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$

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$

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$

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

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

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

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$

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$

Fetch.ai provides a platform for creating and deploying AI agents and services. It enables developers to build, deploy, and connect AI agents, fostering a scalable AI ecosystem.

• Other

Cognify AI specializes in developing advanced AI-powered conversational agents and Large Language Model (LLM) applications, leveraging expert knowledge in machine learning and deep learning.

• Contact for Pricing

surf.new is a playground environment for testing various web agents powered by Large Language Models (LLMs) that can navigate and interact with websites.

• Free

LMQL is a programming language designed for large language models, offering robust and modular prompting with types, templates, and constraints.

• Free

Lemony is a secure, on-premise generative AI solution offering organization-wide trust, ownership, and transparency. It enables private, intelligent systems tailored for team collaboration and professional use.

• Paid
• From 499$

TheAgentic provides a complete suite of agent infrastructure, including reasoning LLMs, a digital worker framework, and web automation, enabling startups and SaaS companies to build, deploy, and scale AI agents.

• Contact for Pricing

Keywords AI is a comprehensive developer platform for LLM applications, offering monitoring, debugging, and deployment tools. It serves as a Datadog-like solution specifically designed for LLM applications.

• Freemium
• From 7$

Inductor enables developers to rapidly prototype, evaluate, and improve LLM applications, ensuring high-quality app delivery.

• Freemium

Aider is a command-line tool that enables pair programming with LLMs to edit code in your local git repository. It supports various LLMs and offers top-tier performance on software engineering benchmarks.

• Free