A new milestone in AI programming: the Claude 4 series re-released
With AI technology advancing at a rapid pace, Anthropic is once again leading the way with the official release of the highly anticipated Claude 4 series of models. This release contains two important editions:Claude Opus 4 respond in singing Claude Sonnet 4, both of which are deeply optimized specifically for programming, advanced reasoning, and AI intelligences tasks.
AI Cloud Native has been adapted Claude Opus 4 & Claude Sonnet 4
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Anthropic CEO Dario Amodei made the big announcement himself at the company's first developer conference. Unlike previous product launches, this conference had a very clear theme - theCode with Claude, which is aimed directly at the core application scenario of programming.
Product Positioning and Usability
| model version | Main features | Applicable Scenarios | user group |
|---|---|---|---|
| Claude Opus 4 | World's top programming models for complex long-duration tasks | Large-scale project refactoring, complex algorithm development | Paid users (Pro/Max/Team/Enterprise) |
| Claude Sonnet 4 | Lightweight, faster response, excellent programming and reasoning skills | Daily development, real-time response scenarios | Includes free users |
Notably, the Claude 4 series serves as a hybrid reasoning model, offering two modes of operation: a fast response mode for everyday interactions and an extended thinking mode specialized for complex tasks requiring deep reasoning.
pricing strategy
The Claude 4 series continues the standard of its predecessor model in terms of pricing:
- Opus 4: $15 per million Token input, $75 per million Token output
- Sonnet 4: $3 per million tokens input, $15 per million tokens output
Performance Breakthrough: Programming Capabilities that Fully Outperform the Competition
Excellent benchmarking performance
The Claude 4 series has achieved impressive results in a number of authoritative benchmarks, particularly in programming-related reviews:
| Test items | Claude Opus 4 | Claude Sonnet 4 | Comparative Advantages |
|---|---|---|---|
| SWE-bench | 72.5% | 72.7% | Outperforms competitors like the Gemini 2.5 Pro |
| SWE-bench (parallel testing) | 79.4% | 80.2% | Significant improvement over Sonnet 3.7 |
| Terminal-bench | 43.2% | 35.5% | industry leader |
| Terminal-bench (parallel testing) | 50.0% | 41.3% | Dramatic increase in utility |
Comprehensive capacity enhancement
In addition to its programming capabilities, the Claude 4 Series also demonstrates strength in other key areas:
- Graduate level reasoning(MMMLU): tied for first place with OpenAI o3
- Multilingual Q&A: Maintaining the top level
- Tool-use capacity: nearly 101 TP3T ahead of second-place OpenAI o3
- Instruction compliance accuracy: Significant improvement in reducing the "shortcutting" behavior of 65%.
Technological innovation: a perfect blend of reasoning and tool use
Breakthrough Expanded Thinking Features
One of the most revolutionary features of the Claude 4 series is theExtended Thinking on Tool Aids. This beta feature allows the model to flexibly invoke various tools, such as web search, code execution, etc., during deep thinking, enabling a seamless switch between reasoning and action.
This design is closer to the human cognitive model - when we think about complex problems, we often need to consult information, perform calculations, record notes, and then continue reasoning.Claude 4 digitizes this process, allowing AI to work like a human expert.
Revolutionizing Memory Skills
Claude Opus 4 is able to when the developer authorizes the model to access local files:
- Create and maintain "memory files" to store critical information
- Extract important facts and maintain contextual coherence
- Gradual accumulation of tacit knowledge to enhance long-term task implementation capacity
As a vivid example, Opus 4 demonstrated impressive long-term memory and planning capabilities by creating detailed "navigation guides" while playing Pokémon Go, keeping track of game progress, strategy points, and important information.
Thought-starter mechanism
To optimize the user experience, Anthropic also introduces a "thought summary" function. When the reasoning chain of a model is too long (about 5% of complex tasks), the system will automatically call a small model to compress and summarize the ideas to ensure that the final information presented is concise and clear.
Real-world validation: real experiences and stunning examples from developers
Breakthrough in continuous work capacity
Early test customer feedback shows that the Claude 4 Series has demonstrated an unprecedented ability to keep working:
- Rakuten: Successful completion of a demanding open source code refactoring task.7 hours of continuous stable operation
- Block: For the first time in its "goose" intelligence, Opus 4 significantly improves the quality of code during the editing and debugging process while maintaining stable performance.
- Replit: Dramatic increase in accuracy when processing complex changes across multiple files
Amazing one-click case generation
Real-world testing by the developer community demonstrates the power of Claude 4:
Case 1: 3D space creation With just one prompt from renowned AI blogger Ethan Mollick: "Create the 3D space of the novel Piranesi with p5.js", Claude 4 generated a beautiful 3D demo with birds, water currents and lighting effects.
Case 2: Full Game Development Another tester, Peter Yang, verified Claude 4's game development capabilities, building a fully functional Tetris game in one go, complete with highlight effects and a well-designed UI.
Case 3: Browser Proxy Generation One developer was able to get Claude 4 to create a working browser intelligence, complete with API and front-end code, with just a single prompt, and the results were so good that he exclaimed, "It's impossible, I've never seen an AI do anything like this!"
Case 4: Rapid Development of CRM Dashboards In real-world testing, Claude 4 was able to generate a fully functional CRM dashboard in less than 30 seconds, which is shockingly fast.
Positive feedback from industry customers
Major well-known platforms and tools have already started integrating Claude 4:
- Cursor: Coding skills are at the top of the industry, making leaps in understanding complex code bases
- GitHub: Claude 4 chosen as base model for next-generation GitHub Copilot
- Sourcegraph:: Believed to be able to focus more on core issues and write better structured code
Eco-Building: Claude Code and Future Development Models
Claude Code is fully open
With the release of Claude 4, Anthropic has officially launched theClaude CodeThis revolutionary programming assistant tool. After months of preview testing, Claude Code is now available to all developers, supporting a wide range of development environments:
- terminal integration: Using Claude Code directly from the command line
- IDE Support: Beta extensions for VS Code and JetBrains
- GitHub Integration: Can @Claude Code in a Pull Request to automate code review and fixing tasks
A major upgrade to the API ecosystem
The Anthropic API ushers in four important new features:
- Code execution tools: Allow the model to run the code and see the results
- MCP Connectors: Support seamless integration with a variety of external systems
- Files API: Enhanced document processing capabilities
- Extended Cache: Supports up to 1 hour of prompt caching, dramatically reducing costs
Changes in the development model
Anthropic's internal data shows that widespread use of AI tools has dramatically reduced the average onboarding time for new hires from 2-3 weeks to 2-3 days. This change heralds a fundamental shift in the software development model.
As CEO Dario Amodei says, "The history of programming is a continuous evolution from low-level to high-level languages. Now, we just need to describe requirements in natural language."
future outlook
When the cost of software development drops dramatically, the entire economy and business structure will change profoundly. In the future, we may see it:
- On-demand, low-cost one-off software creation
- The redefinition of the developer's role
- "Agent team" style collaboration model
- More personalized and customized software solutions
The release of the Claude 4 series marks a brand new era for AI programming assistants. From simple code completion to complex system design, from short task execution to long project management, AI is redefining our perception and expectations of programming tools. For developers, now is the perfect time to embrace this change and explore the new possibilities of AI programming.
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