Blog — Nov 2025 till Oct 2025
Updates, tutorials, and engineering deep-dives on building AI agents, workflows, and TypeScript tooling with Mastra.
Mastra Changelog 2025-11-01
Agent Studio, 1.0 Release Preparation, and more.
Introducing Mastra’s Agent Studio
We've renamed Playground to Studio and it's now shareable with your team.
HITL: Ask Before Acting
Learn how to use HITL (Human-in-the-Loop) to safely build tools that require human approval.
Mastra Changelog 2025-10-23
Workflow state management, unified streaming, AI tracing updates, and more..
You can suspend/resume workflows in playground
Mastra workflows now support suspend and resume in Playground. You can also use the new resumeStream API to close streams on suspend and resume them later.
Workflow State: Share Data Across Steps
Workflow state lets you share values across steps without threading them through every `inputSchema` and `outputSchema`.
The evolution of AgentNetwork
We've unified multi-agent coordination under a new .network() primitive—read about our journey, the experiments, and how you can use it to orchestrate collaborative agents simply.
Introducing Mastra Model Router: 600+ models, one API, zero package installs
Access 600+ LLM models from 40+ providers with a single string. Full TypeScript autocomplete turns your IDE into a model search engine.
Announcing our $13m seed round from YC, pg, Gradient, Amjad, Guillermo, Balaji, and 120+ others
Mastra secures $13m from a coalition of legendary investors to fuel AI agent development and production.
Migration Guide: VNext to Standard APIs
Learn how to migrate from Mastra’s VNext streaming methods to the new standard APIs, with details on renaming, compatibility, and key differences between AI SDK v4 and v5.
Mastra Changelog 2025-10-03
New model router and automatic model fallbacks.
Model fallbacks: Your safety net for production AI
Model fallbacks ensure your application stays online by automatically switching to backup models when your primary provider fails.