OpenAI 1M Token Context for ChatGPT Subscribers

OpenAI is expanding its 1 million-token context window for the GPT-5.6 Sol model to ChatGPT subscribers. This feature, previously only available via API access, is now accessible to users with Plus, Pro, or other subscription plans. Engineer Tibo from OpenAI announced this change, stating that the "switch has just been flipped" for ChatGPT accounts. This means subscribed users can manually enable the full context window of nearly 1.05 million tokens when using the Codex programming agent. What's interesting is that this larger context window allows Codex to retain more code, tool outputs, and conversation history before automatic compression. This is especially useful for professional tasks like large-scale codebase refactoring, complex debugging, and extended sessions. However, there's a catch. Enabling the million-token context can significantly accelerate subscription quota consumption. A single high-intensity use might exhaust a large portion of a weekly quota. The recommendation is to enable it only when absolutely necessary, not as a daily default, to avoid prematurely hitting usage limits. The bottom line: This expansion offers powerful capabilities for complex projects, but users need to be mindful of its impact on their subscription quotas.