Pricing

Prices

These rates use price card D (October 20, 2026).

Text input is billed per token. See Inputs for formats and availability.

Counting and minimums

Only answered questions have a question fee. Refused questions are not charged. An all-refused request has no text, question or file charge.

Several files each pay their own fee. The same text token is never charged twice.

Text caching

A cached text input token is a text token whose earlier processing System Zero reuses. Text caching is automatic.

An optional prompt_cache_key improves reuse within a workspace. A repeated request is not guaranteed to read from the cache.

Cache lifetime, minimum size and eviction are not published.

Caching saves USD 0.1728 per million cached text tokens compared with the uncached rate.

Add the counts before dividing. Text input is total input_tokens minus media_tokens and cached_media_tokens. Cached text is total cached_input_tokens minus cached_media_tokens.

Divide cached text by text input and multiply by 100. A selection can include media and still show a text rate when every row has all four counts measured.

When the selected period contains no text input, the rate is unavailable. Missing, invalid or inconsistent counts make the rate unavailable.

Read Text caching for usage fields, coverage and the console rate.

Credits and top-ups

One credit costs USD 1. The minimum top-up is USD 5.

As a workspace owner, open Add funds to see the payment options available to your workspace.

Read Billing and credits for account terms, or follow the Quickstart to make a call.