# LightOnOCR-2-1B

**Summary:** LightOnOCR-2-1B is a compact 1B-parameter end-to-end multilingual vision-language model developed by LightOn. It converts document images (PDFs, scans, images) into clean, naturally ordered text, handling complex layouts including tables, multi-column documents, and scientific notation. It is accessible through the IONOS Cloud OpenAI-compatible API for production-ready OCR.

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## Central parameters

**Description:** 1B-parameter end-to-end vision-language model for document OCR. Converts PDFs, scans, and images into clean, naturally ordered Markdown text. Handles complex layouts including tables, multi-column documents, scientific notation with LaTeX, and scanned material. The model always outputs Markdown-formatted text; text prompts are accepted by the API but do not influence the output format.

**Model identifier:** `lightonai/LightOnOCR-2-1B`

## IONOS AI Model Hub Lifecycle and Alternatives

|   **IONOS Launch**  | **End of Life** | **Alternative** | **Successor** |
| :-----------------: | :-------------: | :-------------: | :-----------: |
| *February 23, 2026* |       N/A       |        —        |       —       |

## Origin

|                               **Provider**                              | **Country** |                                             **License**                                             | **Flavor** | **Release** |
| :---------------------------------------------------------------------: | :---------: | :-------------------------------------------------------------------------------------------------: | :--------: | :---------: |
| [<mark style="color:blue;">**LightOn**</mark>](https://www.lighton.ai/) |    France   | [<mark style="color:blue;">**Apache 2.0**</mark>](https://www.apache.org/licenses/LICENSE-2.0.html) |    Base    |    *2026*   |

## Technology

| **Context window** | **Parameters** |     **Architecture**    | **Multilingual** |                                          **Further details**                                          |
| :----------------: | :------------: | :---------------------: | :--------------: | :---------------------------------------------------------------------------------------------------: |
|        *16k*       |      *1B*      | *Vision-Language Model* |       *Yes*      | [<mark style="color:blue;">**Hugging Face**</mark>](https://huggingface.co/lightonai/LightOnOCR-2-1B) |

## Modalities

| **Text** | **Image** |   **Audio**   |
| :------: | :-------: | :-----------: |
|  Output  |   Input   | Not supported |

## Endpoints

| **Chat Completions** | **Embeddings** | **Image generation** |
| :------------------: | :------------: | :------------------: |
|  v1/chat/completions |  Not supported |     Not supported    |

### OCR Example

```json
{
  "model": "lightonai/LightOnOCR-2-1B",
  "messages": [
    {
      "role": "user",
      "content": [
        {
          "type": "image_url",
          "image_url": {
            "url": "https://example.com/document.png"
          }
        }
      ]
    }
  ],
  "max_tokens": 4096,
  "temperature": 0.2,
  "top_p": 0.9
}
```

{% hint style="info" %}
**Note:** LightOnOCR-2-1B always outputs Markdown-formatted text (including LaTeX spans for mathematical notation). The output format is embedded in the model weights and cannot be changed via text prompts. The API accepts a text field in the message content, but the model does not condition its output on it.
{% endhint %}

## Features

| **Streaming** | **Reasoning** | **Tool calling** |
| :-----------: | :-----------: | :--------------: |
| Not supported | Not supported |   Not supported  |

## Rate limits

Rate limits ensure fair usage and reliable access to the AI Model Hub. In addition to the [<mark style="color:blue;">contract-wide rate limits</mark>](https://docs.ionos.com/sections-test/guides/ai/ai-model-hub/how-tos/rate-limits), no model-specific limits apply.