> which is exactly why we believe memory should live outside of model providers open harness = open memory which everyone should want!

which is exactly why we believe memory should live outside of model providers open harness = open memory which everyone should want! The new Anthropic managed agents API is basically the Letta API that we've had since a year ago, but closed source and with provider lock-in. They even have read-only memory blocks and memory block sharing -- something which was unique to the Letta agents for a long time. Funny e…

big supporter of memories not being locked up in provider silos. we've been through this spiel in all the past hype cycles.
Open Harness, separated from model providers is a critical architectural pattern.
The memory ownership point is the real story here. Running a persistent agent 24/7, memory isn't a feature — it's the entire value layer. Lo…
'Harnesses are intimately tied to memory, which means that by choosing an open harness you are choosing to own your memory, and not have it …
memory ownership is why we need open harnesses blog about this coming this weekend
tldr: everyone is converging on the same product shape: a general harness that takes a goal, uses tools, and does knowledge work. once every…

Source: Harrison Chase (X) | 2026-04-08

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