Reference Omeka Classic plugin

Costs and Budgets

Every job records what it actually cost, with a breakdown by stage, at the rates set in the settings. The settings page shows the month's spend against the budget.

Estimates and actual costs

  • Before queueing, the file's page and the batch screen's confirmation show an estimate: the recording's duration (from ffprobe, or from the bit rate Omeka read when the file was added) at the transcription rate, plus an estimate of the tokens of the language-model passes.
  • After each paid stage, the actual cost is recorded from the provider's answer: the audio duration it reports, and the tokens it used.
Rate Default Applies to
Transcription rate (USD a minute) 0.006 Minutes of audio sent for transcription. OpenAI whisper-1.
Model input rate (USD per million tokens) 0.15 Prompt tokens of the cleanup, segmentation and summary passes.
Model output rate (USD per million tokens) 0.60 Completion tokens of the same passes.

Change the rates when your provider's prices change; they apply to estimates and to later actual costs, not to past records. Costs are kept in whole cents: a short clip can cost $0.00.

Caps

Cap Behavior
Monthly budget (USD) Queueing is refused when the month's spend (UTC) plus the estimate would go over it, and a running job stops before its next paid stage once the spend is over it, failing with budget_exceeded. Retry it when there is room again (next month, or with a higher budget). 0 means no budget.
Daily automatic queue cap At most this many files are queued automatically a day (UTC). Files passed over are listed on the review queue page; staff queueing is not limited.

Keeping costs down

  • A retry resumes at the stage that failed, so a passing provider error never bills completed stages again.
  • Re-run segmentation and Generate summary each run one pass.
  • Leave Summary element empty if you do not want summaries: the pass is skipped.
  • The mock provider costs nothing, and is good for training staff on the review workflow.
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