Which is more popular, DeerFlow or Mastra?

DeerFlow has more GitHub stars (83,349 vs 28,525).

Which is more actively developed, DeerFlow or Mastra?

Mastra had more commits in the last 90 days (4,109 vs 1,274).

Compare their capabilities, limitations and "best for" notes above. Trying each on a small task is the fastest way to decide.

Side-by-side comparison of two AI agent tools

DeerFlow is growing faster: +5,271 GitHub stars in the last 30 days vs +968 for Mastra.
Pick DeerFlow for: open-source agent harness for long-horizon research, coding, and content creation. Pick Mastra for: from the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents.

From GitHub data refreshed daily.

DeerFlowopen-source

Open-source agent harness for long-horizon research, coding, and content creation

From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.

+Comprehensive agent orchestration system that coordinates sub-agents, memory, and sandboxes for complex multi-step tasks
+Extensible skills framework allows customization and expansion of agent capabilities beyond basic functionality
+Active development with a complete 2.0 rewrite showing commitment to architectural improvements and long-term maintenance

-Version 2.0 is a complete rewrite with no backward compatibility, requiring migration effort for existing users
-Complex architecture with multiple components may require significant setup and configuration effort
-Limited documentation visible in the provided materials, potentially creating a steep learning curve

•Automated research workflows that require gathering information from multiple sources and synthesizing findings
•Software development projects requiring coordination between planning, coding, testing, and deployment phases
•Content creation tasks that involve research, writing, editing, and publication across multiple platforms

Which is more popular, DeerFlow or Mastra?: DeerFlow has more GitHub stars (83,349 vs 28,525).
Which is more actively developed, DeerFlow or Mastra?: Mastra had more commits in the last 90 days (4,109 vs 1,274).
Should I use DeerFlow or Mastra?: Compare their capabilities, limitations and "best for" notes above. Trying each on a small task is the fastest way to decide.