Claude 4: New AI Models at the Service of Coding and Autonomous Thinking | Llm meaning software | Neuralnetfastai | Large language models wiki | Turtles AI

Anthropic today announced Claude Opus 4 and Claude Sonnet 4, advanced language models that significantly improve coding, reasoning, and autonomous task management capabilities. With features such as “extended thinking” and integration with development tools, these models deliver high performance for complex, long-running applications.

Key Points:

• Claude Opus 4: The flagship coding model, capable of running autonomously for hours on complex tasks.
• Claude Sonnet 4: An update to the previous model, it offers a balance of performance and cost that is suitable for a wide range of applications.
• Extended thinking: A feature that allows models to switch between internal reasoning and the use of external tools, such as web search.
• Claude Code: A developer tool that integrates Claude models directly into development environments such as VS Code and JetBrains.

Anthropic recently introduced two new advanced language models: Claude Opus 4 and Claude Sonnet 4. These models represent a significant step forward in coding and autonomous reasoning capabilities. Claude Opus 4 stands out as the company’s most powerful model, designed to handle complex and prolonged tasks with sustained concentration over several hours. It has been tested in demanding scenarios, such as autonomously completing complex games, demonstrating remarkable planning and long-term memory.

Claude Sonnet 4, on the other hand, represents a significant upgrade from version 3.7, offering improvements in encoding, reasoning and response accuracy. It is designed to balance performance and efficiency, making it suitable for a wide range of everyday applications.

One of the most notable innovations introduced with these models is the "extended thinking" feature, currently in beta. This allows models to alternate between internal reasoning and the use of external tools, such as web search, to improve the quality of responses. In addition, both models can run tools in parallel, follow instructions more precisely and, when accessing local files, demonstrate significantly improved memory capabilities, extracting and saving key data to maintain continuity over time.

To support developers, Anthropic has launched Claude Code, a tool that integrates Claude models directly into development environments like VS Code and JetBrains. Claude Code lets you see proposed changes directly in files, making it easy to review and track them within the editor interface. It also supports background tasks via GitHub Actions and offers an extensible SDK for building custom agents and applications.

Both models are available through the Anthropic API, Amazon Bedrock, and Google Cloud’s Vertex AI. Claude Opus 4 is included in the Claude Pro, Max, Team, and Enterprise plans, while Claude Sonnet 4 is also accessible to free users. Pricing remains in line with previous models: Opus 4 at $15/$75 per million tokens (input/output) and Sonnet 4 at $3/$15.

With these innovations, Anthropic aims to provide advanced tools for developing intelligent applications, improving efficiency and accuracy in the processes of coding and autonomous reasoning.