At a Glance · AI-generated

OpenAI released GPT-5.5 on April 23, positioning it as a more powerful model with enhanced coding and mathematical capabilities, improved efficiency, and expanded cybersecurity safeguards. The fully retrained agentic model achieved strong benchmark scores and doubled the API pricing, though early testing revealed continued hallucination issues and mixed performance against competing models. By April 26, OpenAI discontinued its dedicated Codex coding model, integrating its functionality into GPT-5.5 as part of the company's shift toward rapid AI updates.