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Mastra
OrganizationMastra (Gatsby founders)
Founded2024
FundingYC-adjacent
Codeopen source
Agent framework; observational memory ingests with a small model, recalls at chat time.
Every number on file
| claimed | benchmark | config | runner | status |
|---|---|---|---|---|
| 94.87 | LongMemEval-S | gpt-5-mini reader · gpt-4o judge (LME prompts) | self (research post) | SELF-REPORTED |
Declined to publish LoCoMo, citing unreliable scoring — unusually well-disclosed config.
Rows are not comparable — configs differ. A row graduates to a verdict only through a registered re-run. The protocol →