What is your AI doing?

Drop in last month’s usage export from OpenAI or Anthropic, and in about two minutes you will see what you spent and where it could have cost less. It is free, and an export needs no account.

Run the free check

We read. We never change anything, and we never see your prompts.

Sample check, Amethyst

Demo company

Reading 30 days at OpenAI and Anthropic, and 4 keys.

You spent £1,646.91 on AI between 11 September and 10 October.

Up to £212 of that could have gone to cheaper models doing the same kind of work, and caching repeated prompts could have saved up to £897. Those are estimates.

Three of the 4 keys have nobody watching them. One of them:

“transcripts-batch”: no named owner, last used 8 October, £175.11 in the last 30 days.

What a check cannot see: prompts and answers, keys it was not given, tools billed by seat, and anything before the 30 days.

Two ways in.

Or use a read-only admin key

A key adds what an export leaves out: every key, who owns it, when it was last used and what it spent. We use it once for this check and do not keep it.

A key can read your whole organisation’s usage, so we only take one from someone signed in. A free account takes a minute and needs no card.

Create a free account Sign in

What it reads, and what it cannot see.

A check that hides its limits is not worth running.

It reads: Your provider bills and usage for the last 30 days, by model, key and project. Given an admin key, it also reads who made each key and when it was last used.
It cannot see: Prompts and answers, which is why the savings are estimates; agents using keys it was not given; anything older than 30 days.
What we keep: The report, for 7 days, at a link only you are given. The export itself is read in memory and never stored, and anything in it shaped like a key is cut to its first characters and last four. Whoever you share the link with sees the report, never your keys.

Or run it where your agents live.

In a project folder, the check lists your agents, MCP servers and keys, and what each is allowed to do. Nothing leaves the machine unless you ask it to.

$ npx immiscible check

Two minutes. One page that is true.

Or in Teams, or by email. It takes about two minutes to start, it’s free for three agents, and we never take a share of spend.

Start free