GPT-4o
Retiring GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini in ChatGPT
On February 13, 2026, alongside the previously announced retirement of GPT‑5 (Instant, Thinking, and Pro), we will retire GPT‑4o, GPT‑4.1, GPT‑4.1 mini, and OpenAI o4-mini from ChatGPT. In the API, there are no changes at this time.
Customizable, no-code voice agent automation with GPT-4o
Retell AI is transforming the call center with AI voice automation powered by GPT-4o and GPT-4.1. Its no-code platform enables businesses to launch natural, real-time voice agents that cut call costs, boost CSAT, and automate customer conversations—without scripts or hold times.
Addendum to OpenAI o3 and o4-mini system card: OpenAI o3 Operator
We are replacing the existing GPT-4o-based model for Operator with a version based on OpenAI o3. The API version will remain based on 4o.
New tools and features in the Responses API
New features in the Responses API: Remote MCP, image gen, Code Interpreter, and more. Powering faster, smarter agents with GPT-4o & o-series models, plus new features for reliability and efficiency.
Building smarter maps with GPT-4o vision fine-tuning
Building smarter maps with GPT-4o vision fine-tuning
Creating agent and human collaboration with GPT 4o
Altera uses GPT-4o to build a new area of human collaboration
Upgrading the Moderation API with our new multimodal moderation model
We’re introducing a new model built on GPT-4o that is more accurate at detecting harmful text and images, enabling developers to build more robust moderation systems.
Introducing Verdi, an AI dev platform powered by GPT-4o
Mercado Libre introduces Verdi, an AI developer platform powered by GPT-4o
Fine-tuning GPT-4o webinar
Fine-Tuning GPT-4o Webinar
Fine-tuning now available for GPT-4o
Fine-tune custom versions of GPT-4o to increase performance and accuracy for your applications
GPT-4o System Card External Testers Acknowledgements
GPT-4o system card external testers acknowledgements
GPT-4o System Card
This report outlines the safety work carried out prior to releasing GPT-4o including external red teaming, frontier risk evaluations according to our Preparedness Framework, and an overview of the mitigations we built in to address key risk areas.
Using GPT-4o reasoning to transform cancer care
Color Health is working with OpenAI to pioneer a new way of accelerating cancer patients’ access to treatment. Their new Cancer Copilot application uses GPT-4o to identify missing diagnostics and create tailored workup plans, enabling healthcare providers to make evidence-based decisions about cancer screening and treatment.
Hello GPT-4o
We’re announcing GPT-4 Omni, our new flagship model which can reason across audio, vision, and text in real time.