1d ago

OpenAI updates GPT-5.5 Instant to improve factuality, enhance multilingual performance, and reduce sycophancy

The update also addresses overly concise model responses.

0
Original post

GPT-5.5-Instant was updated today. I suspect this went live for me about a week ago as Instant suddenly began to use writing blocks in responses out of the blue.

1:24 PM · May 28, 2026 View on X
Reposted by

new 5.5 instant model in chatgpt:

Michelle PokrassMichelle Pokrass@michpokrass

we shipped a new version of gpt-5.5 instant today. the previous model was too bullet pilled. the new one improves on some other important dimensions: sycophancy, factuality, and multilingual performance. hope you'll like it! always interested in feedback

4:40 AM · May 29, 2026 · 168.4K Views
9:39 AM · May 29, 2026 · 95.6K Views

we shipped a new version of gpt-5.5 instant today. the previous model was too bullet pilled. the new one improves on some other important dimensions: sycophancy, factuality, and multilingual performance. hope you'll like it! always interested in feedback

4:40 AM · May 29, 2026 · 168.4K Views

track our ships in the release notes https://help.openai.com/en/articles/6825453-chatgpt-release-notes

Michelle PokrassMichelle Pokrass@michpokrass

we shipped a new version of gpt-5.5 instant today. the previous model was too bullet pilled. the new one improves on some other important dimensions: sycophancy, factuality, and multilingual performance. hope you'll like it! always interested in feedback

4:40 AM · May 29, 2026 · 168.4K Views
4:41 AM · May 29, 2026 · 9.5K Views
OpenAI updates GPT-5.5 Instant to improve factuality, enhance multilingual performance, and reduce sycophancy · Digg