Measuring Real Cost per Agent Task on Muse Ember With a JavaScript Harness

Per-token pricing hides the number that matters: cost per completed agent task. This short walks through a JavaScript harness that models Muse Ember's real cost with a task contract, a per-turn JSONL trace, a context-growth model, and a verifier-gated router. It uses only numbers stated in the post: a 40-task synthetic run with a $0.0034 median and $0.0059 mean, and a 64× gap between a 9-turn task at $0.0038 and a 25-turn context-resend run at $0.245. The harness was run against a scripted provider; Muse Ember details come from public coverage cited in the full post. Read it here: https://hackyjs.com/posts/measuring-real-cost-per-agent-task-on-muse-ember-with-a-javascript-harness

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