Mem0, Supermemory, and Letta run knowledge graphs on cloud compute. ChatSorter runs on your machine or a $5 VPS. Same persistent memory. A fraction of the cost.
Need a custom volume deal or enterprise compliance requirements? Email us.
The expensive tools run knowledge graphs on GPU clusters. ChatSorter uses importance scoring + a small local LLM — simpler architecture, same persistent memory, dramatically lower cost.
| Tool | Architecture | Per-operation cost | Your API token savings | Data location |
|---|---|---|---|---|
| Mem0 | Knowledge graph + cloud LLM | ~$0.002 per memory op | Yes | Their servers |
| Supermemory | Vector DB + cloud compute | Cloud pricing | Partial | Their servers |
| Letta | Knowledge graphs + agents | High compute cost | Yes | Their servers |
| ChatSorter | Local LLM + importance scoring | $0.00 / op (self-hosted) | Up to 93% fewer tokens | Your server |
You download a single executable, add your license key to a config file, and run it. It starts a local API server on your machine. Your chatbot calls localhost instead of our servers. Conversation data never leaves your infrastructure — the only thing that contacts our server is a daily license check (just the key, no data).
Anything that can run Python and Ollama. A $5/month VPS handles low-to-medium traffic fine. A standard developer laptop handles testing and development. The default model (qwen2.5:3b) runs on CPU if you don't have a GPU, though a GPU makes summarization faster.
At message 500, a raw conversation history sent to your LLM is ~25,000 tokens. ChatSorter returns up to 10 compressed summaries and 20 extracted facts — about 1,850 tokens. That's a 93% reduction in input tokens on every request. The longer the session, the bigger the saving. Full calculation on the homepage.
Yes. Purchase a self-hosted license, download the executable, and point your integration at localhost instead of api.chatsorter.com. The API is identical — same two endpoints, same JSON format.
The local server will stop accepting requests on the next restart after expiry. You'll get a clear message with a link to renew. Renewing restores full access immediately.
The free beta hosted version lets you test the full API with no time limit. When you're ready to move data off our servers, upgrade to self-hosted. Email us if you want to discuss a trial period.
Start free. Move to self-hosted when your data needs to stay yours.