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API misc updates
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Lines changed: 647 additions & 409 deletions

‎CHANGELOG.md‎

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# Changelog
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### Unreleased
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### 4.49.0
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- **IMPORTANT:** The default model for `Request-ChatCompletion` & `Request-Response` is changed to `gpt-5.4-mini`.
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- **IMPORTANT:** The default model for Images endpoints is changed to `gpt-image-2`. It because the dall-e models are shut down by OpenAI.
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- API misc updates.
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- Add gpt-5.3, gpt-5.4, gpt-5.5, gpt-image-2
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- Update documents.
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- Add `chatgpt-image-latest` to `Request-ImageGeneration` and `Request-ImageEdit`.
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‎Docs/Request-ChatCompletion.md‎

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@@ -122,7 +122,7 @@ PS C:\> Request-ChatCompletion -Message $Message -Model gpt-4o -Images "C:\image
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### Example 6: Audio input / output
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```PowerShell
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PS C:\> Request-ChatCompletion -Modalities text, audio -InputAudio 'C:\hello.mp3' -AudioOutFile 'C:\response.mp3' -Model gpt-4o-audio-preview
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PS C:\> Request-ChatCompletion -Modalities text, audio -InputAudio 'C:\hello.mp3' -AudioOutFile 'C:\response.mp3' -Model gpt-audio-1.5
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```
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## PARAMETERS

‎Docs/Request-ImageEdit.md‎

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@@ -93,7 +93,7 @@ Request-ImageEdit -Model 'gpt-image-2' -Image C:\sand_with_feather.png -Mask C:\
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### -Image
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(Required)
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The image(s) to edit. Must be a supported image file or an array of images. For the GPT image models, each image should be a `png`, `webp`, or `jpg` file less than 50MB. You can provide up to 16 images. For dall-e-2, you can only provide one image, and it should be a square png file less than 4MB.
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The image(s) to edit. Must be a supported image file or an array of images. For the GPT image models, each image should be a `png`, `webp`, or `jpg` file less than 50MB. You can provide up to 16 images.
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```yaml
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Type: String[]
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### -Prompt
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(Required)
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A text description of the desired image(s). The maximum length is 32000 characters for the GPT image models, 1000 characters for `dall-e-2` and 4000 characters for `dall-e-3`.
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A text description of the desired image(s). The maximum length is 32000 characters for the GPT image models.
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```yaml
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Type: String
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```
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### -Model
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The model to use for image generation. Only `dall-e-2` and the GPT image models are supported. Defaults to `dall-e-2` unless a parameter specific to the GPT image models is used.
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The model to use for image generation. Defaults to `gpt-image-2`.
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```yaml
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Type: String
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The quality of the image that will be generated.
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- `auto` (default value) will automatically select the best quality for the given model.
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- `high`, `medium` and `low` are supported for the GPT image models.
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- `hd` and `standard` are supported for `dall-e-3`.
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- `standard` is the only option for `dall-e-2`.
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```yaml
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Type: String

‎Docs/Request-ImageGeneration.md‎

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The quality of the image that will be generated.
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- `auto` (default value) will automatically select the best quality for the given model.
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- `high`, `medium` and `low` are supported for the GPT image models.
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- `hd` and `standard` are supported for `dall-e-3`.
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- `standard` is the only option for `dall-e-2`.
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```yaml
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Type: String

‎PSOpenAI-Help.xml‎

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‎Private/Assert-DeprecationModel.ps1‎

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@@ -53,12 +53,38 @@ class OpenAIDepricationModels {
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'gpt-4-0314' = [datetime]::new(2026, 03, 26)
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'gpt-4-1106-preview' = [datetime]::new(2026, 03, 26)
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'gpt-4-0125-preview' = [datetime]::new(2026, 03, 26)
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'gpt-4o-realtime-preview' = [datetime]::new(2026, 05, 07)
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'gpt-4o-mini-realtime-preview' = [datetime]::new(2026, 05, 07)
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'gpt-4o-audio-preview' = [datetime]::new(2026, 05, 07)
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'gpt-4o-mini-audio-preview' = [datetime]::new(2026, 05, 07)
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'dall-e-2' = [datetime]::new(2026, 05, 12)
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'dall-e-3' = [datetime]::new(2026, 05, 12)
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'computer-use-preview' = [datetime]::new(2026, 07, 23)
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'gpt-5-chat-latest' = [datetime]::new(2026, 07, 23)
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'gpt-5-codex' = [datetime]::new(2026, 07, 23)
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'gpt-5.1-chat-latest' = [datetime]::new(2026, 07, 23)
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'gpt-5.1-codex' = [datetime]::new(2026, 07, 23)
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'gpt-5.1-codex-max' = [datetime]::new(2026, 07, 23)
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'gpt-5.1-codex-mini' = [datetime]::new(2026, 07, 23)
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'o3-deep-research' = [datetime]::new(2026, 07, 23)
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'o4-mini-deep-research' = [datetime]::new(2026, 07, 23)
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'gpt-5.2-codex' = [datetime]::new(2026, 07, 23)
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'gpt-5.2-chat-latest' = [datetime]::new(2026, 08, 10)
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'gpt-5.3-chat-latest' = [datetime]::new(2026, 08, 10)
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'sora-2' = [datetime]::new(2026, 09, 24)
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'sora-2-pro' = [datetime]::new(2026, 09, 24)
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'gpt-3.5-turbo-instruct' = [datetime]::new(2026, 09, 28)
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'babbage-002' = [datetime]::new(2026, 09, 28)
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'davinci-002' = [datetime]::new(2026, 09, 28)
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'gpt-3.5-turbo-1106' = [datetime]::new(2026, 09, 28)
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'gpt-3.5-turbo' = [datetime]::new(2026, 10, 23)
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'gpt-4' = [datetime]::new(2026, 10, 23)
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'gpt-4.1-nano' = [datetime]::new(2026, 10, 23)
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'gpt-image-1' = [datetime]::new(2026, 10, 23)
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'o1' = [datetime]::new(2026, 10, 23)
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'o1-pro' = [datetime]::new(2026, 10, 23)
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'o3-mini' = [datetime]::new(2026, 10, 23)
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'o4-mini' = [datetime]::new(2026, 10, 23)
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}
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}
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‎Public/Chat/Request-ChatCompletion.ps1‎

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'gpt-4',
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'gpt-4o',
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'gpt-4o-mini',
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'gpt-4o-audio-preview',
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'gpt-4o-mini-audio-preview',
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'gpt-4o-search-preview',
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'gpt-4o-mini-search-preview',
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'gpt-3.5-turbo-16k',
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'gpt-5.2',
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'gpt-5.2-chat-latest',
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'gpt-5.2-pro',
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'gpt-5.3-chat-latest',
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'gpt-5.4',
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'gpt-5.4-mini',
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'gpt-5.4-nano',
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'gpt-5.5',
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'gpt-audio',
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'gpt-audio-mini',
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'gpt-audio-1.5',
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'o1',
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'o3',
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'o3-mini',
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'o4-mini'
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'o4-mini',
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'chat-latest'
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)]
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[string]$Model = 'gpt-3.5-turbo',
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[string]$Model = 'gpt-5.4-mini',
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[Parameter()]
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[AllowEmptyString()]
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[Parameter()]
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[Alias('service_tier')]
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[Completions('auto', 'default', 'flex', 'scale')]
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[Completions('auto', 'default', 'flex', 'scale', 'priority')]
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[string]$ServiceTier,
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[Parameter()]

‎Public/Images/Request-ImageEdit.ps1‎

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'gpt-image-1.5',
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'gpt-image-1',
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'gpt-image-1-mini',
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'chatgpt-image-latest',
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'dall-e-2'
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'chatgpt-image-latest'
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)]
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[string]$Model = 'dall-e-2',
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[string]$Model = 'gpt-image-2',
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[Parameter()]
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[ValidateRange(1, 10)]
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[Alias('n')]
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[uint16]$NumberOfImages = 1,
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[Parameter()]
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[ValidateSet('auto', '1024x1024', '1536x1024', '1024x1536', '256x256', '512x512')]
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[Completions('auto', '1024x1024', '1536x1024', '1024x1536', '256x256', '512x512')]
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[string]$Size = 'auto',
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[Parameter()]
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[ValidateSet('standard', 'low', 'medium', 'high', 'auto')]
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[ValidateSet('low', 'medium', 'high', 'auto')]
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[string][LowerCaseTransformation()]$Quality = 'auto',
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[Parameter()]
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[ValidateSet('png', 'jpeg', 'webp')]
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[string][LowerCaseTransformation()]$OutputFormat = 'png',
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# Obsolete
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[Parameter(ParameterSetName = 'Format')]
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[Alias('response_format')]
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[ValidateSet('url', 'base64', 'byte', 'object')]
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}
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# GPT-Image model does not support response_format parameter
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if ($Model -like 'gpt-image-*') {
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if ($Model -like '*gpt-image-*') {
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if ($PSBoundParameters.ContainsKey('ResponseFormat') -and $ResponseFormat -eq 'url') {
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Write-Warning 'Your specified model does not support response_format=url. Defaulting to object.'
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$ResponseFormat = 'object'
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}
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}
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if ($Model -like 'gpt-image-*') {
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if ($Model -like '*gpt-image-*') {
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# The output_format parameter is only supported for the GPT image models.
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if ($PSBoundParameters.ContainsKey('OutputFormat')) {
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$PostBody.output_format = $OutputFormat

‎Public/Images/Request-ImageGeneration.ps1‎

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'gpt-image-1.5',
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'gpt-image-1',
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'gpt-image-1-mini',
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'chatgpt-image-latest',
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'dall-e-3',
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'dall-e-2'
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'chatgpt-image-latest'
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)]
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[string]$Model = 'dall-e-2',
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[string]$Model = 'gpt-image-2',
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[Parameter()]
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[ValidateRange(1, 10)]
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[Alias('n')]
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[uint16]$NumberOfImages = 1,
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[Parameter()]
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[ValidateSet('auto', '1024x1024', '1536x1024', '1024x1536', '256x256', '512x512', '1792x1024', '1024x1792')]
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[Completions('auto', '1024x1024', '1536x1024', '1024x1536', '256x256', '512x512', '1792x1024', '1024x1792')]
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[string]$Size = 'auto',
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[Parameter()]
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[ValidateSet('standard', 'hd', 'low', 'medium', 'high', 'auto')]
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[ValidateSet('low', 'medium', 'high', 'auto')]
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[string][LowerCaseTransformation()]$Quality = 'auto',
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[Parameter()]
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$PostBody.prompt = $Prompt
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if ($OpenAIParameter.ApiType -eq [OpenAIApiType]::OpenAI) {
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if ($PSBoundParameters.ContainsKey('Model')) {
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$PostBody.model = $Model
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}
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$PostBody.model = $Model
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}
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if ($PSBoundParameters.ContainsKey('NumberOfImages')) {
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}
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# GPT-Image model does not support response_format parameter
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if ($Model -like 'gpt-image-*') {
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if ($Model -like '*gpt-image-*') {
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if ($PSBoundParameters.ContainsKey('ResponseFormat') -and $ResponseFormat -eq 'url') {
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Write-Warning 'Your specified model does not support response_format=url. Defaulting to object.'
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$ResponseFormat = 'object'
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}
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}
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if ($Model -like 'gpt-image-*') {
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if ($Model -like '*gpt-image-*') {
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# The output_format parameter is only supported for the GPT image models.
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$PostBody.output_format = $OutputFormat

‎Public/Images/Request-ImageVariation.ps1‎

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[uint16]$NumberOfImages = 1,
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[Parameter()]
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[ValidateSet('256', '512', '1024', '256x256', '512x512', '1024x1024')]
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[Completions('256', '512', '1024', '256x256', '512x512', '1024x1024')]
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[string]$Size = '1024x1024',
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[Parameter(ParameterSetName = 'Format')]

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