Show HN: FrontierHarness Eval – 9 harness, same model, cost per pass varies 17x

Category: ai-ml

Tags: benchmarking, agent-harnesses, llm-evaluation, cost-analysis, trials

Score: 5.0/10 (Innovation: 6, Technical: 4, Documentation: 3, Utility: 5)

FrontierHarness Eval is a benchmarking tool that compares nine different agent harnesses using the same underlying model, revealing that cost per successful pass varies by up to 17x. It provides a structured workflow to install harnesses, freeze checkpoints, run trials, and generate comparative reports.

Target audience: AI researchers, ML engineers, and developers evaluating LLM agent frameworks

Repository: https://frontierharness.org

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