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A8 (Touchstone) available for previewDocumentation calls, abstention, reproducibility
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Pricing

What A8 costs per million input tokens, what counts as a token in a verdict, and how billing works.

This page as Markdown: https://u22a8.ai/docs/pricing.md. The index of every docs page: https://u22a8.ai/llms.txt.

A8 is metered per token. Each request is billed for the input tokens it reads, as the usage on its response reports them.

§1Prices

ModelInput ($ / 1M tokens)Output ($ / 1M tokens)
a8-1, your organization’s modelTBD (price)n/a: the output count is always 0
a8-1-1@reference, the reference modelTBD (price)n/a: the output count is always 0
Table 1. Prices per model; a pinned version is billed at the price of its model.
  • Input ($ / 1M tokens): the price of one million input tokens, summed over an organization’s requests in a billing period.
  • Output ($ / 1M tokens): A8 scores the verdict, so every response reports 0 output tokens.
FeaturePrice
TeachTBD (price per teach)
RetractTBD (price per retract)
Fitting a new versionTBD (price per fit)
Precedents and recallTBD (price per 1M tokens)
Table 2. Prices of the features beside judging.

§2What counts as a token

  • What A8 reads. A verdict counts the texts A8 judges with: the criterion, the subject and its standards, and each property’s own criterion. A recall counts the criterion it asks about. A request answered with a no_question abstention counts the text of each of its messages.
  • The count on the response. usage.prompt_tokens on Chat Completions and usage.input_tokens on Responses and Anthropic Messages report the count billed.
  • A8’s own tokenizer. A8 counts tokens its own way, so the count for a given text differs from another provider’s count for the same text.
  • More than one choice. With n above 1 on Chat Completions, each choice is computed on its own, and the input counts once per choice.
  • An abstention. An abstention reads the same input as an answer. Its billing is TBD (abstention billing).

§3A worked example

A regression suite judges 10,000 replies against one criterion, with a verdict shape. Each reply runs about 300 tokens and the criterion with its shape about 100, so each request reads about 400 input tokens:

ItemAmount
Requests10,000
Input tokens per requestAbout 400
Input tokens in allAbout 4,000,000
Cost at the a8-1 priceTBD (4 × the price per 1M tokens)
Table 3. A worked example with illustrative token counts; your responses report the real ones.

§4Billing

Usage is metered per organization and invoiced TBD (billing period and payment methods). The terms that govern billing are in the Terms of service.

Next steps

Rate limitsHow A8 limits requests and tokens per organization, the headers that report the limits, and how to raise them.API overviewWhat every request to A8 shares, from the base URL and authentication to the request parts and the response fields.TeachingHow to teach and retract through MCP, when a teach lands in your organization’s model and what it changes.