Output Formats

Terminal (default)

llm-usage daily

Terminal output includes:

• boxed report header + timezone
• source-aware row styling
• diagnostics on stderr
• data table on stdout

JSON

llm-usage daily --json

Use for scripting and automation pipelines.

Markdown

llm-usage daily --markdown

Use for docs, changelogs, and issue/PR reporting.

Per-model columns

Detailed multiline metrics per model:

llm-usage monthly --per-model-columns
llm-usage monthly --markdown --per-model-columns

stdout/stderr behavior

• stdout: report body (terminal, json, or markdown)
• stderr: diagnostics (session summary, parse failures, skipped rows, pricing source)