Company

Mastra

Rocket Ship Rating

Rocket Ship Rating: 96 out of 100

Build AI agents

Also known as Kepler Software Inc

AI models & AI infrastructure
Developer tools
AI native
Open source

Status: Operatingas of 2026-09-18
Business model: B2B
Employees: 32 peopleSource (opens in a new tab)
Legal name: Kepler Software Inc

Open relationship map

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Record updated 28 September 2026

About

Build, observe, and improve agents that run for days with Mastra, the leading TypeScript agent framework

Funding snapshot

Total raised: $36.2MSEC form D sum, as of 2026-09-28Source (opens in a new tab)
Latest round: Round, $36.2M2026-03-02

Funding rounds

Round, 2026: $36.2M2026-03-02, SEC form D sold, 157 investors

Products

Web: Mastra