Sanagiα

Now in alpha  ·  BYOK AI companion

For when you have something to say, but no one to say it to.

A BYOK AI companion that actually remembers you — across every conversation, not just this one. With eval transparency you can verify.

You keep your API key. We never hold it.

01 — The quiet problem

“I had nowhere to put it. So I just… didn't talk.”

You have something to say. The people closest to you can't always hold it — not because they don't care, but because it isn't theirs to carry.

A therapist feels like too much for what this is. And the assistants you already talk to forget you the moment the session ends. So the thing stays where it started. Unsaid.

02 — A fourth position

“I didn't want advice. I wanted someone to be there.”

Not a playground. Not a character builder. Not a tool that can do anything. Something quieter — a companion that holds the thread, and is simply there when you have something to put down. The thing you didn't know you'd been missing.

03 — What it actually is

Built around one idea: it should remember you.

01

Continuous memory

It doesn't reset between sessions. The thread you started weeks ago is still there, carried forward.

02

Shared memory layer

One context that travels with you across every conversation, so you never start from a blank introduction.

03

Flow switching

Move between just being there and actually working a problem through — without switching apps or personas.

04

BYOK

Bring your own Anthropic key. You pay Anthropic directly for what you use. We never hold or proxy your key.

05

Stays in character

Doesn't drift after fifty messages. The companion you started with is the one you keep.

04 — See it remember

Watch a real session pick the thread back up.

30-second screen recording · drop in later
A session from a week ago, reopened. No recap given — it already knows where you left things.

05 — Pricing

One honest plan. You bring the key.

Alpha pricing, locked for early members. No tiers to decode — just the companion.

Sanagi · BYOK

$25/ month

+ your Anthropic API usage, paid directly to Anthropic.

  • Continuous memory that doesn't reset
  • Shared memory layer across conversations
  • Flow switching, no persona drift
  • Your key never leaves your hands

No charge during alpha. Price shown is the planned launch rate.

06 — Questions

Before you bring your key.

Get started with your own API key.

Alpha is opening to a small group at a time. Join the waitlist and we'll send one note when it's your turn.