FrontierThe story, in brief
GPT-5.5 System Card
GPT-5.5 drops with new safety benchmarks and capability metrics. Here's what changed.
The KeyNews take
Why it matters
OpenAI released GPT-5.5 with updated system card, detailing new safety evaluations, capability benchmarks, and model improvements. This is a direct competitor capability update that affects enterprise deployment decisions.
The key facts
4 to knowGPT-5.5 system card published
New safety evaluation framework included
Model capability metrics updated
Published April 23, 2026
Go to the source
OpenAI Blogopenai.com