List of the Top 20 Context Engineering Tools in 2025

Rasa stands out as a pioneer in the field of generative conversational AI, providing businesses with the tools to enhance their customer service operations while cutting expenses through advanced AI assistant creation and management on a large scale. By integrating both pro-code and no-code solutions, our platform fosters collaboration among teams, leading to the development of more intelligent and efficient AI assistants, ultimately speeding up the realization of value. This innovative approach not only streamlines the building process but also ensures that companies can adapt quickly to changing customer needs.

LangChain is a versatile framework that simplifies the process of building, deploying, and managing LLM-based applications, offering developers a suite of powerful tools for creating reasoning-driven systems. The platform includes LangGraph for creating sophisticated agent-driven workflows and LangSmith for ensuring real-time visibility and optimization of AI agents. With LangChain, developers can integrate their own data and APIs into their applications, making them more dynamic and context-aware. It also provides fault-tolerant scalability for enterprise-level applications, ensuring that systems remain responsive under heavy traffic. LangChain’s modular nature allows it to be used in a variety of scenarios, from prototyping new ideas to scaling production-ready LLM applications, making it a valuable tool for businesses across industries.

While working with structured data is relatively straightforward, a significant majority—over 80%—of data generated today is unstructured, necessitating a different methodology. Machine learning plays a crucial role by transforming unstructured data into high-dimensional numerical vectors, which facilitates the discovery of underlying patterns and relationships within that data. However, conventional databases are not designed to handle vectors or embeddings, falling short in addressing the scalability and performance demands posed by unstructured data. Zilliz Cloud is a cutting-edge, cloud-native vector database that efficiently stores, indexes, and searches through billions of embedding vectors, enabling sophisticated enterprise-level applications like similarity search, recommendation systems, and anomaly detection. Built upon the widely-used open-source vector database Milvus, Zilliz Cloud seamlessly integrates with vectorizers from notable providers such as OpenAI, Cohere, and HuggingFace, among others. This dedicated platform is specifically engineered to tackle the complexities of managing vast numbers of embeddings, simplifying the process of developing scalable applications that can meet the needs of modern data challenges. Moreover, Zilliz Cloud not only enhances performance but also empowers organizations to harness the full potential of their unstructured data like never before.

Weaviate is an open-source vector database designed to help users efficiently manage data objects and vector embeddings generated from their preferred machine learning models, with the capability to scale seamlessly to handle billions of items. Users have the option to import their own vectors or make use of the provided vectorization modules, allowing for the indexing of extensive data sets that facilitate effective searching. By incorporating a variety of search techniques, including both keyword-focused and vector-based methods, Weaviate delivers an advanced search experience. Integrating large language models like GPT-3 can significantly improve search results, paving the way for next-generation search functionalities. In addition to its impressive search features, Weaviate's sophisticated vector database enables a wide range of innovative applications. Users can perform swift pure vector similarity searches across both raw vectors and data objects, even with filters in place to refine results. The ability to combine keyword searches with vector methods ensures optimal outcomes, while the integration of generative models with their data empowers users to undertake complex tasks such as engaging in Q&A sessions over their datasets. This capability not only enhances the user's search experience but also opens up new avenues for creativity in application development, making Weaviate a versatile tool in the realm of data management and search technology. Ultimately, Weaviate stands out as a platform that not only improves search functionalities but also fosters innovation in how applications are built and utilized.

Vespa is designed for Big Data and AI, operating seamlessly online with unmatched efficiency, regardless of scale. It serves as a comprehensive search engine and vector database, enabling vector search (ANN), lexical search, and structured data queries all within a single request. The platform incorporates integrated machine-learning model inference, allowing users to leverage AI for real-time data interpretation. Developers often utilize Vespa to create recommendation systems that combine swift vector search capabilities with filtering and machine-learning model assessments for the items. To effectively build robust online applications that merge data with AI, it's essential to have more than just isolated solutions; you require a cohesive platform that unifies data processing and computing to ensure genuine scalability and reliability, while also preserving your innovative freedom—something that only Vespa accomplishes. With Vespa's established ability to scale and maintain high availability, it empowers users to develop search applications that are not just production-ready but also customizable to fit a wide array of features and requirements. This flexibility and power make Vespa an invaluable tool in the ever-evolving landscape of data-driven applications.

LangGraph empowers users to achieve greater accuracy and control by facilitating the development of agents that can adeptly handle complex tasks. It serves as a robust platform for building and scaling applications driven by these intelligent agents. The platform’s versatile structure supports a range of control strategies, such as single-agent, multi-agent, hierarchical, and sequential flows, effectively meeting the demands of complicated real-world scenarios. To ensure dependability, simple integration of moderation and quality loops allows agents to stay aligned with their goals. Moreover, LangGraph provides the tools to create customizable templates for cognitive architecture, enabling straightforward configuration of tools, prompts, and models through LangGraph Platform Assistants. With a built-in stateful design, LangGraph agents collaborate with humans by preparing work for review and waiting for consent before proceeding with actions. Users have the capability to oversee the decision-making processes of the agents, while the "time-travel" function offers the ability to revert and modify prior actions for enhanced accuracy. This adaptability not only ensures effective task execution but also allows agents to respond to evolving needs and constructive feedback, fostering continuous improvement in their performance. As a result, LangGraph stands out as a powerful ally in navigating the complexities of task management and optimization.

A robust vector database tailored for efficient similarity searches at scale, Milvus is both open-source and exceptionally fast. It enables the storage, indexing, and management of extensive embedding vectors generated by deep neural networks or other machine learning methodologies. With Milvus, users can establish large-scale similarity search services in less than a minute, thanks to its user-friendly and intuitive SDKs available for multiple programming languages. The database is optimized for performance on various hardware and incorporates advanced indexing algorithms that can accelerate retrieval speeds by up to 10 times. Over a thousand enterprises leverage Milvus across diverse applications, showcasing its versatility. Its architecture ensures high resilience and reliability by isolating individual components, which enhances operational stability. Furthermore, Milvus's distributed and high-throughput capabilities position it as an excellent option for managing large volumes of vector data. The cloud-native approach of Milvus effectively separates compute and storage, facilitating seamless scalability and resource utilization. This makes Milvus not just a database, but a comprehensive solution for organizations looking to optimize their data-driven processes.

AI21 Studio offers API access to its Jurassic-1 large language models, which are utilized for text generation and comprehension in countless applications. With our advanced models, you can address any language-related task. The Jurassic-1 models excel at following natural language instructions and require only a handful of examples to adapt to new challenges. Our APIs are ideally suited for standard tasks, including paraphrasing and summarization, providing exceptional results at competitive prices without the need for extensive reworking. If you're looking to fine-tune a personalized model, achieving that is just a few clicks away. The training process is swift and cost-effective, allowing for immediate deployment of the models. By integrating an AI co-writer into your application, you can empower your users with enhanced features. Capabilities such as paraphrasing, long-form draft creation, content repurposing, and tailored auto-complete options can significantly boost user engagement, paving the way for your success and growth in the industry. Ultimately, our tools are designed to streamline your workflows and elevate the overall user experience.

Introducing the first-ever platform tailored specifically for prompt engineers, where users can log their OpenAI requests, examine their usage history, track performance metrics, and efficiently manage prompt templates. This innovative tool ensures that you will never misplace that ideal prompt again, allowing GPT to function effortlessly in production environments. Over 1,000 engineers have already entrusted this platform to version their prompts and effectively manage API usage. To begin incorporating your prompts into production, simply create an account on PromptLayer by selecting “log in” to initiate the process. After logging in, you’ll need to generate an API key, making sure to keep it stored safely. Once you’ve made a few requests, they will appear conveniently on the PromptLayer dashboard! Furthermore, you can utilize PromptLayer in conjunction with LangChain, a popular Python library that supports the creation of LLM applications through a range of beneficial features, including chains, agents, and memory functions. Currently, the primary way to access PromptLayer is through our Python wrapper library, which can be easily installed via pip. This efficient method will significantly elevate your workflow, optimizing your prompt engineering tasks while enhancing productivity. Additionally, the comprehensive analytics provided by PromptLayer can help you refine your strategies and improve the overall performance of your AI models.

Chroma is an open-source embedding database tailored for applications in artificial intelligence. It comes equipped with an extensive array of tools that simplify the process for developers looking to incorporate embedding technology into their projects. The primary goal of Chroma is to create a database that is capable of continuous learning and improvement over time. Users are encouraged to take part in the development process by reporting issues, submitting pull requests, or participating in our Discord community where they can offer feature suggestions and connect with fellow users. Your contributions are essential as we aim to refine Chroma's features and overall user experience, ensuring it meets the evolving needs of the AI community. Engaging with Chroma not only helps shape its future but also fosters a collaborative environment for innovation.

Flowise is an adaptable open-source platform that streamlines the process of developing customized Large Language Model (LLM) applications through an easy-to-use drag-and-drop interface, tailored for low-code development. It supports connections to various LLMs like LangChain and LlamaIndex, along with offering over 100 integrations to aid in the creation of AI agents and orchestration workflows. Furthermore, Flowise provides a range of APIs, SDKs, and embedded widgets that facilitate seamless integration into existing systems, guaranteeing compatibility across different platforms. This includes the capability to deploy applications in isolated environments utilizing local LLMs and vector databases. Consequently, developers can efficiently build and manage advanced AI solutions while facing minimal technical obstacles, making it an appealing choice for both beginners and experienced programmers.

LanceDB is a user-friendly, open-source database tailored specifically for artificial intelligence development. It boasts features like hyperscalable vector search and advanced retrieval capabilities designed for Retrieval-Augmented Generation (RAG), as well as the ability to handle streaming training data and perform interactive analyses on large AI datasets, positioning it as a robust foundation for AI applications. The installation process is remarkably quick, allowing for seamless integration with existing data and AI workflows. Functioning as an embedded database—similar to SQLite or DuckDB—LanceDB facilitates native object storage integration, enabling deployment in diverse environments and efficient scaling down when not in use. Whether used for rapid prototyping or extensive production needs, LanceDB delivers outstanding speed for search, analytics, and training with multimodal AI data. Moreover, several leading AI companies have efficiently indexed a vast array of vectors and large quantities of text, images, and videos at a cost significantly lower than that of other vector databases. In addition to basic embedding capabilities, LanceDB offers advanced features for filtering, selection, and streaming training data directly from object storage, maximizing GPU performance for superior results. This adaptability not only enhances its utility but also positions LanceDB as a formidable asset in the fast-changing domain of artificial intelligence, catering to the needs of various developers and researchers alike.

Semantic Kernel serves as a versatile open-source toolkit that streamlines the development of AI agents and allows for the incorporation of advanced AI models into applications developed in C#, Python, or Java. This middleware not only speeds up the deployment of comprehensive enterprise solutions but also attracts major corporations, including Microsoft and various Fortune 500 companies, thanks to its flexibility, modular design, and enhanced observability features. Developers benefit from built-in security measures like telemetry support, hooks, and filters, enabling them to deliver responsible AI solutions at scale confidently. The toolkit's compatibility with versions 1.0 and above across C#, Python, and Java underscores its reliability and commitment to avoiding breaking changes. Furthermore, existing chat-based APIs can be easily upgraded to support additional modalities, such as voice and video, enhancing its overall adaptability. Semantic Kernel is designed with a forward-looking approach, ensuring it can seamlessly integrate with new AI models as technology progresses, thus preserving its significance in the fast-evolving realm of artificial intelligence. This innovative framework empowers developers to explore new ideas and create without the concern of their tools becoming outdated, fostering an environment of continuous growth and advancement.

The Model Context Protocol (MCP) serves as a versatile and open-source framework designed to enhance the interaction between artificial intelligence models and various external data sources. By facilitating the creation of intricate workflows, it allows developers to connect large language models (LLMs) with databases, files, and web services, thereby providing a standardized methodology for AI application development. With its client-server architecture, MCP guarantees smooth integration, and its continually expanding array of integrations simplifies the process of linking to different LLM providers. This protocol is particularly advantageous for developers aiming to construct scalable AI agents while prioritizing robust data security measures. Additionally, MCP's flexibility caters to a wide range of use cases across different industries, making it a valuable tool in the evolving landscape of AI technologies.

The AI Knowledge Platform offers a streamlined approach to developing high-performance vector search applications through its Pinecone Database, Inference, and Assistant. This fully managed and user-friendly database provides effortless scalability while eliminating infrastructure challenges. After creating vector embeddings, users can efficiently search and manage them within Pinecone, enabling semantic searches, recommendation systems, and other applications that depend on precise information retrieval. Even when dealing with billions of items, the platform ensures ultra-low query latency, delivering an exceptional user experience. Users can easily add, modify, or remove data with live index updates, ensuring immediate availability of their data. For enhanced relevance and speed, users can integrate vector search with metadata filters. Moreover, the API simplifies the process of launching, utilizing, and scaling vector search services while ensuring smooth and secure operation. This makes it an ideal choice for developers seeking to harness the power of advanced search capabilities.

Presenting a leading conversational AI solution tailored for enterprise automation, Botpress features a robust and entirely on-premise platform that allows organizations to optimize their conversations and workflows with ease. Our superior natural language understanding (NLU) capabilities far exceed those of our rivals, leading to markedly improved customer satisfaction levels. Created in partnership with prominent enterprises, Botpress is designed to meet the challenges across a range of industries, including finance and national defense. Having undergone extensive testing by numerous developers, it is recognized as a dependable, secure, and highly scalable choice. With Botpress, there's no necessity to hire specialists with PhDs for your conversational projects; we guarantee that the latest advancements in natural language processing (NLP), NLU, and NDU are incorporated into a highly accessible product. The outcome is a solution that consistently performs exceptionally well without complications. This makes it the perfect option for businesses eager to enhance their conversational abilities seamlessly and effectively. Embrace Botpress today and unlock the true potential of your organization's communication strategies.

Qdrant operates as an advanced vector similarity engine and database, providing an API service that allows users to locate the nearest high-dimensional vectors efficiently. By leveraging Qdrant, individuals can convert embeddings or neural network encoders into robust applications aimed at matching, searching, recommending, and much more. It also includes an OpenAPI v3 specification, which streamlines the creation of client libraries across nearly all programming languages, and it features pre-built clients for Python and other languages, equipped with additional functionalities. A key highlight of Qdrant is its unique custom version of the HNSW algorithm for Approximate Nearest Neighbor Search, which ensures rapid search capabilities while permitting the use of search filters without compromising result quality. Additionally, Qdrant enables the attachment of extra payload data to vectors, allowing not just storage but also filtration of search results based on the contained payload values. This functionality significantly boosts the flexibility of search operations, proving essential for developers and data scientists. Its capacity to handle complex data queries further cements Qdrant's status as a powerful resource in the realm of data management.

LlamaIndex functions as a dynamic "data framework" aimed at facilitating the creation of applications that utilize large language models (LLMs). This platform allows for the seamless integration of semi-structured data from a variety of APIs such as Slack, Salesforce, and Notion. Its user-friendly yet flexible design empowers developers to connect personalized data sources to LLMs, thereby augmenting application functionality with vital data resources. By bridging the gap between diverse data formats—including APIs, PDFs, documents, and SQL databases—you can leverage these resources effectively within your LLM applications. Moreover, it allows for the storage and indexing of data for multiple applications, ensuring smooth integration with downstream vector storage and database solutions. LlamaIndex features a query interface that permits users to submit any data-related prompts, generating responses enriched with valuable insights. Additionally, it supports the connection of unstructured data sources like documents, raw text files, PDFs, videos, and images, and simplifies the inclusion of structured data from sources such as Excel or SQL. The framework further enhances data organization through indices and graphs, making it more user-friendly for LLM interactions. As a result, LlamaIndex significantly improves the user experience and broadens the range of possible applications, transforming how developers interact with data in the context of LLMs. This innovative framework fundamentally changes the landscape of data management for AI-driven applications.

Harness the latest advancements in natural language processing by implementing Haystack's pipeline framework with your own datasets. This allows for the development of powerful solutions tailored for a wide range of NLP applications, including semantic search, question answering, summarization, and document ranking. You can evaluate different components and fine-tune models to achieve peak performance. Engage with your data using natural language, obtaining comprehensive answers from your documents through sophisticated question-answering models embedded in Haystack pipelines. Perform semantic searches that focus on the underlying meaning rather than just keyword matching, making information retrieval more intuitive. Investigate and assess the most recent pre-trained transformer models, such as OpenAI's GPT-3, BERT, RoBERTa, and DPR, among others. Additionally, create semantic search and question-answering systems that can effortlessly scale to handle millions of documents. The framework includes vital elements essential for the overall product development lifecycle, encompassing file conversion tools, indexing features, model training assets, annotation utilities, domain adaptation capabilities, and a REST API for smooth integration. With this all-encompassing strategy, you can effectively address various user requirements while significantly improving the efficiency of your NLP applications, ultimately fostering innovation in the field.

In software development, unforeseen results frequently arise, and having complete visibility into the entire call sequence allows developers to accurately identify the sources of errors and anomalies in real-time. By leveraging unit testing, software engineering plays a crucial role in delivering efficient solutions that are ready for production. Tailored specifically for large language model (LLM) applications, LangSmith provides similar functionalities, allowing users to swiftly create test datasets, run their applications, and assess the outcomes without leaving the platform. This tool is designed to deliver vital observability for critical applications with minimal coding requirements. LangSmith aims to empower developers by simplifying the complexities associated with LLMs, and our mission extends beyond merely providing tools; we strive to foster dependable best practices for developers. As you build and deploy LLM applications, you can rely on comprehensive usage statistics that encompass feedback collection, trace filtering, performance measurement, dataset curation, chain efficiency comparisons, AI-assisted evaluations, and adherence to industry-leading practices, all aimed at refining your development workflow. This all-encompassing strategy ensures that developers are fully prepared to tackle the challenges presented by LLM integrations while continuously improving their processes. With LangSmith, you can enhance your development experience and achieve greater success in your projects.