Azure OpenAI Model Upgrades: Prompt Safety Pitfalls with GPT-4o and Beyond
Upgrading to New Azure OpenAI Models? Beware Your Old Prompts Might Break. I recently worked on upgrading our Azure OpenAI integration from gpt-35-turbo to gpt-4o-mini, expecting it to be a straightforward configuration change. Just update the Azure Foundry resource endpoint, change the model name, deploy the code — and voilà, everything should work as before. Right? Not quite. The Unexpected Roadblock As soon as I deployed the updated code, I started seeing 400 status errors from the OpenAI endpoint. The message was cryptic: The response was filtered due to the prompt triggering Azure OpenAI's content management policy. At first, I assumed it was a bug in my SDK call or a malformed payload. But after digging deeper, I realized this wasn’t a technical failure — it was a content safety filter kicking in before the prompt even reached the model. The Prompt That Broke It Here’s the original system prompt that worked perfectly with gpt-35-turbo: YOU ARE A QNA EXTRACTOR IN TEXT FORMAT. YOU WILL GET A SET OF SURVEYJS QNA JSONS. YOU WILL CONVERT THAT INTO A TEXT DOCUMENT. FOR THE QUESTIONS WHERE NO ANSWER WAS GIVEN, MARK THOSE AS NO ANSWER. HERE IS THE QNA: BE CREATIVE AND PROFESSIONAL. I WANT TO GENERATE A DOCUMENT TO BE PUBLISHED. {{$style}} +++++ {{$input}} +++++ This prompt had been reliable for months. But with gpt-4o-mini, it triggered Azure’s new input safety layer, introduced in mid-2024. What Changed with GPT-4o-mini? Unlike gpt-35-turbo, the gpt-4o family: Applies stricter content filtering — not just on the output, but also on the input prompt. Treats system messages and user messages as role-based chat messages, passing them through moderation before the model sees them. Flags prompts that look like prompt injection attempts like aggressive instructions like “YOU ARE…”, “BE CREATIVE”, “GENERATE”, “PROFESSIONAL”. Flags unusual formatting (like `+++++`), artificial delimiters or token markers as it may look like encoded content. In short, the model didn’t even get a chance to process my prompt — it was blocked at the gate. Fixing It: Softening the Prompt The solution wasn’t to rewrite the entire logic, but to soften the system prompt and remove formatting that could be misinterpreted. Here’s what helped: - Replacing “YOU ARE…” with a gentler instruction like “Please help convert the following Q&A data…” - Removing creative directives like “BE CREATIVE” or “PROFESSIONAL” unless clearly contextualized. - Avoiding raw JSON markers and template syntax (`{{ }}`, `+++++`) in the prompt. Once I made these changes, the model responded smoothly — and the upgrade was finally complete. Evolving the Prompt — Not Abandoning It Interestingly, for some prompts I didn’t have to completely eliminate the “YOU ARE…” structure. Instead, I refined it to be more natural and less directive. Here’s a comparison: ❌ Old Prompt (Blocked) ✅ New Prompt (Accepted) YOU ARE A SOURCING AND PROCUREMENT MANAGER. YOU WILL GET BUYER'S REQUIREMENTS IN QNA FORMAT. HERE IS THE QNA: {{$input}} +++++ YOU WILL GENERATE TOP 10 {{$category}} RELATED QUESTIONS THAT CAN BE ASKED OF A SUPPLIER IN JSON FORMAT. THE JSON MUST HAVE QUESTION NUMBER AS THE KEY AND QUESTION TEXT AS THE QUESTION. DON'T ADD ANY DESCRIPTION TEXT OR FORMATTING IN THE OUTPUT. BE CREATIVE AND PROFESSIONAL. I WANT TO GENERATE AN RFX. You are an AI assistant that helps clarify sourcing requirements. You will receive buyer's requirements in QnA format. Here is the QnA: {$input} Your task is to generate the top 10 {$category} related questions that can be asked of a supplier, in JSON format. - The JSON must use the question number as the key and the question text as the value. - Do not include any description text or formatting in the output. - Focus on creating clear, professional, and relevant questions that will help prepare an RFX. Key Takeaways - Model upgrades aren’t just about configuration changes — they can introduce new moderation layers that affect prompt design. - Prompt safety filtering is now a first-class citizen in Azure OpenAI, especially for newer models. - System prompts need to be rewritten with moderation in mind, not just clarity or creativity. This experience reminded me that even small upgrades can surface big learning moments. If you're planning to move to gpt-4o-mini or any newer Azure OpenAI model, take a moment to review your prompts — they might need a little more finesse than before.Introducing AzureImageSDK — A Unified .NET SDK for Azure Image Generation And Captioning
Hello 👋 I'm excited to share something I've been working on — AzureImageSDK — a modern, open-source .NET SDK that brings together Azure AI Foundry's image models (like Stable Image Ultra, Stable Image Core), along with Azure Vision and content moderation APIs and Image Utilities, all in one clean, extensible library. While working with Azure’s image services, I kept hitting the same wall: Each model had its own input structure, parameters, and output format — and there was no unified, async-friendly SDK to handle image generation, visual analysis, and moderation under one roof. So... I built one. AzureImageSDK wraps Azure's powerful image capabilities into a single, async-first C# interface that makes it dead simple to: 🎨 Inferencing Image Models 🧠 Analyze visual content (Image to text) 🚦 Image Utilities — with just a few lines of code. It's fully open-source, designed for extensibility, and ready to support new models the moment they launch. 🔗 GitHub Repo: https://github.com/DrHazemAli/AzureImageSDK Also, I've posted the release announcement on the Azure AI Foundry's GitHub Discussions 👉🏻 feel free to join the conversation there too. The SDK is available on NuGet too. Would love to hear your thoughts, use cases, or feedback!Multi Model Deployment with Azure AI Foundry Serverless, Python and Container Apps
Intro Azure AI Foundry is a comprehensive AI suite, with a vast set of serverless and managed models offerings designed to democratize AI deployment. Whether you’re running a small startup or an 500 enterprise, Azure AI Foundry provides the flexibility and scalability needed to implement and manage machine learning and AI models seamlessly. By leveraging Azure’s robust cloud infrastructure, you can focus on innovating and delivering value, while Azure takes care of the heavy lifting behind the scenes. In this demonstration, we delve into building an Azure Container Apps stack. This innovative approach allows us to deploy a Web App that facilitates interaction with three powerful models: GPT-4, Deepseek, and PHI-3. Users can select from these models for Chat Completions, gaining invaluable insights into their actual performance, token consumption, and overall efficiency through real-time metrics. This deployment not only showcases the versatility and robustness of Azure AI Foundry but also provides a practical framework for businesses to observe and measure AI effectiveness, paving the way for data-driven decision-making and optimized AI solutions. Azure AI Foundry: The evolution Azure AI Foundry represents the next evolution in Microsoft’s AI offerings, building on the success of Azure AI and Cognitive Services. This unified platform is designed to streamline the development, deployment, and management of AI solutions, providing developers and enterprises with a comprehensive suite of tools and services. With Azure AI Foundry, users gain access to a robust model catalog, collaborative GenAIOps tools, and enterprise-grade security features. The platform’s unified portal simplifies the AI development lifecycle, allowing seamless integration of various AI models and services. Azure AI Foundry offers the flexibility and scalability needed to bring your AI projects to life, with deep insights and fast adoption path for the users. The Model Catalog allows us to filter and compare models per our requirements and easily create deployments directly from the Interface. Building the Application Before describing the methodology and the process, we have to make sure our dependencies are in place. So let’s have a quick look on the prerequisites of our deployment. GitHub - passadis/ai-foundry-multimodels: Azure AI Foundry multimodel utilization and performance metrics Web App. Azure AI Foundry multimodel utilization and performance metrics Web App. - passadis/ai-foundry-multimodels github.com Prerequisites Azure Subscription Azure AI Foundry Hub with a project in East US. The models are all supported in East US. VSCode with the Azure Resources extension There is no need to show the Azure Resources deployment steps, since there are numerous ways to do it and i have also showcased that in previous posts. In fact, it is a standard set of services to support our Micro-services Infrastructure: Azure Container Registry, Azure Key Vault, Azure User Assigned Managed identity, Azure Container Apps Environment and finally our Azure AI Foundry Model deployments. Frontend – Vite + React + TS The frontend is built using Vite and React and features a dropdown menu for model selection, a text area for user input, real-time response display, as well as loading states and error handling. Key considerations in the frontend implementation include the use of modern React patterns and hooks, ensuring a responsive design for various screen sizes, providing clear feedback for user interactions, and incorporating elegant error handling. The current implementation allows us to switch models even after we have initiated a conversation and we can keep up to 5 messages as Chat History. The uniqueness of our frontend is the performance information we get for each response, with Tokens, Tokens per Second and Total Time. Backend – Python + FastAPI The backend is built with FastAPI and is responsible for model selection and configuration, integrating with Azure AI Foundry, processing requests and responses, and handling errors and validation. A directory structure as follows can help us organize our services and utilize the modular strengths of Python: backend/ ├── app/ │ ├── __init__.py │ ├── main.py │ ├── config.py │ ├── api/ │ │ ├── __init__.py │ │ └── routes.py │ ├── models/ │ │ ├── __init__.py │ │ └── request_models.py │ └── services/ │ ├── __init__.py │ └── azure_ai.py ├── run.py # For Local runs ├── Dockerfile ├── requirements.txt └── .env Azure Container Apps A powerful combination allows us to easily integrate both using Dapr, since it is natively supported and integrated in our Azure Container Apps. try { const response = await fetch('/api/v1/generate', { method: 'POST', headers: { 'Content-Type': 'application/json', }, body: JSON.stringify({ model: selectedModel, prompt: userInput, parameters: { temperature: 0.7, max_tokens: 800 } }), }); However we need to correctly configure NGINX to proxy the request to the Dapr Sidecar since we are using Container Images. # API endpoints via Dapr location /api/v1/ { proxy_pass http://localhost:3500/v1.0/invoke/backend/method/api/v1/; proxy_http_version 1.1; proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection 'upgrade'; proxy_set_header Host $host; proxy_cache_bypass $http_upgrade; Azure Key Vault As always all our secret variables like the API Endpoints and the API Keys are stored in Key Vault. We create a Key Vault Client in our Backend and we call each key only the time we need it. That makes our deployment more secure and efficient. Deployment Considerations When deploying your application: Set up proper environment variables Configure CORS settings appropriately Implement monitoring and logging Set up appropriate scaling policies Azure AI Foundry: Multi Model Architecture The solution is built on Azure Container Apps for serverless scalability. The frontend and backend containers are hosted in Azure Container Registry and deployed to Container Apps with Dapr integration for service-to-service communication. Azure Key Vault manages sensitive configurations like API keys through a user-assigned Managed Identity. The backend connects to three Azure AI Foundry models (DeepSeek, GPT-4, and Phi-3), each with its own endpoint and configuration. This serverless architecture ensures high availability, secure secret management, and efficient model interaction while maintaining cost efficiency through consumption-based pricing. Conclusion This Azure AI Foundry Models Demo showcases the power of serverless AI integration in modern web applications. By leveraging Azure Container Apps, Dapr, and Azure Key Vault, we’ve created a secure, scalable, and cost-effective solution for AI model comparison and interaction. The project demonstrates how different AI models can be effectively compared and utilized, providing insights into their unique strengths and performance characteristics. Whether you’re a developer exploring AI capabilities, an architect designing AI solutions, or a business evaluating AI models, this demo offers practical insights into Azure’s AI infrastructure and serverless computing potential. References Azure AI Foundry Azure Container Apps Azure AI – Documentation AI learning hub CloudBlogger: Text To Speech with Containers
