Introducing the GPT-4.1 Model Series for Azure AI Foundry Developers
We’re pleased to introduce the latest version of the GPT model series: GPT-4.1, GPT-4.1-mini, and GPT-4.1-nano, now available on the Microsoft Azure OpenAI Service. These advanced models offer notable enhancements in coding capabilities, instruction following, and processing extensive context, which are essential for developers. Additionally, fine-tuning support available for GPT-4.1 and GPT-4.1-mini allows for tailored model customizations specific to diverse business needs.
What is GPT-4.1?
GPT-4.1 represents the latest evolution in the GPT-4o model family, specifically designed for efficiency in coding and delivering precise instructions. This model is set to optimize workflows and drive productivity, aiding developers across a variety of scenarios.
Key Features of GPT-4.1
GPT-4.1 introduces several significant advancements:
- Improved Coding and Instruction Following: The model excels in tackling complex technical challenges. It produces clean front-end code, recognizes necessary alterations in existing codebases, and ensures outputs that compile and run smoothly.
- Long Context Model: GPT-4.1 can process inputs of up to one million tokens, enabling it to understand and analyze extensive context in one go. This feature is particularly useful for tasks that demand comprehensive understanding and multi-step processes.
- Enhanced Instruction Comprehension: This model is adept at following intricate instructions and is designed to collaborate more intuitively, making it simpler for users to engage with in a range of applications.
Model Capabilities
GPT-4.1 not only improves upon existing features and boasts long context support but also retains the foundational API capabilities seen in the GPT-4o lineage. This includes functionalities such as tool calling and producing structured outputs.
| Model | Reasoning & Accuracy | Cost & Efficiency | Context Length |
| GPT-4.1 | Highest | Higher Cost | 1M |
| GPT-4.1-mini | Balanced | Balanced | 1M |
| GPT-4.1-nano | Lower | Lowest Cost | 1M |
Fine-Tuning Options for Your Business
Fine-tuning capabilities for GPT-4.1 and GPT-4.1-mini will be available soon, allowing developers to customize these models based on their specific business requirements. This supervised fine-tuning facilitates secure adjustments to the underlying models using a company’s own datasets, aligning responses with the organization’s particular tone, industry-specific language, and operational workflows. These fine-tuned models will be managed and deployed via Azure AI Foundry, ensuring users can maintain control over versioning, security, and scalability.
Discover GPT-4.1 Now
GPT-4.1 has launched on the Azure OpenAI Service, showcasing remarkable improvements in AI capabilities. This release signifies a forward leap in performance, efficiency, and adaptability across numerous applications. Whether you are interested in enhancing a customer service chatbot, building innovative data analysis tools, or venturing into new areas in machine learning, GPT-4.1 provides valuable tools for your endeavors.
We encourage you to explore the new features and see how GPT-4.1 can transform your workflows and applications. Visit this link to discover, deploy, and build applications using these powerful models in Azure AI Foundry, keeping you ahead in the fast-paced AI landscape.
