
LangSmith
AI Observability
LangSmith is LangChain's platform for debugging, testing, evaluating, and monitoring LLM applications and agent workflows.
Price$39+ / seat / month
Starting price: below the category median.Orchestration, memory, and eval loops for multi-step agents, past the demo and into the on-call rotation.

AI Observability
LangSmith is LangChain's platform for debugging, testing, evaluating, and monitoring LLM applications and agent workflows.
Price$39+ / seat / month
Starting price: below the category median.Multi-Agent Systems
Library for building stateful multi-actor applications with LLMs, built on top of LangChain for agent workflows.
PriceUsage-based

AI Observability
Langfuse is an open-source platform for tracing, prompt management, evaluations, and observability across LLM applications and agent systems.
Price$29+ / month
Price position: below this category's displayed range.
Prompt Engineering Tools
PromptLayer is a platform for prompt management, AI observability, evaluation workflows, and release control across LLM apps and agent systems.
Price$50+ / seat / month

AI Agents & Sidekicks
Writer is an enterprise AI platform that deploys generative AI agents for content creation, brand compliance, and workflow automation across marketing, sales, and operations teams.
Price$29+ / user / month
Starting price: below the category median.
AI Agents
Multi-modal agent framework for building AI agents with memory and tools.
Price$50 / month
Price position: below the category median.
Chatbot Builder Platforms
Voiceflow is a collaborative platform for designing, building, and deploying AI agents and chatbots across voice and digital channels.
Price$50+ / editor / month

AI Infrastructure
Mem0 provides a memory layer for LLM applications that enables AI assistants and agents to remember and learn from user interactions over time, creating persistent, personalized AI experienc...
Price$19+ / month
Starting price: below the category median.
AI Evaluation and Testing
Braintrust is an AI evaluation platform for testing prompts, models, and application behavior with production-like datasets and scoring workflows.
Price$249 / month
Price position: above the category median.
Observability Platforms
Arize helps teams monitor, evaluate, and improve LLM applications, retrieval systems, and machine learning products once they are live in production.
Price$50+ / month
Starting price: above the category median.
LLM Ops
LLM operations platform for managing prompts, models, and deployments in production with collaboration tools for AI product teams.
Price$5+ / month

Multi-Agent Systems
Enterprise operating system for AI agents enabling orchestration of multiple specialized agents with governance controls.
Price$39+ / seat / month

Prompt Engineering Tools
Vellum helps teams design, test, and orchestrate prompt-driven workflows and LLM-powered products with a more controlled production pipeline.
Price$50+ / month

Autonomous Agents Platforms
Open source memory engine for AI agents and enterprise applications.
Price$50 / month
Price position: at the category median.Autonomous Agents Platforms
Enterprise AI agent platform with open source runtime and actions library.
PriceUsage-based

RAG Platforms
Open-source all-in-one AI application with RAG, agents, and multi-model support for teams.
Price$50+ / month
AI Agents & Sidekicks
Wordware is a platform for building AI agents using natural language that enables non-technical users to create, test, and deploy sophisticated AI workflows without writing code.
Price$49+ / month
Starting price: below the category median.
Multi-Agent Systems
CrewAI is an open-source framework for orchestrating role-playing AI agents that work together to accomplish complex tasks through collaborative multi-agent workflows.