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Azure AI Foundry Blog
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Announcing GPT‑5‑Codex: Redefining Developer Experience in Azure AI Foundry

Naomi Moneypenny's avatar
Sep 23, 2025

Today, we’re excited to announce OpenAI’s GPT‑5‑Codex is generally available in Azure AI Foundry, and in public preview for GitHub Copilot in Visual Studio Code. This release is the next step in our continuous commitment to empower developers with the latest model innovation, now building on the proven strengths of the earlier Codex generation along with the speed and CLI fluency many teams have adopted with the latest codex‑mini.

Next-level features for developers

  • Multimodal coding in a single flow: GPT-5-Codex accepts multimodal inputs including text and image. With this multimodal intelligence, developers are now empowered to tackle complex tasks, delivering context-aware, repository-scale solutions in one single workflow.
  • Advanced tool use across various experiences: GPT-5-Codex is built for real-world developer experiences. Developers in Azure AI Foundry can get seamless automation and deep integration via the Response API, improving developers’ productivity and reducing development time. 
  • Code review expertise: GPT‑5‑Codex is specially trained to conduct code reviews and surface critical flows, helping developers catch issues early and improve code quality with AI-powered insights. It transforms code review from a manual bottleneck into an intelligent, adaptive and integrated process, empowering developers to deliver high-quality code experience.

How GPT5‑Codex makes your life easier

  • Stay in flow, not in friction: With GPT‑5‑Codex, move smoothly from reading issues to writing code and checking UI; all in one place. It keeps context, so developers stay focused and productive. No more jumping between tools or losing track of what they were doing.
  • Refactor and migrate with confidence: Whether cleaning up code or moving to a new framework, GPT‑5‑Codex helps stage updates, run tests, and fix issues as you go. It’s like having a digital colleague for those tricky transitions.

 

Hero use cases: real impact for developers

  • Repo‑aware refactoring assistant: Feed repo and architecture diagrams to GPT‑5‑Codex. Get cohesive refactors, automated builds, and visual verification via screenshots.
  • Flaky test hunter: Target failing test matrices. The model executes runs, polls status, inspects logs, and recommends fixes looping until stability.
  • Cloud migration copilot: Edit IaC scripts, kick off CLI commands, and iterate on errors in a controlled loop, reducing manual toil.

Pricing and Deployment available at GA

Deployment

Available Region

 

Pricing ($/million tokens)

Standard Global

East US 2

Sweden Central

Input

Cached Input

Output

$1.25

$0.125

$10.00


GPT-5-Codex is bringing developers’ coding experience to a new level.  Don’t just write code. Let’s redefine what’s possible. Start building with GPT-5-Codex today  and turn your bold ideas into reality now powered by the latest innovation in Azure AI Foundry.

 

Updated Sep 23, 2025
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