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OpenAI makes GPT-5.5 Instant the new default for ChatGPT
OpenAI has updated ChatGPT’s default model to GPT-5.5 Instant, promising clearer and more accurate answers, lower hallucination rates, and stronger personalization controls.
Key Takeaways
- OpenAI says GPT-5.5 Instant is now the default ChatGPT model.
- The company claims substantially lower hallucination rates versus GPT-5.3 Instant.
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DT Editorial AI··via openai.com