infoModelsSnapshot: 15 Oct 2026

Hi3D / Hitem3D / Hi3D

Hi3D 1.5

Hi3D 1.5 generates textured 3D assets from one image or multiple views. Supported generation stages and resolution settings vary by version.

3D generation
availableClosed weights3D generation
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
19 of 34 specification fields collected
3D output formatsOBJ, GLB, STL, FBX, USDZ, 3MFSee specification notes below
Text input limitNot collectedAwaiting source review
Input billingSee ratesHi3D native API · geometry and texture
Output billingSee ratesPublished units and conditions below

Specifications

Provider-documented facts. “Not collected” means we have not verified that field yet, not that the feature is unsupported.

Context / input limit
Not collected
Maximum input tokens
Not collected
Maximum output
Not collected
Reasoning
Not collected
Tool calling
Not collected
Structured output
Not collected

Task JSON is not caller-defined structured model output.

Streaming
Not collected

Task polling and callbacks are documented; no progressive model-output stream verified.

Batch processing
Not supportedSource for Batch processing (opens in a new tab)

Each call creates one task; no batch-generation operation is documented.

Fine-tuning
Not collected

No customer weight fine-tuning contract documented.

Knowledge cutoff
Not collected
Release date
Not collected

Original model release date not established by later API documentation.

Parameters
Not collected
Architecture
Not collected
Languages
Not collected
Context caching
Not collected

No prompt-cache controls, eligibility or rates documented.

Authentication
POST /open-api/v1/auth/token with Basic base64(client_id:client_secret), then use the returned accessToken as Bearer authorization for tasks.Source for Authentication (opens in a new tab)

Token expiry is not documented in this contract. Sample credentials are not used.

Request quotas
Default 30 concurrent tasks; higher concurrency by arrangement.Source for Request quotas (opens in a new tab)

Not a requests-per-second quota.

Asynchronous generation
SupportedSource for Asynchronous generation (opens in a new tab)

Poll or receive completion/failure callbacks. This is not streamed geometry.

Data retention
Not collected

No numeric asset/log retention period established. A one-hour download URL does not imply one-hour data deletion.

Task refunds
Server faults, timeouts and parameter-validation failures are refunded or not charged; FAQ identifies a 60-minute timeout threshold.Source for Task refunds (opens in a new tab)
Input modalities
ImageSource for Input modalities (opens in a new tab)
Output modalities
3D meshSource for Output modalities (opens in a new tab)
Usage metering
USD per task, derived from the explicit provider credit price. Geometry, texture and PBR charges depend on model and settings.Source for Usage metering (opens in a new tab)
Input image formats
PNG, JPEG, JPG, WebPSource for Input image formats (opens in a new tab)
Maximum input content size
20,000,000Source for Maximum input content size (opens in a new tab)

20 MB per image; decimal byte conversion.

Image input limits
One image, or 2–4 views with a required front view. Each file at most 20 MB.Source for Image input limits (opens in a new tab)
Reference images
Multi-view order: front, back, left, right. Optional four-bit multi_images_bit indicates which views are supplied.Source for Reference images (opens in a new tab)
Geometry resolution
512, 1024, 1536, 1536proSource for Geometry resolution (opens in a new tab)

Geometry resolution setting; not texture dimensions.

Mesh topology and face count
Requested face count 100,000–5,000,000; recommended count depends on resolution.Source for Mesh topology and face count (opens in a new tab)

The older error table still says 100,000–2,000,000. Current request schema and FAQ agree on the wider range; no inference was run.

Output formats
OBJ, GLB, STL, FBX, USDZ, 3MFSource for Output formats (opens in a new tab)

Select exactly one; default OBJ.

PBR materials
Not supportedSource for PBR materials (opens in a new tab)

v1.5 pricing explicitly states no PBR support.

Standalone texturing
SupportedSource for Standalone texturing (opens in a new tab)

GLB geometry and reference image(s) required for request_type=2.

Output transport
Task ID, then query-task result and cover URLs valid for one hour.Source for Output transport (opens in a new tab)

URL validity is not underlying data retention.

Input image enhancement
Background removal defaults on. De-shading is only documented for v2.0, v2.1 and v3.0.Source for Input image enhancement (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.

Hi3D native API · geometry and texture

Provider source (opens in a new tab)
API model ID
hitem3dv1.5

Service model selection, not an immutable checkpoint hash.

Access
POST https://api.hitem3d.ai/open-api/v1/submit-task using multipart/form-data and a Bearer access token.
Regions
Processing region not verified
Authentication
POST /open-api/v1/auth/token with Basic base64(client_id:client_secret), then use the returned accessToken as Bearer authorization for tasks.Source for Authentication (opens in a new tab)

Token expiry is not documented in this contract. Sample credentials are not used.

Request quotas
Default 30 concurrent tasks; higher concurrency by arrangement.Source for Request quotas (opens in a new tab)

Not a requests-per-second quota.

Asynchronous generation
SupportedSource for Asynchronous generation (opens in a new tab)

Poll or receive completion/failure callbacks. This is not streamed geometry.

Batch processing
Not supportedSource for Batch processing (opens in a new tab)

Each call creates one task; no batch-generation operation is documented.

Task refunds
Server faults, timeouts and parameter-validation failures are refunded or not charged; FAQ identifies a 60-minute timeout threshold.Source for Task refunds (opens in a new tab)
Input modalities
ImageSource for Input modalities (opens in a new tab)
Output modalities
3D meshSource for Output modalities (opens in a new tab)
Input image formats
PNG, JPEG, JPG, WebPSource for Input image formats (opens in a new tab)
Maximum input content size
20,000,000Source for Maximum input content size (opens in a new tab)

20 MB per image; decimal byte conversion.

Image input limits
One image, or 2–4 views with a required front view. Each file at most 20 MB.Source for Image input limits (opens in a new tab)
Reference images
Multi-view order: front, back, left, right. Optional four-bit multi_images_bit indicates which views are supplied.Source for Reference images (opens in a new tab)
Geometry resolution
512, 1024, 1536, 1536proSource for Geometry resolution (opens in a new tab)

Geometry resolution setting; not texture dimensions.

Mesh topology and face count
Requested face count 100,000–5,000,000; recommended count depends on resolution.Source for Mesh topology and face count (opens in a new tab)

The older error table still says 100,000–2,000,000. Current request schema and FAQ agree on the wider range; no inference was run.

Output formats
OBJ, GLB, STL, FBX, USDZ, 3MFSource for Output formats (opens in a new tab)

Select exactly one; default OBJ.

PBR materials
Not supportedSource for PBR materials (opens in a new tab)

v1.5 pricing explicitly states no PBR support.

Standalone texturing
SupportedSource for Standalone texturing (opens in a new tab)

GLB geometry and reference image(s) required for request_type=2.

Output transport
Task ID, then query-task result and cover URLs valid for one hour.Source for Output transport (opens in a new tab)

URL validity is not underlying data retention.

Input image enhancement
Background removal defaults on. De-shading is only documented for v2.0, v2.1 and v3.0.Source for Input image enhancement (opens in a new tab)
Required request fields
model=hitem3dv1.5, request_type=3, and exactly one of images or multi_images.Source for Required request fields (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
3D generationGeometry + texture · 5121$0.30request
3D generationGeometry + texture · 10242$0.40request
3D generationGeometry + texture · 15363$0.60request
3D generationGeometry + texture · 1536pro4$0.80request

Rate conditions

  1. 15 provider credits at the published USD 0.020 per credit. Complete task rate; PBR disabled or unsupported.
  2. 20 provider credits at the published USD 0.020 per credit. Complete task rate; PBR disabled or unsupported.
  3. 30 provider credits at the published USD 0.020 per credit. Complete task rate; PBR disabled or unsupported.
  4. 40 provider credits at the published USD 0.020 per credit. Complete task rate; PBR disabled or unsupported.
Pricing source (opens in a new tab)

Data & enterprise terms

Published terms permit use of inputs/outputs to operate the service and improve models, including training. A no-training or zero-retention agreement is not established. Download-link expiry is separate from data retention.

Read the service policy (opens in a new tab)

Hi3D native API · geometry only

Provider source (opens in a new tab)
API model ID
hitem3dv1.5

Service model selection, not an immutable checkpoint hash.

Access
POST https://api.hitem3d.ai/open-api/v1/submit-task using multipart/form-data and a Bearer access token.
Regions
Processing region not verified
Authentication
POST /open-api/v1/auth/token with Basic base64(client_id:client_secret), then use the returned accessToken as Bearer authorization for tasks.Source for Authentication (opens in a new tab)

Token expiry is not documented in this contract. Sample credentials are not used.

Request quotas
Default 30 concurrent tasks; higher concurrency by arrangement.Source for Request quotas (opens in a new tab)

Not a requests-per-second quota.

Asynchronous generation
SupportedSource for Asynchronous generation (opens in a new tab)

Poll or receive completion/failure callbacks. This is not streamed geometry.

Batch processing
Not supportedSource for Batch processing (opens in a new tab)

Each call creates one task; no batch-generation operation is documented.

Task refunds
Server faults, timeouts and parameter-validation failures are refunded or not charged; FAQ identifies a 60-minute timeout threshold.Source for Task refunds (opens in a new tab)
Input modalities
ImageSource for Input modalities (opens in a new tab)
Output modalities
3D meshSource for Output modalities (opens in a new tab)
Input image formats
PNG, JPEG, JPG, WebPSource for Input image formats (opens in a new tab)
Maximum input content size
20,000,000Source for Maximum input content size (opens in a new tab)

20 MB per image; decimal byte conversion.

Image input limits
One image, or 2–4 views with a required front view. Each file at most 20 MB.Source for Image input limits (opens in a new tab)
Reference images
Multi-view order: front, back, left, right. Optional four-bit multi_images_bit indicates which views are supplied.Source for Reference images (opens in a new tab)
Geometry resolution
512, 1024, 1536, 1536proSource for Geometry resolution (opens in a new tab)

Geometry resolution setting; not texture dimensions.

Mesh topology and face count
Requested face count 100,000–5,000,000; recommended count depends on resolution.Source for Mesh topology and face count (opens in a new tab)

The older error table still says 100,000–2,000,000. Current request schema and FAQ agree on the wider range; no inference was run.

Output formats
OBJ, GLB, STL, FBX, USDZ, 3MFSource for Output formats (opens in a new tab)

Select exactly one; default OBJ.

PBR materials
Not supportedSource for PBR materials (opens in a new tab)

v1.5 pricing explicitly states no PBR support.

Standalone texturing
SupportedSource for Standalone texturing (opens in a new tab)

GLB geometry and reference image(s) required for request_type=2.

Output transport
Task ID, then query-task result and cover URLs valid for one hour.Source for Output transport (opens in a new tab)

URL validity is not underlying data retention.

Input image enhancement
Background removal defaults on. De-shading is only documented for v2.0, v2.1 and v3.0.Source for Input image enhancement (opens in a new tab)
Required request fields
model=hitem3dv1.5, request_type=1, and exactly one of images or multi_images.Source for Required request fields (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
3D generationGeometry · 5121$0.10request
3D generationGeometry · 10242$0.20request
3D generationGeometry · 15363$0.40request
3D generationGeometry · 1536pro4$0.60request

Rate conditions

  1. 5 provider credits at the published USD 0.020 per credit. Geometry only; texture and PBR not included.
  2. 10 provider credits at the published USD 0.020 per credit. Geometry only; texture and PBR not included.
  3. 20 provider credits at the published USD 0.020 per credit. Geometry only; texture and PBR not included.
  4. 30 provider credits at the published USD 0.020 per credit. Geometry only; texture and PBR not included.
Pricing source (opens in a new tab)

Data & enterprise terms

Published terms permit use of inputs/outputs to operate the service and improve models, including training. A no-training or zero-retention agreement is not established. Download-link expiry is separate from data retention.

Read the service policy (opens in a new tab)

Hi3D native API · texture only

Provider source (opens in a new tab)
API model ID
hitem3dv1.5

Service model selection, not an immutable checkpoint hash.

Access
POST https://api.hitem3d.ai/open-api/v1/submit-task using multipart/form-data and a Bearer access token. request_type=2; GLB geometry plus reference images required.
Regions
Processing region not verified
Authentication
POST /open-api/v1/auth/token with Basic base64(client_id:client_secret), then use the returned accessToken as Bearer authorization for tasks.Source for Authentication (opens in a new tab)

Token expiry is not documented in this contract. Sample credentials are not used.

Request quotas
Default 30 concurrent tasks; higher concurrency by arrangement.Source for Request quotas (opens in a new tab)

Not a requests-per-second quota.

Asynchronous generation
SupportedSource for Asynchronous generation (opens in a new tab)

Poll or receive completion/failure callbacks. This is not streamed geometry.

Batch processing
Not supportedSource for Batch processing (opens in a new tab)

Each call creates one task; no batch-generation operation is documented.

Task refunds
Server faults, timeouts and parameter-validation failures are refunded or not charged; FAQ identifies a 60-minute timeout threshold.Source for Task refunds (opens in a new tab)
Input modalities
ImageSource for Input modalities (opens in a new tab)
Output modalities
3D meshSource for Output modalities (opens in a new tab)
Input image formats
PNG, JPEG, JPG, WebPSource for Input image formats (opens in a new tab)
Maximum input content size
20,000,000Source for Maximum input content size (opens in a new tab)

20 MB per image; decimal byte conversion.

Image input limits
One image, or 2–4 views with a required front view. Each file at most 20 MB.Source for Image input limits (opens in a new tab)
Reference images
Multi-view order: front, back, left, right. Optional four-bit multi_images_bit indicates which views are supplied.Source for Reference images (opens in a new tab)
Geometry resolution
512, 1024, 1536, 1536proSource for Geometry resolution (opens in a new tab)

Geometry resolution setting; not texture dimensions.

Mesh topology and face count
Requested face count 100,000–5,000,000; recommended count depends on resolution.Source for Mesh topology and face count (opens in a new tab)

The older error table still says 100,000–2,000,000. Current request schema and FAQ agree on the wider range; no inference was run.

Output formats
OBJ, GLB, STL, FBX, USDZ, 3MFSource for Output formats (opens in a new tab)

Select exactly one; default OBJ.

PBR materials
Not supportedSource for PBR materials (opens in a new tab)

v1.5 pricing explicitly states no PBR support.

Standalone texturing
SupportedSource for Standalone texturing (opens in a new tab)

GLB geometry and reference image(s) required for request_type=2.

Output transport
Task ID, then query-task result and cover URLs valid for one hour.Source for Output transport (opens in a new tab)

URL validity is not underlying data retention.

Input image enhancement
Background removal defaults on. De-shading is only documented for v2.0, v2.1 and v3.0.Source for Input image enhancement (opens in a new tab)
Required request fields
model=hitem3dv1.5, request_type=2, and exactly one of images or multi_images. Also provide exactly one of mesh or mesh_url (GLB only).Source for Required request fields (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
3D generationTexture only1$0.20request

Rate conditions

  1. 10 provider credits at the published USD 0.020 per credit. PBR disabled or unsupported. Existing geometry; not a geometry-generation charge.
Pricing source (opens in a new tab)

Data & enterprise terms

Published terms permit use of inputs/outputs to operate the service and improve models, including training. A no-training or zero-retention agreement is not established. Download-link expiry is separate from data retention.

Read the service policy (opens in a new tab)

Caching

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.

Hi3D native API · geometry and texture

hitem3dv1.5
Not verified

No prompt-caching contract or discounted cached-input rate documented.

How it works
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Minimum reusable input
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Lifetime & refresh
Not collected

No prompt-caching contract or discounted cached-input rate documented.

How to enable it
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Usage fields
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Billing rules
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Limits & data boundaries
Not collected

No prompt-caching contract or discounted cached-input rate documented.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Hi3D native API · geometry only

hitem3dv1.5
Not verified

No prompt-caching contract or discounted cached-input rate documented.

How it works
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Minimum reusable input
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Lifetime & refresh
Not collected

No prompt-caching contract or discounted cached-input rate documented.

How to enable it
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Usage fields
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Billing rules
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Limits & data boundaries
Not collected

No prompt-caching contract or discounted cached-input rate documented.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Hi3D native API · texture only

hitem3dv1.5
Not verified

No prompt-caching contract or discounted cached-input rate documented.

How it works
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Minimum reusable input
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Lifetime & refresh
Not collected

No prompt-caching contract or discounted cached-input rate documented.

How to enable it
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Usage fields
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Billing rules
Not collected

No prompt-caching contract or discounted cached-input rate documented.

Limits & data boundaries
Not collected

No prompt-caching contract or discounted cached-input rate documented.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 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

Qualified inference from provider-operated named model services and terms restricting reverse engineering/derivation. Reviewed official Hitem3D and Sparc3D repository trees do not expose corresponding checkpoint weights. Exact internal weight identities and per-model licenses are undisclosed; a public research paper or generated-asset license is not a weight release.

Classification evidence (opens in a new tab)

Sources reviewed

hi3d home (opens in a new tab)Reviewed 14 Oct 2026