Anthropic has rolled out Claude 4 Sonnet and Claude 4 Opus to its users, bringing a host of upgrades to the AI models running its chatbot.

On Thursday, Anthropic announced significant upgrades to its AI assistant Claude, extending its research capabilities to run for up to 45 minutes before delivering comprehensive reports. The company also expanded its integration options, allowing Claude to connect with popular third-party services.

Claude 4 Sonnet is a leaner model, with improvements built on Anthropic's Claude 3.7 Sonnet model. The 3.7 model often had problems with overeagerness and sometimes did more than the person asked it to do, Amodei said. While it's a less resource-intensive model, it still performs well, he said.