What are the best tools for developing AI agents?
Asked "What are the best tools for developing AI agents?", Google AI Mode, Copilot, Gemini, ChatGPT and Perplexity named 41 distinct tools across 15 answers on September 7, 2026, and 21 of them in two or more answers.
Measured acrossGoogle AI ModeCopilotGeminiChatGPTPerplexity
21 of 41 names confirmed · named in 2 or more of 15 answers · asked September 7, 2026 · 5 engines
The best tools for developing AI agents are LangGraph, Microsoft Agent Framework, Claude Agent SDK, OpenAI Agents SDK, Google ADK, CrewAI, and LlamaIndex, each excelling in different use cases such as enterprise integration, multi-agent orchestration, or knowledge-grounded workflows.
- 1LangGraphnamed in 12 of 15 answers
- 2CrewAInamed in 12 of 15 answers
- 3OpenAI Agents SDKnamed in 10 of 15 answers
- 4AutoGennamed in 6 of 15 answers
- 5LlamaIndexnamed in 6 of 15 answers
- 6n8nnamed in 6 of 15 answers
- 7Microsoft Agent Frameworknamed in 5 of 15 answers
- 8Pydantic AInamed in 5 of 15 answers
- 9LangChainnamed in 3 of 15 answers
- 10Claude Agent SDKnamed in 3 of 15 answers
- 11Difynamed in 3 of 15 answers
- 12Gumloopnamed in 3 of 15 answers
- 13Mastranamed in 3 of 15 answers
- 14Salesforce Agentforcenamed in 3 of 15 answers
- 15Google ADKnamed in 2 of 15 answers
- 16Google Agent Development Kitnamed in 2 of 15 answers
- 17Botpressnamed in 2 of 15 answers
- 18Microsoft Copilot Studionamed in 2 of 15 answers
- 19PydanticAInamed in 2 of 15 answers
- 20Zapiernamed in 2 of 15 answers
- 21Airtablenamed in 2 of 15 answers
- 22Microsoft Semantic Kernelnamed in 1 of 15 answersone answer
- 23Microsoft AutoGennamed in 1 of 15 answersone answer
- 24Semantic Kernelnamed in 1 of 15 answersone answer
- 25Flowisenamed in 1 of 15 answersone answer
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The full measurement
- The position each of the 5 engines gave all 41 names.
- How many of the 15 answers named each of them.
- 140 sampled observations behind this ranking, and where the engines disagree.
- Fan-out — the query each engine actually searched.
- Every citation, and the sources nobody cited.