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Codex Adds Roughly 1M Users a Day — 6M to 8M in Days After GPT-5.6, and JetBrains Names It the Recommended Agent
Post-GPT-5.6, OpenAI's Codex hit 6M users by July 12, 7M about 24 hours later, and 8M by the weekend — adding on the order of a million users a day, with ChatGPT Work + Codex usage up 2.5x in a week. Separately, JetBrains benchmarked candidate coding agents on real tasks across Java (225), C# (38), and Python (90) and made Codex the recommended agent in JetBrains AI. For builders this is the clearest adoption-velocity signal of the quarter: the coding-agent land grab is now a distribution war fought inside IDEs, not just on benchmarks.
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