Start free on Starter

Magic link to your work email. No password. See OpenAI cost per customer this month. No credit card needed for Starter.

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Three steps. Then you see cost by customer.

  1. 01

    Copy your CostSlice key

    After you sign in, the key is on Get Started. Permanent home: Settings → Keys. Put COSTSLICE_KEY in your product’s environment variables, never in chat.

  2. 02

    Point the product at CostSlice

    In the code that already calls OpenAI, set the address to https://api.costslice.com/v1 and send x-cs-key. Completions still go to OpenAI with your OpenAI API key.

  3. 03

    Put the opaque customer ID on every request

    Opaque customer ID, feature, and whether it’s production. Never a name or email. A missing ID still completes and lands in untagged. Starter at 10,000 requests: new proxy calls stop until you upgrade.

We never store what people type. A missing tenant ID still completes and lands in untagged. Starter at 10,000 requests: New proxy calls stop until you upgrade. That is the Starter plan cap, not a per-customer block.

Start free — CostSlice