Mastra

Mastra is the Typescript framework for building AI agents and assistants.

Latest funding

$22M Series A · April 9, 2026

Total raised: $35.5M* across 3 sourced rounds

Website: mastra.ai.

X: @mastra · 14,910 followers.

GitHub: abhiaiyer91.

Categories: AI agents Developer tools and cloud.

Sectors: B2B, Engineering, Product and Design, Artificial Intelligence, Developer Tools, Open Source.

Stage: Series A.

Based in: San Francisco, United States.

Total raised: $35.5M* in 3 sourced rounds.

Last round: Apr 9, 2026 · 217 days ago.

Team: 30 people on the team page.

On Recent Funding since: Sep 28, 2026.

Signals

X account@mastra · created Nov 26, 2024 (2 years old) · 14,910 followers

Website registeredOct 1, 2024 (2 years old)

About Mastra

It’s used by some of the largest companies in the world to build internal AI automation tooling and customer-facing agents.

TIMELINE · MONEY RAISED

@mastra·Raised $35M in 2 sourced rounds·2 signals before the first raise

Money raised, round by round (amounts linked to their source). Pins are dated signals; hover the icons for dates.

SB
Sam Bhagwat founder / ceo

LinkedIn · source: foundertrace.com
ST
Shane Thomas Founder / Chief Product Officer

LinkedIn · source: foundertrace.com

Sources and API

Every amount links to the page it came from. * Estimated from an accelerator's published standard deal, not a company-specific disclosure. How Recent Funding sources and verifies funding data. The same data as JSON: /api/v1/companies/mastra (get a free API key).