ChatGPT Context Window
ChatGPT now processes 256K tokens across all plans when using the 'thinking' feature, a major upgrade.
OpenAI has significantly upgraded ChatGPT's context window capacity to 256,000 tokens when utilizing the 'thinking' feature, a discovery made by users examining OpenAI's official documentation. This enhancement applies universally across ChatGPT plans, from free tiers to ChatGPT Plus and Enterprise subscriptions. The 256K token window represents a major leap in the model's ability to process lengthy documents, maintain context in extended conversations, and handle complex multi-step reasoning tasks. Unlike previous context window increases that were tied to specific model versions or required API usage, this upgrade appears to be accessible through the standard ChatGPT interface when the thinking feature is activated, though exact implementation details remain unclear from the limited documentation.
- Context window expanded to 256,000 tokens when using 'thinking' feature across all ChatGPT plans
- Change discovered in OpenAI documentation rather than through formal announcement
- Enables processing of book-length documents and maintaining coherence in extended conversations
Why It Matters
Professionals can now analyze entire reports, legal documents, or codebases in one session without losing context.