Composer 2 - Cursor's next-generation AI programming model

Composer 2 Yes Cursor The new generation of AI programming model launched is positioned as “the optimal balance between intelligence and cost.” Pricing is only $2.50/million tokens, reaching a score of about 61% in the CursorBench test, with performance close to GPT-5.4 (medium) and significantly reduced costs. Obtained 61.7% in Terminal-Bench 2.0 (the previous version 1.5 only had 47.9%), surpassing Opus 4.6. For the first time, the model uses continuous pre-training and large-scale reinforcement learning technology, and has been officially launched on the Cursor platform.

Key features of Composer 2

• Intelligent code generation : Automatically generate complete code based on natural language description, supporting end-to-end implementation of complex programming tasks.
• Code editing and refactoring : Understand the existing code base and make intelligent modifications, automatically reconstruct and optimize the code structure.
• conversational programming : Collaborative coding with AI through context-aware continuous dialogue supports questioning and iterative development.
• Multi-language support : Supports mainstream programming languages such as Python, JavaScript, TypeScript, and Go.
• Tool integration : Deeply integrated with the Cursor editor, supporting terminal command execution and external tool invocation.
• Autonomous task execution : As an Agent model, it can independently plan and execute multi-step programming tasks, greatly improving development efficiency.

Technical principles of Composer 2

• Continued Pretraining : Cursor performs continuous pre-training on the basic model for the first time, further learns on general programming data, and enhances code understanding and generation capabilities.
• Scaled Reinforcement Learning : Optimize model behavior through large-scale reinforcement learning, allowing it to make better decisions in complex programming tasks and improve the quality of end-to-end task completion.
• Agent architecture design : Composer 2 adopts the Agent architecture, which can independently plan multi-step tasks, call tools (such as terminal, file operations) and interact with the environment to achieve automated delivery from requirements to code.
• Special optimization : In-depth optimization for programming scenarios, including special training for code completion, reconstruction, debugging and other tasks, making it perform well in programming benchmarks such as CursorBench and Terminal-Bench.

Key information and usage requirements for Composer 2

• Positioning : Programming model that optimally balances intelligence and cost
• Pricing :$2.50 / million input tokens
• Performance : CursorBench about 61%, Terminal-Bench 2.0 reaches 61.7%
• technology : First continuous pre-training + large-scale reinforcement learning
• Contrast : The performance is close to GPT-5.4 (medium), and the cost is greatly reduced.
• Platform : Cursor editor needs to be installed
• version : has been officially launched in Cursor, no additional configuration is required
• visit : Use directly through the Composer function entrance

Core Benefits of Composer 2

• Extremely cost-effective : At a low cost of $2.50/million tokens, it achieves an intelligence level close to GPT-5.4 (medium) and redefines the cost-efficiency boundary of programming models.
• performance jump : The score of Terminal-Bench 2.0 has increased significantly from 47.9% in version 1.5 to 61.7%, surpassing Opus 4.6, and the code understanding and execution capabilities have been significantly enhanced.
• technological breakthrough : For the first time, continuous pre-training and large-scale reinforcement learning are introduced, and the model’s reasoning and planning capabilities in complex programming tasks reach new heights.
• Ready to use : It has been officially launched on the Cursor platform. No additional configuration is required. You can directly experience cutting-edge programming intelligence through the Composer portal.
• Agent capabilities : Support independent planning and execution of multi-step programming tasks, achieving end-to-end automated development from requirement description to code delivery.

How to use Composer 2

• Install Cursor : Download and install the latest version Cursor Editor.
• Login account : Open Cursor, log in to your account and start using it.
• Enter Composer : Click the Composer icon in the left sidebar, or use shortcut keys to open the Composer panel.
• Start a conversation : Use natural language to describe programming requirements in the input box, and Composer 2 will automatically understand and generate code.
• iterative development : Continue the dialogue based on the generated results, ask for modifications, optimization or expansion of functions, and support multiple rounds of iterations.
• perform operations : Composer 2 can independently execute terminal commands, create and modify files, and call tools to complete complex tasks.
• Things to note : Make sure the network connection is stable and use the latest version of Cursor for the best experience.

Comparison of similar competing products of Composer 2

Products	Positioning	Advantages	Disadvantages	Terminal-Bench 2.0
Composer 2	Programming Agent with optimal balance between intelligence and cost	Extremely cost-effective, powerful Agent, end-to-end automation	The ecology is relatively closed, limited to the Cursor platform	61.7%
GitHub Copilot	Code completion and suggestion tools	GitHub has deep ecological integration and a large user base	Agent capability is weak and multi-step task automation is insufficient	–
Claude Code ( Opus 4.6)	Programming Agent Model	Strong code understanding ability and good versatility	The cost is higher and the price/performance ratio is not as good as Composer 2	58.0%
GPT-5.4	General large model programming capabilities	Top performance, strongest comprehensive ability	The cost is high, but Composer 2 is more economical with the same intelligence	75.1%

Composer 2 application scenarios

• Build project from scratch : Automatically generate complete project structure and code files based on natural language requirement descriptions to achieve rapid start-up and prototype development of new applications.
• Function module development : End-to-end implementation of specific business functions, such as user authentication systems, payment interface integration, data visualization charts and other complex modules.
• Code refactoring and optimization : Intelligently analyze the existing code base, automatically identify outdated code patterns and reconstruct them, improving system performance and long-term maintainability.
• Bug fix debugging : Accurately locate the source of code errors, generate targeted repair plans and automatically perform modifications, greatly shortening the debugging cycle. ©