OpenAI GPT-5.6 Launch: New ChatGPT Features Explained

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OpenAI has rolled out a major set of performance upgrades across ChatGPT’s free and premium subscription tiers. The update introduces the new GPT-5.6 model family, making high-speed multimodal processing available to free users while equipping paid subscribers with enhanced reasoning capabilities and tailored output controls.

Upgrades for Free Tier Users: GPT-5.6 Luna and Unlimited Text Messaging

Free ChatGPT users are being transitioned from GPT-5.5 to GPT-5.6 Luna, which becomes the default model for non-paying accounts. Key highlights include:

  • Unlimited Text Conversations: Standard message volume limits for basic text chats have been removed for free users. Rate caps will remain in place for advanced features like file uploads and image processing.
  • Expanded Context Capacity: GPT-5.6 Luna supports an impressive 1,050,000-token context window along with up to 128,000 output tokens, making it the fastest and most cost-effective variant in the GPT-5.6 series.
  • Multimodal and Reasoning Features:The model handles text and...

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