Stop Guessing Which Coding Agent to Use — Benchmark It on Your Own Tasks

Fri, 24 Jul 2026 00:00:00 +0000

TL;DR: Generic coding-agent leaderboards don’t tell you which model or tool fits your work at a budget you’re willing to spend. So I built a small task set that mirrors my real work and ran an open-source framework (aws-samples/sample-agent-cost-bench) that measures cost, quality, and latency together. Two findings surprised me: the priciest model (Opus 4.8) missed a task that a mid-priced one (Sonnet 4.6) passed at a third of the cost, and, when comparing the same model across two tools, the per-credit rate you actually pay can flip which tool looks cheaper. All numbers below are from real runs I did on 2026-07-16.

Every few weeks a new coding-agent leaderboard makes the rounds, and every time the question I actually care about goes unanswered: not “which model tops a public benchmark” but “which model, wrapped in which CLI, does my kind of work well enough at a price I’m happy to pay.” Those are two different questions, and neither shows up on a generic leaderboard built from someone else’s tasks.

schristoph.online

Stop Guessing Which Coding Agent to Use — Benchmark It on Your Own Tasks