Best AI Agents for Cursor

Claude Sonnet 3.5 sets a new standard for AI performance with outstanding benchmarks in graduate-level reasoning (GPQA), undergraduate-level knowledge (MMLU), and coding proficiency (HumanEval). This model shows significant improvements in understanding nuance, humor, and complex instructions, while consistently producing high-quality content that resonates naturally with users. Operating at twice the speed of Claude Opus 3, it delivers faster and more efficient results, making it perfect for use cases such as context-sensitive customer support and multi-step workflow automation. Claude Sonnet 3.5 is available for free on Claude.ai and the Claude iOS app, with higher rate limits for Claude Pro and Team plan subscribers. It’s also accessible through the Anthropic API, Amazon Bedrock, and Google Cloud’s Vertex AI, making it an accessible and cost-effective choice for businesses and developers.

Claude Sonnet 3.7, a state-of-the-art AI model by Anthropic, is designed for versatility, offering users the option to switch between quick, efficient responses and deeper, more reflective answers. This dynamic model shines in complex problem-solving scenarios, where high-level reasoning and nuanced understanding are crucial. By allowing Claude to pause for self-reflection before answering, Sonnet 3.7 excels in tasks that demand deep analysis, such as coding, natural language processing, and critical thinking applications. Its flexibility makes it an invaluable tool for professionals and organizations looking for an adaptable AI that delivers both speed and thoughtful insights.

Claude Sonnet 4 is an advanced AI model that enhances coding, reasoning, and problem-solving capabilities, perfect for developers and businesses in need of reliable AI support. This new version of Claude Sonnet significantly improves its predecessor’s capabilities by excelling in coding tasks and delivering precise, clear reasoning. With a 72.7% score on SWE-bench, it offers exceptional performance in software development, app creation, and problem-solving. Claude Sonnet 4’s improved handling of complex instructions and reduced errors in codebase navigation make it the go-to choice for enhancing productivity in technical workflows and software projects.

Cognee is an innovative open-source AI memory engine that converts unprocessed data into well-structured knowledge graphs, significantly improving the precision and contextual comprehension of AI agents. It accommodates a variety of data formats, such as unstructured text, media files, PDFs, and tables, while allowing seamless integration with multiple data sources. By utilizing modular ECL pipelines, Cognee efficiently processes and organizes data, facilitating the swift retrieval of pertinent information by AI agents. It is designed to work harmoniously with both vector and graph databases and is compatible with prominent LLM frameworks, including OpenAI, LlamaIndex, and LangChain. Notable features encompass customizable storage solutions, RDF-based ontologies for intelligent data structuring, and the capability to operate on-premises, which promotes data privacy and regulatory compliance. Additionally, Cognee boasts a distributed system that is scalable and adept at managing substantial data volumes, all while aiming to minimize AI hallucinations by providing a cohesive and interconnected data environment. This makes it a vital resource for developers looking to enhance the capabilities of their AI applications.

Superblocks is a programmable, IDE that allows developers to create any internal app, workflow or scheduled job in a fraction of time and cost. Next month's roadmap will be available this week. Rapidly create apps, workflows and jobs that are connected to your data. Secure your data with granular permissions (RBAC), SSO and audit logs. Monitor production and deploy with Git. You can extend anything with code. You don't need to know HTML, CSS, or React. Drag and drop components, connect them with data, and make your app dynamic using trigger APIs. To improve the speed of your support team, you can create custom KYC, Compliance, AML and credit approval tools. Stop wasting time with CLIs. You can quickly create admin panels for your datastores so you can read, write, or update customer data using tables, forms, charts, and other tools. You can track deployment status and monitor versions from one pane of glass. Any deployment system you use can be read/written to. Clark is the first AI agent purpose-built for securely creating internal enterprise apps at scale. Designed to work within your company’s existing infrastructure, Clark uses your design systems, access controls, and private APIs to generate fully compliant internal tools. With the ability to build through AI prompts, drag-and-drop interfaces, or your favorite IDE, Clark unites business users and developers on a single governed platform.

Zeabur is a cutting-edge AI DevOps assistant built to simplify cloud deployment for developers of all skill levels. By allowing users to chat with its AI agent, it transforms the complex process of deployment into an intuitive and conversational experience. Through integrations with tools like Cursor, developers can push their projects live without ever leaving their development environment. Zeabur supports every layer of modern development — frontend, backend, databases, and even AI-generated code — all deployable within seconds. Its automatic framework detection, built-in CI/CD, auto-scaling, and domain management make deployment smoother than ever. Pricing is fair and usage-based, ensuring teams pay only for the exact resources consumed. Developers can deploy through shared clusters, their own servers, or Zeabur-managed VPS options from providers like Hetzner and DigitalOcean. With its expanding template marketplace for apps like WordPress, Supabase, and Dify, Zeabur empowers creators to bring their ideas online instantly and effortlessly.

Chrome Sidekick is an innovative browser extension that functions as an AI sidebar agent integrated into every webpage you visit. It has the capability to analyze both the HTML structure and visual elements of pages, enabling it to provide explanations, extract data automatically, execute workflows, and automate complex multi-step tasks. Users are empowered to create reusable Workflows from their instructions, establish connections with external applications through MCP (a connector protocol), and use voice commands for a hands-free experience. The assistant is designed to retain memory, allowing it to remember context and efficiently manage follow-up tasks over time. Additional features include the ability to switch between different AI models, use custom API keys, toggle between light and dark modes, and remotely control the tool via Cursor or Claude Desktop. Essentially, Chrome Sidekick serves as a companion on every webpage, making it easy to inquire about the current site, automate various actions, and extract necessary information without the hassle of constant switching. This seamless integration enhances productivity and streamlines your browsing experience.

Signals AI is an innovative platform focused on engineering intelligence, which consistently observes development processes and tool utilization to provide immediate insights and identify potential risks. By merging conventional engineering metrics, such as deployment frequency and project activity, with AI-enhanced monitoring of tool usage, it can automatically uncover possible delays, bottlenecks, or escalating issues. The platform seamlessly integrates with tools like Jira, offering visibility into project execution, investments, deployments, and team performance metrics at a granular level. It sends out real-time notifications for critical events like build failures, deployment risks, and SLA violations directly within collaboration platforms, such as Microsoft Teams. Additionally, it generates weekly summaries of essential operational metrics, including cycle time and deployment frequency, along with identifying project hotspots. The dashboards provide valuable AI-driven insights, which encompass root-cause analysis and suggested remedies, empowering engineering leaders to take proactive measures and enhance overall productivity. This proactive approach ensures that teams can address issues efficiently before they impact project timelines.

OpenAI Codex is a powerful AI tool that helps developers accelerate their coding workflows by automating a variety of tasks. From writing features and running tests to proposing pull requests (PRs) and answering questions about the codebase, Codex can take on these tasks in parallel. Each task runs in its own secure cloud environment, preloaded with the relevant repository, ensuring safe and efficient operations. Codex is available to ChatGPT Pro, Enterprise, and Team users, with future access for Plus and Edu users. By using Codex, developers can offload repetitive tasks, speed up feature development, and focus more on higher-level, strategic work.

Claude Sonnet 4.5 represents Anthropic's latest advancement in AI, crafted to thrive in extended coding environments, complex workflows, and heavy computational tasks while prioritizing safety and alignment. It sets new benchmarks with its top-tier performance on the SWE-bench Verified benchmark for software engineering and excels in the OSWorld benchmark for computer usage, demonstrating an impressive capacity to maintain concentration for over 30 hours on intricate, multi-step assignments. Enhancements in tool management, memory capabilities, and context interpretation empower the model to engage in more advanced reasoning, leading to a better grasp of various fields, including finance, law, and STEM, as well as a deeper understanding of coding intricacies. The system incorporates features for context editing and memory management, facilitating prolonged dialogues or multi-agent collaborations, while it also permits code execution and the generation of files within Claude applications. Deployed at AI Safety Level 3 (ASL-3), Sonnet 4.5 is equipped with classifiers that guard against inputs or outputs related to hazardous domains and includes defenses against prompt injection, ensuring a more secure interaction. This model signifies a significant leap forward in the intelligent automation of complex tasks, aiming to reshape how users engage with AI technologies.

Claude Sonnet 4.6 represents a comprehensive upgrade to Anthropic’s Sonnet model line, delivering expanded capabilities across coding, reasoning, computer interaction, and professional knowledge tasks. With a beta 1M token context window, the model can process massive datasets such as full repositories, extended legal agreements, or multi-document research projects in a single request. Developers report improved reliability, better instruction adherence, and fewer hallucinations, making long working sessions smoother and more predictable. Early users preferred Sonnet 4.6 over its predecessor in the majority of tests and often selected it over Opus 4.5 for practical coding work. The model’s computer-use skills have advanced significantly, enabling it to navigate spreadsheets, complete web forms, and manage multi-tab workflows with near human-level competence in many cases. Benchmark evaluations show consistent performance gains across reasoning, coding, and long-horizon planning tasks. In competitive simulations like Vending-Bench Arena, Sonnet 4.6 demonstrated strategic capacity-building and profit optimization over time. On the developer platform, it supports adaptive and extended thinking modes, context compaction, and improved tool integration for greater efficiency. Claude’s API tools now automatically execute filtering and code-processing steps to enhance search and token optimization. Sonnet 4.6 is available across Claude.ai, Cowork, Claude Code, the API, and major cloud providers at the same starting price as Sonnet 4.5.