ChatGPT Pro + Codex Push

OpenAI just filled in the missing middle of its pricing ladder: ChatGPT now has a $100-a-month Pro plan between the $20 Plus plan and the $200 Pro+ tier, and the pitch is simple — more Codex usage, access to GPT‑5.4 Pro, and higher limits for people who were hitting the ceiling on coding-heavy work. (help.openai.com) (windowsreport.com) The timing lines up with a second push: OpenAI’s Codex app is now on Windows, after a Mac launch in ChatGPT Business release notes, and the app is built to run multiple coding agents in parallel instead of making one assistant handle one repo at a time. (help.openai.com 1) (help.openai.com 2) Codex is not just autocomplete in a text box. OpenAI describes it as a coding agent that can navigate a repository, edit files, run commands, execute tests, and work either in a terminal, an integrated development environment, or the standalone Codex app. (help.openai.com) The desktop app changes the shape of that work. OpenAI says it uses isolated worktrees, shows reviewable diffs, supports reusable skills and automations, and lets users keep several long-running tasks going at once without hopping between windows. (help.openai.com 1) (help.openai.com 2) The model underneath this also moved. OpenAI introduced GPT‑5.4 on March 5, 2026, with a 1 million token context window, stronger coding, native computer-use abilities in Codex and the application programming interface, and a version called GPT‑5.4 Pro for harder tasks. (openai.com) A context window is the model’s working memory for one job. When OpenAI says 1 million tokens, it means GPT‑5.4 can keep track of far more code, documents, and instructions in one pass, which is the difference between helping with one file and keeping a whole project in its head. (openai.com) OpenAI’s own help pages say GPT‑5.4 Thinking is better at maintaining context during longer research and planning tasks, and that is exactly the kind of improvement a coding agent needs when a bug fix turns into a chain of tests, edits, and follow-up checks. (help.openai.com) (openai.com) The pricing change matters because Codex is no longer tucked away as a niche add-on. OpenAI says Codex is included with ChatGPT Plus, Pro, Business, and Enterprise or Edu plans, with higher rate limits on paid tiers, and outside coverage says the new $100 plan offers 5 times the Codex usage of Plus. (help.openai.com) (venturebeat.com) That creates a new default for small software teams. Instead of one founder occasionally pasting code into a chat, OpenAI is selling a setup where a few people can keep several agents running in the background, review diffs like junior teammates, and pay a fixed monthly bill instead of improvising around free limits. (help.openai.com 1) (help.openai.com 2) (windowsreport.com) It also nudges more serious work onto subscriptions rather than casual access. OpenAI’s help center says free and Go access to Codex is temporary, while paid plans get the steadier inclusion and higher limits, so the company is putting the heavier agent workflow behind recurring payment instead of treating it like a demo. (help.openai.com) If you build products on top of OpenAI, the practical shift is not just “new plan available.” The practical shift is that context length, coding agents, desktop orchestration, and predictable rate limits are being bundled together as the normal paid workbench for developers in April 2026. (openai.com) (help.openai.com) (help.openai.com)