Hermes and Pi Agent led on the average cost per task, while Claude Code cost about 3.7x as much as Pi: - 0.39 Hermes Agent - 0.40 Pi Agent…

Hermes and Pi Agent led on the average cost per task, while Claude Code cost about 3.7x as much as Pi: - 0.39 Hermes Agent - 0.40 Pi Agent - 0.47 Codex - 0.51 OpenCode - 0.54 Kimi Code - 1.47 Claude Code The median cost tells the same story: 0.29 in Pi Agent and Hermes, 0.35 in OpenCode, 0.38 in Kimi Code, 0.39 in Codex and 0.72 in Claude Code, so the cost gap holds for a typical task and is not driven by a few expensive runs. We calculated these costs using Kimi K3’s list prices: 3/1M input tokens, 0.30/1M cached input tokens, and 15/1M output tokens.

Source: Nous Research (X) | 2026-07-31