Cost Tracking

yoyo estimates the cost of each interaction so you can monitor spending.

Per-turn costs

After each response, you’ll see token usage and cost:

  tokens: 1523 in / 842 out  (session: 4200 in / 2100 out)  cost: $0.0234  total: $0.0567  ⏱ 3.2s

• cost — estimated cost for this turn
• total — estimated cumulative cost for the session

Detailed breakdown

Use /tokens to see a full breakdown including cache usage:

  Session totals:
    input:       120.5k tokens
    output:      45.2k tokens
    cache read:  30.0k tokens
    cache write: 15.0k tokens
    est. cost:   $0.892

How costs are calculated

Costs are estimated based on published Anthropic pricing:

MTok = million tokens.

Limitations

• Cost estimates are approximate — actual billing may differ slightly
• For unrecognized models, no cost estimate is shown
• Cache read/write costs depend on Anthropic’s caching behavior, which yoyo doesn’t control

Keeping costs down

• Use smaller models (Haiku, Sonnet) for simple tasks
• Use /compact to reduce context size (fewer input tokens per turn)
• Use single-prompt mode (-p) for quick questions to avoid accumulating context
• Turn off extended thinking for routine tasks