Claude Code — Development Economics

Every project built in Claude Code over the window, with token utilization, hands-on time, and theoretical API-list cost. Parsed from session transcripts, deduped by message id (resume/fork copies removed).

Billed $0 · Max plan
Where the spend went

Theoretical API cost by project

Anthropic list price (Opus 4.8 $5/$25 per MTok; cache read 0.1×, write 1.25×).

Cost per day

Session cost attributed to its start day.

Token mix by model

Project ledger — sorted by cost
Method & caveats