There are two new models, Claude Opus 4 and Claude Sonnet 4, and Anthropic says they're both "setting new standards" for what you can expect from AI. Coding is a big focus, and the models are said to have achieved the highest scores to date on two widely used AI coding benchmarking tools, SWE-bench and Terminal-bench. Claude 4 models can actually work for hours on projects without any user input, Anthropic says.
Away from code generation and analysis, the models also bring with them extended thinking, the ability to work on multiple tasks in parallel, and improved memory. They're better at integrating web searches as needed, and to check for supporting information and make sure they're on the right track with their answers.
New AI model launches usually come with benchmark charts showing improvements—and this one is no different. Credit: AnthropicAnthropic is now making its Claude Code suite of tools available more generally as well, another step towards agentic AI that can work autonomously, without continuous help from flesh and blood users. In a demo video, Claude 4 models are shown compiling research papers from the web, putting together an online ordering system, and extracting information from documents to create actionable tasks.
Claude 4 is available now (but you'll need to pay for the more advanced model)
The path to releasing these Claude 4 models wasn't all smooth: Anthropic says its safety advice partner warned against releasing earlier versions of the models because of their tendency to "'scheme' and deceive." Those issues have now been worked out, apparently, but it's a reminder that as AI models get increasingly powerful, they also need to come with improved guardrails and safety features attached.
The new models are available inside Claude now. Credit: LifehackerTo be honest, I'm always a bit stuck when it comes to how to make full use of AI chatbots and their latest upgrades. They can definitely save time when running certain web searches and researching topics online, but I don't fully trust the results, or AI's ability to decide what is relevant and what isn't—I'd still much rather do the reading and summarizing myself, even if it's slower.
There's a new Extended Thinking Mode you can make use of. Credit: LifehackerAnthropic isn't the only AI company with new models to tout. At Google I/O 2025 earlier this week, the company unveiled improved coding assistance and thought summaries in Gemini, following on from the announcement of its best AI models yet a few weeks ago. OpenAI, meanwhile, has been testing its GPT-4.5 model since February, touting improvements in coding and problem solving.
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