Earlier at the moment, OpenAI introduced GPT-4.1 fashions focused at builders. The GPT-4.1 mannequin household consists of GPT-4.1, GPT-4.1 mini, and GPT-4.1 nano, and these can be found solely through APIs.

Based on OpenAI, these new purpose-built fashions for builders ship vital enhancements in coding, instruction following, and long-context understanding. The OpenAI crew has optimized GPT-4.1 for real-world coding situations, together with frontend coding, following codecs reliably, adhering to response construction and ordering, and extra.

For the primary time, OpenAI is supporting as much as 1 million tokens of context with these fashions. Additionally they characteristic a refreshed information cutoff of June 2024.

We’re bringing the most recent GPT-4.1 fashions from OpenAI to Foundry, representing vital developments in coding, instruction following, and long-context processing. Massive upgrades for devs constructing with AI.

— Satya Nadella (@satyanadella) April 14, 2025

At this time, Microsoft introduced that the GPT-4.1, 4.1-mini, and 4.1-nano fashions are actually accessible on Microsoft Azure OpenAI Service and GitHub. To deal with the wants of enterprise prospects, Microsoft will even be including help for supervised fine-tuning for GPT-4.1 and 4.1-mini later this week.

It will enable enterprises to customise the bottom fashions based mostly on their very own datasets, with particular tone, area terminology, and job workflows. Moreover, the fine-tuned fashions will likely be managed and deployed via the Azure AI Foundry.

On GitHub, the brand new GPT-4.1 is accessible in GitHub Copilot and GitHub Fashions. Copilot Enterprise directors might want to allow entry to this new GPT-4.1 mannequin for his or her customers via a brand new coverage in Copilot settings. GitHub highlighted that the brand new GPT-4.1 mannequin will carry out higher than the earlier workhorse mannequin, GPT-4o, throughout the board, with main enhancements in coding.

This new mannequin is now accessible for all GitHub Copilot customers and will be accessed through the mannequin picker beneath the identify GPT-4.1 (Preview) in Visible Studio Code and on the github.com chat. Builders also can attempt GPT-4.1 alongside different fashions within the GitHub Fashions playground.