Mastra vs Microsoft Agent Framework

as AI assistants see them, week of 2026-09-14

brag about it: X · LinkedIn

Mastra and Microsoft Agent Framework both sit near the bottom of the pack, with overall scores of 8 and 9 out of 100. Mastra shows up in 12 of 71 answers, edging out Microsoft Agent Framework's 9 of 71. Mastra does best on "which AI agent framework should a developer choose" (2 of 3 answers) and "best platforms for building AI agents" (2 of 4), while Microsoft Agent Framework is named in all 3 answers for "best tool for building multi-agent systems." Head-to-head, Mastra leads on 6 questions, Microsoft Agent Framework on 3, with 11 ties. Neither is ever named for best voice AI agent platform or best fit for non-technical founders.

Head to head

metric	Mastra	Microsoft Agent Framework
score	8	9
questions won	9	5

By assistant

Mastra

assistant	score	named in, this week	usual spot, this week
ChatGPT	5	10% of answers	#6.5
Claude	18	40% of answers	#9.1
Gemini	0	0% of answers
Perplexity	7	11% of answers	#4.5

Microsoft Agent Framework

assistant	score	named in, this week	usual spot, this week
ChatGPT	14	20% of answers	#4.0
Claude	3	5% of answers	#4.0
Gemini	0	0% of answers
Perplexity	15	21% of answers	#4.0

Where they differ

Only Mastra gets named for

What's the best platform for an agency building AI agents for clients?
What's the best AI agent builder in 2026?
What's the best tool to build an AI agent that browses the web and does research?
What's the best platform to build and deploy AI agents for a startup?

Only Microsoft Agent Framework gets named for

nothing exclusive

More comparisons

Not sold on either?

Scores count how often each assistant names a product, weighted by position. How the score works · Full AI agent builders leaderboard