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Launch1w ago

GPT-5.5 Released, OpenAI Codex Integration Explored

Simon Willison1 min brief

In brief

  • OpenAI has released GPT-5.5, a powerful new AI model now available to paid ChatGPT subscribers and through its OpenAI Codex service.
  • While the API version is still under development, early users highlight its speed and accuracy in executing complex tasks.
  • A key discussion revolves around OpenClaw, an integration tool that connects AI agents with subscriptions.
  • After Anthropic blocked OpenClaw, OpenAI stepped in, allowing OpenClaw to integrate with their Codex CLI tool.
    • This move supports developers who use ChatGPT subscriptions for coding tools like JetBrains and Xcode.
  • Looking ahead, OpenAI’s commitment to open-source tools and third-party integrations suggests more flexibility for developers.
  • The availability of GPT-5.5 in APIs could further unlock its potential across various applications.

Terms in this brief

Codex CLI tool
A command-line interface tool that allows developers to integrate OpenAI's Codex AI model into their coding workflows. It enables users to perform tasks like code generation and debugging directly from the terminal.

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