On May 13th GPT-4o was released in preview in the Azure OpenAI Playground. No API access, only accessible in the browser. Today I was going into the playground to test something with the GPT-4o model, but could not find it. What had happened? Turnes out it suddenly was in GA and available to choose under Deploy model. The API version was 2024-05-13. I found some documentation on it here, but nothing about how to do the API requests.
I figured it might use the same request as the Vision models as I was going to do calls with text/image. I created a PowerShell script using the deployment I created with API version 2024-05-13, but I got the following error:
Looks like it could not find the endpoint. Why was that happening? My first thought was to see what API calls the playground was doing in the background, so I opened dev mode in my browser. Turns out the API version the playground was using was 2024-04-01-preview, even though the only model deployed was GPT-4o with version 2024-05-13. I tried switching to 2024-04-01-preview when doing the API calls in PowerShell, and it worked!
So I have created a PowerShell script that keeps the context of the conversation, analyze images and get responses based on them. I have written the script so you can both use local images and URL from online images. Below you have a couple examples of what is possible to do. All the way at the bottom I have the script I wrote.
Here i analyzed 5 images one by one, and then asked to list objects from all of them.
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| # This function takes a path to a file as a parameter and returns the base64 string of that file. | |
| function Get-Photo { | |
| param ( | |
| [Parameter(Mandatory=$true)] | |
| [string]$path | |
| ) | |
| [convert]::ToBase64String((get-content $path -Raw -AsByteStream)) | |
| } | |
| function Get-AzureOpenAIToken{ | |
| <# .SYNOPSIS | |
| Get an azure token for user or managed identity thats required to authenticate to Azure OpenAI with Rest API. | |
| Also construct the header if you are using an Azure OpenAI API key instead of Azure AD authentication. | |
| .PARAMETER ManagedIdentity | |
| Use this parameter if you want to use a managed identity to authenticate to Azure OpenAI. | |
| .PARAMETER User | |
| Use this parameter if you want to use a user to authenticate to Azure OpenAI. | |
| .PARAMETER APIKey | |
| Use this parameter if you want to use an API key to authenticate to Azure OpenAI. | |
| .EXAMPLE | |
| # Manually specify username and password to acquire an authentication token: | |
| Get-AzureOpenAIToken -APIKey "ghgkfhgfgfgkhgh" | |
| Get-AzureOpenAIToken -ManagedIdentity $true | |
| Get-AzureOpenAIToken -User $true | |
| .NOTES | |
| Author: Alexander Holmeset | |
| Twitter: @AlexHolmeset | |
| Website: https://www.alexholmeset.blog | |
| Created: 09-02-2023 | |
| Updated: | |
| Version history: | |
| 1.0.0 - (09-02-2023) Function created | |
| #> | |
| [CmdletBinding()] | |
| param ( | |
| [Parameter(Mandatory=$false)] | |
| [string]$APIKey, | |
| [Parameter(Mandatory=$false)] | |
| [string]$ManagedIdentity, | |
| [Parameter(Mandatory=$false)] | |
| [string]$User | |
| ) | |
| Process { | |
| $ErrorActionPreference = "Stop" | |
| if (Get-Module -ListAvailable -Name Az.Accounts) { | |
| # Write-Host "You have the Az.Accounts module installed" | |
| } | |
| else { | |
| Write-Host "You need to install the Az.Accounts module"; | |
| break | |
| } | |
| If(!$MyHeader){ | |
| If($ManagedIdentity -eq $true){ | |
| "managed" | |
| try { | |
| Connect-AzAccount -Identity | |
| $MyTokenRequest = Get-AzAccessToken -ResourceUrl "https://cognitiveservices.azure.com" | |
| $MyToken = $MyTokenRequest.token | |
| If(!$MyToken){ | |
| Write-Warning "Failed to get API access token!" | |
| Exit 1 | |
| } | |
| $Global:MyHeader = @{"Authorization" = "Bearer $MyToken" } | |
| } | |
| catch [System.Exception] { | |
| Write-Warning "Failed to get Access Token, Error message: $($_.Exception.Message)"; break | |
| } | |
| } | |
| If($User -eq $true){ | |
| "USER" | |
| try { | |
| Connect-AzAccount | |
| $MyTokenRequest = Get-AzAccessToken -ResourceUrl "https://cognitiveservices.azure.com" | |
| $MyToken = $MyTokenRequest.token | |
| If(!$MyToken){ | |
| Write-Warning "Failed to get API access token!" | |
| Exit 1 | |
| } | |
| $Global:MyHeader = @{"Authorization" = "Bearer $MyToken" } | |
| } | |
| catch [System.Exception] { | |
| Write-Warning "Failed to get Access Token, Error message: $($_.Exception.Message)"; break | |
| } | |
| } | |
| If($APIkey){ | |
| "APIKEY" | |
| $Global:MyHeader = @{"api-key" = $apikey } | |
| } | |
| } | |
| } | |
| } | |
| function Get-Chat { | |
| <# .SYNOPSIS | |
| Get a resposne from the chat endpoint in Azure OpenAI. | |
| .PARAMETER DeploymentName | |
| A deployment name should be provided. | |
| .PARAMETER ResourceName | |
| A Resource name should be provided. | |
| .PARAMETER Prompt | |
| A prompt name should be provided. | |
| .PARAMETER Token | |
| A token name should be provided. | |
| .EXAMPLE | |
| Get-Chat -DeploymentName $DeploymentName -ResourceName $ResourceName -maxtokens 1000 -prompt "What is the meaning of life?" -AssitantInstruction $AssitantInstruction | |
| .NOTES | |
| Author: Alexander Holmeset | |
| Twitter: @AlexHolmeset | |
| Website: https://www.alexholmeset.blog | |
| Created: 09-02-2023 | |
| Updated: | |
| Version history: | |
| 1.0.0 - (09-02-2023) Function created | |
| #>[CmdletBinding()] | |
| param ( | |
| [parameter(Mandatory = $false, HelpMessage = "Your azure openai deployment name")] | |
| [ValidateNotNullOrEmpty()] | |
| [string]$DeploymentName, | |
| [parameter(Mandatory = $false, HelpMessage = "your azure openai resource name")] | |
| [ValidateNotNullOrEmpty()] | |
| [string]$ResourceName, | |
| [parameter(Mandatory = $false, HelpMessage = "Your Azure OpenAI prompt")] | |
| [ValidateNotNullOrEmpty()] | |
| [string]$Prompt, | |
| [parameter(Mandatory = $false, HelpMessage = "Your Azure OpenAI service instructions")] | |
| [ValidateNotNullOrEmpty()] | |
| [string]$AssitantInstruction, | |
| [parameter(Mandatory = $true, HelpMessage = "Use photo?")] | |
| [ValidateNotNullOrEmpty()] | |
| [string]$ReadImage, | |
| [parameter(Mandatory = $true, HelpMessage = "Set number of max tokens")] | |
| [ValidateNotNullOrEmpty()] | |
| [string]$Maxtokens, | |
| [parameter(Mandatory = $true, HelpMessage = "Is image local or online?")] | |
| [ValidateNotNullOrEmpty()] | |
| [string]$ImageLocalOrOnline | |
| ) | |
| Process { | |
| $ErrorActionPreference = "Stop" | |
| $APIVersion = "2024-04-01-preview" | |
| # Construct URI | |
| $uri = "https://$ResourceName.openai.azure.com/openai/deployments/$DeploymentName/chat/completions?api-version=$ApiVersion" | |
| # Construct Body | |
| if ($ReadImage -eq $true) { | |
| If($ImageLocalOrOnline -like "online"){ | |
| $script:conversation += @" | |
| {"role": "user", "content": [{"type": "text", "text": "$Prompt"},{"type": "image_url","image_url": {"url": "$url"}}]}, | |
| "@ | |
| } | |
| else{ $script:conversation += @" | |
| {"role": "user", "content": [{"type": "text", "text": "$Prompt"},{"type": "image_url","image_url": {"url": "data:image/jpeg;base64,$photo"}}]}, | |
| "@ | |
| } | |
| } | |
| else { | |
| $script:conversation += @" | |
| {"role": "user", "content": [{"type": "text", "text": "$Prompt"}]}, | |
| "@ | |
| } | |
| $body = @" | |
| { | |
| "messages": [ | |
| $script:conversation | |
| {"role": "system", "content": "$assitantInstruction"} | |
| ], | |
| "max_tokens": $maxtokens, | |
| "stream": false | |
| } | |
| "@ | |
| try { | |
| $Global:Request = invoke-restmethod -Method POST -Uri $uri -ContentType "application/json" -Body $body -Headers $Global:MyHeader | |
| $script:conversation += @" | |
| {"role": "assistant", "content": "$($Request.choices.message.content)"}, | |
| "@ | |
| } | |
| catch [System.Exception] { | |
| $_ | |
| Write-Warning "Failed to to POST request: $($_.Exception.Message)"; break | |
| } | |
| "User: $Prompt" | |
| "Assistant: $($Request.choices.message.content)" | |
| } | |
| } | |
| Get-AzureOpenAIToken -APIKey "Enter API key here." | |
| $DeploymentName = "Enter deployment name here." | |
| $ResourceName = "Enter resource name here." | |
| $AssitantInstruction = "You are a helpfull assistant." | |
| #Path to the image to upload. | |
| $path = "Enter path to image here." | |
| $photo = Get-Photo -path $path | |
| #URL to image to upload. | |
| $url = "Enter URL to image here." | |
| $Prompt = "Please describe this photo." | |
| #If doing a request with an image, set ReadImage to true, and ImageLocalOrOnline to either local or online. | |
| Get-Chat -DeploymentName $DeploymentName -ResourceName $ResourceName -AssitantInstruction $AssitantInstruction -Prompt $Prompt -ReadImage $true -ImageLocalOrOnline local -maxtokens 4000 | |
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