Introducing GPT-5.5
What changed
Introducing GPT-5.5, our smartest model yet—faster, more capable, and built for complex tasks like coding, research, and data analysis across tools.
Why it matters
A concrete addition to Practical AI: Tools, Models & Frameworks: it changes what's available to builders today rather than being general commentary.
How it compares
Related prior coverage to compare against:
- Introducing GPT-5
- Addendum to GPT-5 system card: GPT-5-Codex
- Introducing GPT-Rosalind for life sciences research
Sources
- Introducing GPT-5.5 (openai-blog)primary