ChatGPT vs Claude

GPT-6 Astra is OpenAI's model for extended work involving computers, browsers, complex code and source material. OpenAI describes improvements over the preceding Sol in professional tasks, tool use and adherence to assigned scope, emphasizing continued execution after reviewing evidence. Connected runtimes provide software operation and file creation, combining the model's decisions about changes with external tools that carry them out. Development, research and document production can therefore form a workflow spanning applications, from gathering information through revising deliverables and checking results. The model detail page's specifications and evaluation analysis cover context and output limits, reasoning settings, computer-use and tool-call conditions, code repair, document analysis and multi-step automation.

Claude Opus 5.5 is Anthropic's general model for complex coding, research and document work that spans several steps. The company says it improves on the preceding Opus at completing large code changes and fixing software inefficiencies while reducing the time and cost of typical work. Anthropic also reports clearer writing that leads with key points and stronger resistance to instructions hidden in external material, helping people review work as it progresses. Current AIB results place coding and document work in the top tier and automation in the upper tier, without guaranteeing the same outcome on each task. Check sources and figures in research answers, set checkpoints and tool permissions for long jobs, and review changes that are difficult to reverse.