LangChain, Inc. · Agent frameworks & orchestration
In-depth entry
Low-level orchestration framework and runtime for stateful, long-running agents expressed as graphs, with durable execution, checkpointing, human-in-the-loop and streaming
Tavily (Alpha AI Technologies Inc.) · Search & web-data APIs
In-depth entry
Web search, extraction, crawling and research API designed for LLM agents, returning concise source content with SDKs, framework integrations and a hosted MCP server
ProprietaryFreemiumUsage-basedNov 2, 2026
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