OpenAI Super App: ChatGPT switches to Codex, farewell to the "chat category"

In plain terms. Ben Thompson describes on Stratechery (July 14, 2026) a major product pivot at OpenAI: the new ChatGPT is no longer an evolution of chat - it's Codex. The shift raises the question of platform strategy: OpenAI is building a super app that is agent-first, even if it means liquidating the category it invented itself.

Since the launch of ChatGPT at the end of 2022, the "chat category" has defined the convenience of public AI. Thompson observes that the new ChatGPT, post GPT-5.6, actually inherits the Codex stack: agent, heavy tool use, code writing integrated into the flow. It is no longer optimized for conversation, but for the execution of multi-step tasks. The trade-off is clear: losing the simplicity of "instant chat" to gain the functionality of an "agent that does the work."

Two theses emerge. One - OpenAI is positioning itself as a super app agentic (like WeChat), with ChatGPT as the single surface and Codex as the engine; two - the "chat" remains, but becomes an ambient product (voice, wearables) that OpenAI partially leaves to Anthropic or mobile operating systems. The follow-up #999 on KEEL CRUX already traced the release of GPT-5.6 as a "workhorse." The July move reinforces the thesis: OpenAI's strategic product is no longer the chat, it's the agent layer + editor.

Under the hood - What we can verify today based on Stratechery's observations: the new ChatGPT app exposes Codex-type workflows (code editing, synchronized tool use, agent flow). What we cannot affirm without an official announcement from OpenAI: the end of the "pure chat" model on the API side. GPT-5.6 in API remains usable for light chat and nothing indicates a deprecation.

So what. For Anthropic, a window opens: to take over the "chat category" that OpenAI is abandoning on the consumer surface - Claude is already positioned for it. For AI-native developers: OpenAI's assistant API becomes a direct product competitor. Building a "vertical ChatGPT" is now a bet against an OpenAI that has itself switched to the agent. For the market: the AI super app is taking shape. To watch: OpenAI's voice and wearables strategy, and whether Anthropic capitalizes on "classic" chat.