Letta
lettaSite: letta.com · OpenRouter listing ↗
Sightings observed Letta with 3 models in OpenRouter-published model-page evidence. The app was first observed by Sightings on ; first-observed dates record when Sightings first saw each pairing, not when usage began.
- Global rank
- #54
- public app rankings
- Tokens · yday
- 8.3B
- closed UTC day
- Models observed
- 3
- model pages expose top 5
- First observed
- 2025-08-28
- by Sightings
What it is
See which AI models Letta uses on OpenRouter, ranked by token usage. Platform for stateful agents: AI with advanced memory that can learn and self-improve over time.
↗ letta.comModels observed with this app
Early adopter — relationship first observed within 30 days of the model's OpenRouter listing. First-observed dates are when Sightings first saw the pairing, not the start of an app's model usage. Last observed is the latest recorded model-page evidence for each pairing. An observation does not establish continued or exclusive usage, or reveal the app’s full private infrastructure.
| Model | Tokens · latest | First observed | Last observed |
|---|---|---|---|
| moonshotai/kimi-k3moonshotai/kimi-k3 | 74.1B | ||
| meta/muse-wondermeta/muse-wonder | 5.12B | ||
| perceptron/perceptron-mk1.5perceptron/perceptron-mk1.5 | 25 |