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

Flexible usage tiers up to 1M+ assets per month. Caption thousands by parallelizing API calls.

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

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

Supported Formats

GLB

GLTF

OBJ

FBX

PLY

STL

USDZ

OFF

ZIP

PNG

JPG

TIFF

WEBP

PSD

SVG

BMP

MP4

AVI

WMV

MOV

MKV

MPEG

WEBM

Outputs

NodeJs

Serverless

Ruby

Python

PHP

Java

Elixir

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

Technology

	Loci Auto Caption	CONVENTIONAL ALTERNATIVES
accuracy	96%+	40-70%
speed	1M+ per month (can be parallelized)	Variable
security	Cloud and on-premises deployments	Data used to train 3rd party models
support	GLB, GLTF, OBJ, FBX, BLEND, PLY, STL, USDZ, OFF, ZIP	Less supported formats

Capabilities

OUR INFRASTRUCTURE

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

Best for

CLOUD INFRASTRUCTURE

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

Best for

YOUR INFRASTRUCTURE

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

Best for

Why teams choose Auto Caption