LLM agent development tools - AI tools

LM-Kit provides .NET developers with tools for AI agent customization, creation, and orchestration. It enables multimodal generative AI systems integration in C# and VB.NET applications.

• Paid
• From 1000$

LangChain is a comprehensive framework for developing and deploying applications powered by large language models (LLMs), enabling the creation of sophisticated AI agents, chatbots, and data analysis tools. It facilitates building context-aware and reasoning applications.

• Free

Agenta is an LLM engineering platform offering tools for prompt engineering, versioning, evaluation, and observability in a single, collaborative environment.

• Freemium
• From 49$

AgentOps is a comprehensive developer platform that enables testing, debugging, and deployment of AI agents with support for 400+ LLMs, Crews, and AI agent frameworks.

• Freemium
• From 40$

Relari offers a contract-based development toolkit to define, inspect, and verify AI agent behavior using natural language, ensuring robustness and reliability.

• Freemium
• From 1000$

Nelly is an AI agent platform allowing users to build, use, and share AI agents for tasks ranging from simple to complex workflows without coding.

• Freemium
• From 9$

ChatDev simulates a virtual software company using AI agents based on LLMs to automate tasks like designing, coding, testing, and documenting software projects.

• Free

Flowise is an open-source low-code platform that enables developers to build customized LLM orchestration flows and AI agents through a drag-and-drop interface.

• Freemium
• From 35$

SmolAgents is a minimalist AI agent framework by Hugging Face that enables developers to create and deploy robust AI agents with just a few lines of code, focusing on code-first execution and seamless integration with various LLM models.

• Freemium
• From 12$

Laminar is an open-source platform that enables developers to trace, evaluate, label, and analyze Large Language Model (LLM) applications with minimal code integration.

• Freemium
• From 25$

Literal AI streamlines the development of LLM applications, offering tools for evaluation, prompt management, logging, monitoring, and more to build production-grade AI products.

• Freemium

Portia Labs provides an open-source SDK and cloud platform for developers to build, manage, and deploy AI agents with explicit planning, execution control, and user authentication.

• Freemium
• From 30$

Letta is an open-source platform for creating, deploying, and managing stateful AI agents with infinite context and human-like memory. It offers advanced reasoning capabilities and transparent long-term memory powered by MemGPT.

• Contact for Pricing

Vestra AI is a platform enabling users to build, deploy, and manage custom AI agents using natural language, without coding. Explore pre-built agents or create unique ones for task automation.

• Usage Based

Monoid is an open-source platform that transforms APIs into AI Agents, enabling LLMs to gain context and perform real-time actions through a seamless and customizable interface.

• Free Trial

Hegel AI provides a developer platform for building, monitoring, and improving large language model (LLM) applications, featuring tools for experimentation, evaluation, and feedback integration.

• Contact for Pricing

Agno is an open-source platform for building, deploying, and monitoring AI agents. It allows developers to create high-performance agents with memory, knowledge, and tool integration capabilities.

• Free

Mastra is a TypeScript agent framework designed for developers to prototype and productionize AI features and intelligent agents using a modern JavaScript stack.

• Contact for Pricing

gptme is a terminal-based AI assistant that can execute code, manipulate files, browse the web, and use vision, serving as a powerful tool for developers and knowledge workers.

• Free

Cloudflare Agents provides a robust platform for developers to build agentic AI applications, utilizing Cloudflare's infrastructure for durable execution and serverless inference.

• Usage Based

LlamaHub is a repository providing data loaders, agent tools, and LlamaPacks to quickly build and customize Retrieval-Augmented Generation (RAG) applications using frameworks like LlamaIndex and LangChain.

• Free

Rivet is an open-source visual programming environment enabling developers to collaboratively build, debug, and deploy complex AI agents powered by Large Language Models (LLMs).

• Free

SwarmZero is a platform for building, deploying, and monetizing AI agents. It offers a marketplace (Agent Hub) where users can access and utilize developer-created agents.

• Paid
• From 15$

LaVague is an open-source framework enabling developers to build and deploy customizable AI Web Agents for tasks like web automation, QA testing, and information retrieval.

• Free

BuildOwn.AI offers a comprehensive guide for developers to build AI applications using large language models. This resource provides structured learning, practical insights, and is adaptable to any programming language.

• Other

LM Studio is a desktop application that allows users to run Large Language Models (LLMs) locally and offline, supporting various architectures including Llama, Mistral, Phi, Gemma, DeepSeek, and Qwen 2.5.

• Free

AgentLabs simplifies building and sharing chat-based applications using backend code, supporting rapid deployment and real-time interactions.

• Usage Based

LLMStack is an open-source development platform that enables users to build AI agents, workflows, and applications by integrating various model providers and custom data sources.

• Other

Rubra provides a collection of open-weight large language models (LLMs) enhanced with tool-calling capabilities, ideal for building AI agents.

• Free

Candle is an SDK that provides programmatic read and write access to consumer internet services, enabling seamless integration with LLMs.

• Freemium
• From 84$