OpenAI drops GPT-5.5 with enhanced coding, reasoning

GPT-5.5 pushes the frontier on agentic, multi-step execution rather than just raw text generation. The emphasis on operating "across tools" hints at native computer-use capabilities or expanded API integrations. Faster speeds for a flagship model suggest significant architectural efficiency gains or new inference hardware. Highlighting coding and research implies improved long-context reasoning and reduced hallucination rates for technical tasks. The release raises the bar for the upcoming generation of frontier models from Anthropic and Google.