OpenAI launches GPT-5.5 Instant with improved performance
OpenAI has launched GPT-5.5 Instant, an updated standard model for ChatGPT that promises smarter and more accurate responses with fewer hallucinations and improved personalisation controls.

What happened?
OpenAI has introduced GPT-5.5 Instant as the new standard model for ChatGPT. The update aims to deliver smarter and more precise responses to users. A central improvement is a noticeable reduction in so-called hallucinations, where the AI model generates incorrect or fabricated information. Furthermore, the model has been equipped with new controls for personalisation.
Key facts
| Modellnamn | GPT-5.5 Instant |
|---|---|
| Lanseringsdatum | 2024-05-24 |
| Huvudförbättringar | Smartare svar, minskade hallucinationer, personalisering |
”GPT-5.5 Instant updates ChatGPT’s default model with smarter, more accurate answers, reduced hallucinations, and improved personalization controls.”
Why it matters
This upgrade is significant as it directly impacts the quality and reliability of interactions with ChatGPT. By reducing hallucinations, the tool becomes more dependable for information retrieval and decision-making. Improved personalisation can lead to a more tailored user experience, increasing the relevance of generated outputs.
Who is affected?
ChatGPT users, ranging from private individuals to corporations, are directly affected by this update through enhanced performance. Developers building applications on top of OpenAI's API will also benefit from a more stable and capable base model. Companies implementing AI solutions based on ChatGPT can expect superior output and higher efficiency.
Impact on the EU
GPT-5.5 Instant is available globally, including within the EU. Improved personalisation and data processing related to European users must comply with current EU legislation, such as the GDPR.
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