AI agent builders, as AI assistants see them

Out of 34 AI agent builders tracked, LangChain sits on top with an overall score of 44, named in 44 of 71 answers. That's a clear lead over CrewAI in second place, which scores 22 and appears in 25 of 71 answers. OpenAI AgentKit and n8n trail close behind, tied on 23 of 71 mentions but with overall scores of 21 and 18 respectively. Pydantic AI rounds out the top five with a score of 15. Worth noting: OpenAI AgentKit scores 0 with Gemini, and Pydantic AI does too, showing some real gaps in how consistently these tools get recognized across assistants.

week of 2026-09-14

Leaderboard

#	product	score	vs last week
1	LangChain	44	new
2	CrewAI	22	new
3	OpenAI AgentKit	21	new
4	n8n	18	new
5	Pydantic AI	15	new
6	Zapier Agents	13	new
7	Dify	11	new
8	Make	11	new
9	Lindy	10	new
10	Microsoft Copilot Studio	10	new
11	Voiceflow	10	new
12	Amazon Bedrock AgentCore	9	new
13	Microsoft Agent Framework	9	new
14	Relevance AI	9	new
15	Vertex AI Agent Builder	9	new
16	Mastra	8	new
17	Microsoft AutoGen	8	new
18	Flowise	7	new
19	LlamaIndex	7	new
20	Claude Agent SDK	6	new
21	Gumloop	5	new
22	Langflow	5	new
23	Vapi	5	new
24	Vercel AI SDK	5	new
25	Bland	4	new
26	Retell AI	4	new
27	Semantic Kernel	4	new
28	Letta	3	new
29	Taskade Genesis	3	new
30	xpander.ai	3	new
31	Botpress	2	new
32	Coze	2	new
33	Rasa	2	new
34	Synthflow	2	new

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Score = how often an assistant names the product, weighted by position. Full explanation.