Compare software

gptme vs Letta: catalog facts
gptme	Letta
Free Free and open source; model API costs depend on the provider you use.	Freemium The agent installs from npm; the homepage does not detail pricing.
Command line	Command line
Runs shell commands and edits files directly Can browse the web as part of a task	Persistent memory that carries over between sessions Installs with a single npm command
Giving an agent shell access needs care Requires setting up a model provider	Homepage gives few details on pricing or licensing Aimed at developers comfortable with the command line
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.