Auto Caption

Generate a caption for any asset.


    {
        "file_name": "scan.usdz",
        "caption": "A 3D scan of a mossy tree stump."
    }
    
Product

Auto Caption describes complex assets with rich, semantic text—perfect for search and gen-AI datasets.

Our Edge

Why teams choose Auto Caption

0.6 seconds per asset icon

0.6 seconds per asset

Caption an asset in less than a second. Caption thousands by parallelizing API calls.

Semantic captions icon

Semantic captions

Auto Caption describes assets with natural, familiar terms, so search always works.

Enterprise-grade security icon

Enterprise-grade security

SOC-2 certified (pending) and available to deploy via the cloud or on-premises.

Supported Formats

Input any 3D or 2D file type.

Learn more about supported formats →
Supported formats illustration

3D files

GLB
GLTF
OBJ
FBX
PLY
STL
USDZ
OFF
ZIP
Supported formats illustration

2D textures and skyboxes

PNG
JPG
TIFF
WEBP
PSD
SVG
BMP
Supported formats illustration

Video

MP4
AVI
WMV
MOV
MKV
MPEG
WEBM
Outputs

Output into platform-agnostic JSON

NodeJs logo

NodeJs

Serverless logo

Serverless

Ruby logo

Ruby

Python logo

Python

PHP logo

PHP

Go logo

Go

Java logo

Java

Elixir logo

Elixir

Rest logo

Rest

REQUEST

fetch("https://loci-api.com/3d/auto-caption", {
  body: asset,
  method: "POST"
})
RESPONSE

    {
      "filename": "californiaave.usdz",
      "caption": "A 3D scan of a sculptural, abstract fountain in a sunny park.",
    }
Integrations

Limitless ways to integrate captions into your platform.

Example integrations illustration
Technology
Industry-leading accuracy and speed.
Loci Auto CaptionCONVENTIONAL ALTERNATIVES
accuracy96%+40-70%
speed0.6s per asset (can be parallelized)8s per asset
securityCloud and on-premises deploymentsData used to train 3rd party models
supportGLB, GLTF, OBJ, FBX, BLEND, PLY, STL, USDZ, OFF, ZIPLess supported formats
Capabilities
Tailor your deployment to your security needs.
OUR INFRASTRUCTURE Icon
OUR INFRASTRUCTURE

SaaS

Start tagging assets instantly with Loci's blazing fast API. No backend infrastructure management needed.

Best for
  • Small to medium-sized businesses
  • Experimenting with our models
  • Non-sensitive data
CLOUD INFRASTRUCTURE Icon
CLOUD INFRASTRUCTURE

Cloud Platform

Access the Loci platform through a Dockerfile compatible with AWS, Azure, and more.

Best for
  • Organizations seeking easy integration with cloud services
  • Handling sensitive intellectual property
YOUR INFRASTRUCTURE Icon
YOUR INFRASTRUCTURE

Private Deployment

Securely bring Loci's models into your own infrastructure to protect sensitive data.

Best for
  • Organizations with strict security needs
  • Maximum control and customization
  • Handling sensitive intellectual property

Generate captions for your 3D catalog.