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LightOnOCR-3-4B

LightOnOCR-3-4B is the largest model in the LightOnOCR-3 family, designed for OCR with layout and visual understanding. It transcribes document text and can produce labeled bounding boxes, image descriptions, and structured chart data.

What it does

Use it to transcribe documents and extract labeled visual regions, image descriptions, and chart data.

Availability
Model linked from the LightOnOCR-3 model card
Pricing model
Not established
Deployment
Transformers or vLLM usage instructions are provided for the model family
Privacy
Not established
Licence
Apache License 2.0 for research and commercial use
Capability
extractionanalysis
Modality
imagetext
Access
open weightsAPICLI
Deployment
on-premises
Pricing
unknown
Target user
developerresearcherenterprise

Evidence

11 claims
  • The model transcribes document text and supports a grounding mode that returns labels and bounding boxes. [1]
  • Visual understanding can produce short image descriptions and tables of chart data points. [1]
    Compared to the previous generation, they bring significant improvements in speed and transcription quality and introduce new visual understanding features: the models now output bounding box coordinates with labels for all visual elements of a document, short descriptions of images, and the numerical data of figures and charts.
    Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • The model checkpoint is available at lightonai/LightOnOCR-3-4B.
  • Usage is documented with Transformers and vLLM. [1]
    ## Usage with Transformers
    Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • The model is released under Apache License 2.0 for research and commercial use. [1]
    All models are released under the Apache 2.0 license for research and commercial use.
    Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • The 4B variant is described as the best OCR model and recommended for most tasks. [2]
    | **[LightOnOCR-3-4B](https://huggingface.co/lightonai/LightOnOCR-3-4B)** | Best OCR model, recommended for most tasks |
    Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights.
  • Grounding mode outputs labels and bounding boxes for document blocks.
  • Visual understanding mode provides short image descriptions and turns charts into tables of data points.
  • The LightOnOCR-3-4B model is linked from the model card.
  • The model family includes usage instructions for Transformers and vLLM.
  • The model family is released under Apache License 2.0 for research and commercial use. [2]
    All models are released under the Apache 2.0 license for research and commercial use.
    Hugging Face. Quoted text is outside CC BY 4.0 and keeps its original rights.

Sources

2
1
Hugging FaceOwner-controlled
https://huggingface.co/lightonai/LightOnOCR-3-4B Retrieved 2026-10-29 00:34 UTC
Verified
2
Hugging FaceOwner-controlled
https://huggingface.co/lightonai/LightOnOCR-3-1B Retrieved 2026-10-29 00:34 UTC
Verified

Versions

21
VersionEffectiveChangeChanged fieldsState
212026-10-29 00:34 UTCmaterial changeaccess, availability, deploymentCurrent
202026-10-27 00:19 UTCmaterial changeaccess, availability, deploymentCurrent
192026-10-25 22:24 UTCmaterial changeaccess, availability, deploymentCurrent
182026-10-24 23:18 UTCmaterial changeaccess, availability, deploymentCurrent
172026-10-24 00:08 UTCmaterial changeaccess, availability, deploymentCurrent
162026-10-22 09:01 UTCmaterial changeaccess, availability, deploymentCurrent
152026-10-21 10:01 UTCmaterial changeaccess, availability, deploymentCurrent
142026-10-20 10:59 UTCmaterial changeaccess, availability, deploymentCurrent
132026-10-19 11:49 UTCmaterial changeaccess, availability, deploymentCurrent
122026-10-18 12:47 UTCmaterial changeaccess, availability, deploymentCurrent
112026-10-17 13:39 UTCmaterial changeaccess, availability, deploymentCurrent
102026-10-16 14:32 UTCmaterial changeaccess, availability, deploymentCurrent
92026-10-15 15:25 UTCmaterial changeaccess, availability, deploymentCurrent
82026-10-14 16:15 UTCmaterial changeaccess, availability, deploymentCurrent
72026-10-13 17:05 UTCmaterial changeaccess, availability, deploymentCurrent
62026-10-12 18:03 UTCmaterial changeaccess, availability, deploymentCurrent
52026-10-11 18:57 UTCmaterial changeaccess, availability, deploymentCurrent
42026-10-10 19:52 UTCmaterial changeaccess, availability, deploymentCurrent
32026-10-09 20:45 UTCmaterial changecapability, modality, access, availability, deploymentCurrent
22026-10-09 20:45 UTCmaterial changecapability, modality, access, availability, deploymentCurrent
12026-10-08 21:36 UTCpublicationNoneCurrent

In briefs

1

Open in the catalog

Original catalog content is licensed under CC BY 4.0, attributed to wowsuchai. Source quotations and linked content keep their original rights.