> For the complete documentation index, see [llms.txt](https://developer.topazlabs.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.topazlabs.com/image-models/gigapixel/high-fidelity-3.md).

# High Fidelity 3

### Model Overview

**High Fidelity 3** is a precision upscaling model designed to deliver the best results on high-resolution sources. This model improves on High Fidelity 2 with enhanced resolution scaling and minimal detail loss or artifacting. It focuses on preserving original image structure and realism, reducing the plasticky appearance and excess artifacts seen in earlier models while maintaining a clean, natural output.

High Fidelity 3 performs best on medium to high and high quality images, including modern photos, RAW images, and smartphone photography, and supports a wide range of content such as portraits, landscapes, wildlife, and images with graphics.

### Key Capabilities

* Higher quality upscaling with improved detail retention and fewer artifacts compared to High Fidelity 2.
* Preserves natural image structure with reduced plasticky appearance and more consistent textures.
* Optimized for high-quality images, delivering clean results beyond traditional resizing.

### Model Pricing

<table data-header-hidden data-full-width="false"><thead><tr><th width="119.84765625">Text</th><th width="60.390625" data-type="number">Number</th><th width="59.5390625" data-type="number"></th><th width="60.0859375" data-type="number"></th><th width="60.265625" data-type="number"></th><th width="59.94140625" data-type="number"></th><th width="59.5390625" data-type="number"></th><th width="60.34375" data-type="number"></th><th width="59.9296875" data-type="number"></th><th width="59.828125" data-type="number"></th><th width="59.5078125" data-type="number"></th></tr></thead><tbody><tr><td><code>Output MP</code></td><td>1</td><td>4</td><td>8</td><td>16</td><td>24</td><td>32</td><td>40</td><td>50</td><td>64</td><td>100</td></tr><tr><td><code>Credits</code></td><td>1</td><td>1</td><td>1</td><td>1</td><td>1</td><td>2</td><td>2</td><td>3</td><td>3</td><td>5</td></tr></tbody></table>

### Getting Started

**Endpoint**

* <https://api.topazlabs.com/image/v1/enhance/async>
  * `model` — `"Upscale High Fidelity V3"`

<details>

<summary><strong>Endpoint-Specific Parameters</strong></summary>

* `face_enhancement` — boolean
  * Leverages our face recovery model to enhance faces.
* `face_enhancement_strength` — decimal between 0 and 1 *(required if `face_enhancement=true`)*
  * Sets the strength of the face recovery.
* `face_enhancement_creativity` — decimal between 0 and 1 *(required if `face_enhancement=true`)*
  * Choose realistic or creative face recovery.
* `subject_detection` — `"foreground"`, `"background"`, or `"all"`
  * Choose where enhancements are applied.
* `sharpen` — decimal between 0 and 1
  * Slightly sharpens the image.
* `denoise` — decimal between 0 and 1
  * Reduces noise in the image.
* `fix_compression` — decimal between 0 and 1
  * Reduces compression artifacts to improve details.
* `strength` — decimal between 0.01 and 1
  * Controls model strength. Too high of a result can make results look unrealistic.

These parameters should be appended as key-value fields in the form-data request bodies (i.e. alongside the `model`, `output_height`, and `face_enhancement` etc. fields). Any parameters not explicitly provided are **automatically** configured by our auto-parameter model. Extra parameters provided that are not supported are ignored.

</details>

**Model-Specific Parameters**

* `recovery_strength` — float from 0.0 to 1.0, default 1.0
* `opacity` — float from 0.0 to 1.0, default 1.0

### Examples

<table data-card-size="large" data-view="cards"><thead><tr><th align="center"></th><th data-hidden data-card-cover data-type="image">Cover image</th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td align="center">Click to view</td><td><a href="/files/zVwiIEB2chiTXnyCv09q">/files/zVwiIEB2chiTXnyCv09q</a></td><td><a href="https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/model-examples/harvey_before.webp&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/model-examples/harvey_after.png&#x26;src2label=After&#x26;zoom=1">https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/model-examples/harvey_before.webp&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/model-examples/harvey_after.png&#x26;src2label=After&#x26;zoom=1</a></td></tr><tr><td align="center">Click to view</td><td><a href="/files/kRjzMNvCY5nka1jlV0pR">/files/kRjzMNvCY5nka1jlV0pR</a></td><td><a href="https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/model-examples/coffee_shop_before.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/model-examples/coffee_shop_after.png&#x26;src2label=After&#x26;zoom=1">https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/model-examples/coffee_shop_before.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/model-examples/coffee_shop_after.png&#x26;src2label=After&#x26;zoom=1</a></td></tr></tbody></table>


---

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