WOZCODE Cuts Claude Code Costs by 63% on Opus 4.7

The article benchmarks Claude Code with and without the WOZCODE plugin across Opus 4.6 and Opus 4.7. On Opus 4.6, vanilla Claude Code costs $11.62 per run, while WOZCODE reduces it to $6.88—a 41% savings. On Opus 4.7, vanilla cost jumps to $20.92 (an 80% increase over 4.6), but with WOZCODE it drops to $7.73, a 63% reduction versus vanilla 4.7. The dollar gap between vanilla and WOZCODE grows from $4.74 to $13.19 per run. Wall‑clock time follows the same trend: vanilla 4.6 takes 28 min 31 s, vanilla 4.7 35 min 2 s, while WOZCODE 4.7 finishes in 26 min 21 s. Turn counts drop from 161 to 52 on 4.7. The plugin replaces several built‑in tools with more efficient operations—combined search and read, batched editor, AST‑aware truncation, and live SQL tool—leveraging Opus 4.7’s improved planning. Anthropic’s tokenizer and higher default effort explain the 80% cost increase for vanilla. The article notes that upgrading to 4.7 with WOZCODE gives a 12% cost increase over 4.6 but still far cheaper than vanilla, and that the plugin’s advantage compounds with future model releases.

Installation is two terminal commands: `claude plugin marketplace add WithWoz/wozcode-plugin` and `claude plugin install woz@wozcode-marketplace`. Opus 4.7 is the best model shipped, and WOZCODE’s tooling remains unchanged across model versions.

The benchmark was run on April 28 2026 using a standard TypeScript codebase and leave‑defaults settings.