The Harness, Not the Model, Sets the Bill
TrueFoundry's core pitch is that agent cost is mostly a plumbing problem, not a model-pricing problem. Its benchmark used 14 cross-system enterprise tasks drawn from DevRev's Enterprise-Bench, run across three MCP tool servers (CRM, project tracker, document store), with a fresh session per task and blind LLM-judge grading [1]. On identical Opus 4.8 traffic, TrueForge came in at $8.50 per run against $11.80 per run on Claude Managed Agents - roughly 30% cheaper - while using 3.8 million tokens and about 40 minutes of latency versus 10 million tokens and 63 minutes for the hosted alternative [1]. A third harness tested in the same benchmark, 'deepagents', was the most expensive of the three at $21 per run and 16.5 million tokens [1]. TrueFoundry attributes the gap to fewer, better-timed model calls and context compaction instead of full conversation replay - the harness decides what the model needs to see next, rather than resending everything each turn. Accuracy across all three systems landed within a task of each other, since the underlying model caps what's achievable; the differentiation is entirely in how efficiently the harness gets there [1].


