Anthropic has introduced its next-generation AI models: Claude Opus 4 and Claude Sonnet 4. These models offer two modes, quick responses and deeper thinking for complex problems. They are available on various platforms, including Anthropic API, Amazon Bedrock, and Google Cloud’s Vertex AI.
The Claude 4 update brings major enhancements, including new developer tools, improved memory functions, and streamlined agent workflows. A key feature is “extended thinking with tool use” in beta, allowing Claude to seamlessly switch between internal reasoning and external tools like web search. Additionally, the update supports parallel tool execution, better memory handling, and enhanced instruction-following capabilities, making Claude more powerful and efficient.
Claude Opus 4
Claude Opus 4 is the most advanced model, excelling in coding and delivering top-notch performance on complex tasks. It outperforms other models, working continuously for hours to complete tasks that require thousands of steps. This makes it ideal for long-running tasks that demand focused effort, significantly expanding the capabilities of AI agents.
Claude Opus 4 is excellent at coding and solving complex problems. Companies like Cursor, Replit, Block, Rakuten, and Cognition have tested it and seen impressive results. It’s great at understanding complex code, making precise changes, and debugging. It can even work independently for hours, delivering sustained performance and reliability. Overall, Claude Opus 4 is a top-notch tool for tackling challenging coding tasks.
Claude Sonnet 4
On the other hand, Claude Sonnet 4 is a crucial improvement over its previous version, exceling in coding with top-notch performance. It balances power and efficiency, making it suitable for various uses. While not as powerful as Opus 4, Sonnet 4 offers a great mix of capability and practicality, with enhanced control over its applications.
Claude Sonnet 4 has impressed companies like GitHub, Manus, iGent, Sourcegraph, and Augment Code with its impressive capabilities. It excels in following complex instructions, autonomous app development, problem-solving, and codebase navigation, with a significant reduction in navigation errors. Sonnet 4 also provides elegant code quality, higher success rates, and more precise code edits, making it a top choice for coding applications. In fact, GitHub will use Sonnet 4 to power its new coding agent in GitHub Copilot, further solidifying its position as a leading model for software development.
According to the company, Opus 4 pushes boundaries in coding, research, writing, and scientific discovery, while Sonnet 4 brings frontier performance to everyday use cases as an instant upgrade from Sonnet 3.7.
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