Anthropic Unveils Claude 3.7 Sonnet: A Leap in AI Hybrid Reasoning

Anthropic has unveiled its latest AI model, Claude 3.7 Sonnet, marking a significant advancement in artificial intelligence with its pioneering hybrid reasoning capabilities. This model seamlessly integrates rapid response generation with in-depth, step-by-step problem-solving, offering users flexibility in how the AI processes tasks. Notably, Claude 3.7 Sonnet excels in complex domains such as mathematics, physics, and coding, providing tailored solutions for both quick queries and intricate challenges.

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• Introduction
• Hybrid Reasoning: A New AI Breakthrough
• Claude Code: A Game-Changer for Developers
• Pricing and Accessibility
• Anthropic’s Growth and Funding
• Conclusion

Hybrid Reasoning: A New AI Breakthrough

A standout feature of Claude 3.7 Sonnet is its extended thinking mode, which enhances the AI's performance on tasks requiring deeper reflection. This mode is particularly beneficial for developers and professionals dealing with complex problem-solving scenarios. While the standard mode is accessible across all plans—including Free, Pro, Team, and Enterprise—the extended thinking mode is exclusive to paid tiers, ensuring that users seeking advanced functionalities have tailored options.

Claude Code: A Game-Changer for Developers

In conjunction with this release, Anthropic has introduced Claude Code, an agentic coding tool currently available as a limited research preview. Claude Code empowers developers to delegate substantial engineering tasks directly from their terminal, streamlining workflows and enhancing productivity.

This tool can autonomously search and read code, edit files, write and run tests, commit and push code to repositories, and utilize command-line tools, all while keeping developers informed throughout the process.

Pricing and Accessibility

Claude 3.7 Sonnet maintains the same pricing as its predecessors, at $3 per million input tokens and $15 per million output tokens, which includes tokens used during the thinking process. This approach ensures that advanced AI capabilities are available to a broad spectrum of users without additional financial burden.

Anthropic’s Growth and Funding

This release comes on the heels of Anthropic finalizing a $3.5 billion funding round, elevating the company's valuation to $61.5 billion. This substantial investment underscores the confidence in Anthropic's innovative trajectory and its potential to redefine the AI landscape.

Conclusion

Claude 3.7 Sonnet and Claude Code represent significant strides in AI technology, offering users unparalleled flexibility, depth, and efficiency in their interactions with artificial intelligence. These developments not only enhance user experience but also set new benchmarks for AI capabilities in the industry.

Sander Schulhoff

Sander Schulhoff is the Founder of Learn Prompting and an ML Researcher at the University of Maryland. He created the first open-source Prompt Engineering guide, reaching 3M+ people and teaching them to use tools like ChatGPT. Sander also led a team behind Prompt Report, the most comprehensive study of prompting ever done, co-authored with researchers from the University of Maryland, OpenAI, Microsoft, Google, Princeton, Stanford, and other leading institutions. This 76-page survey analyzed 1,500+ academic papers and covered 200+ prompting techniques.

Footnotes

1. Anthropic. (2025). Claude 3.7 Sonnet and Claude Code. https://www.anthropic.com/news/claude-3-7-sonnet ↩

2. Verge, T. (2025). Anthropic’s new “hybrid reasoning” AI model is its smartest yet. The Verge. https://www.theverge.com/news/618440/anthropic-claude-3-7-sonnet-ai-model-hybrid-reasoning?utm_source=chatgpt.com ↩ ↩²

3. Reuters. (2025). Anthropic launches advanced AI hybrid reasoning model. Reuters. https://www.reuters.com/technology/artificial-intelligence/anthropic-launches-advanced-ai-hybrid-reasoning-model-2025-02-24/?utm_source=chatgpt.com ↩ ↩²

4. Reuters. (2025). AI startup Anthropic finalizing $3.5 billion funding round, WSJ reports. Reuters. https://www.reuters.com/technology/artificial-intelligence/ai-startup-anthropic-finalizing-35-billion-funding-round-wsj-reports-2025-02-24/?utm_source=chatgpt.com ↩ ↩²