We Benchmarked Our Agent Against opencode: Same Task, Same Model, 40 Percent Fewer Credits

Every coding agent says it is efficient. Almost none of them publish the bill. So we ran the boring experiment: the same bugfix, the same model, the same API, the same prices, and a byte identical prompt, once through opencode and once through the coding agent inside Locally Uncensored. Headline: opencode averaged 2157 credits over three runs. Our 2.6.6 agent finished the identical task for 1298 . That is about 40 percent less, and even the cheapest opencode run came in 29 percent above our number. The interesting part is not the headline. It is why the gap exists, and it is not the reason most people guess. Setup A cost comparison is only worth reading if everything that drives cost is nailed down. What was held constant: Held constant Value Task Fix a failing test in a small npm repo, then commit Repository Three files, a one line bug in add.js , tests red at the start Prompt Byte identical, sha256 29cec6c3...cf62687 Model deepseek-ai/DeepSeek-V3.2 Endpoint The same OpenAI compatible API for both agents Prices Same account, same tier, same per token rate Counting One wire proxy in front of the API, credits read before and after every run opencode 1.18.21 from npm, wired as an OpenAI compatible provider, opencode run --auto , otherwise defaults Success was defined before the runs, not after: npm test passes exactly one commit, with the required message only add.js changed clean working tree at the end All four runs cleared that bar. Nothing failed, so cost is the only variable that moved. The numbers Run Credits Requests Prompt tokens Success opencode, run 1 1679 8 98,789 yes opencode, run 2 2433 11 146,058 yes opencode, run 3 2358 11 146,387 yes Locally Uncensored 2.6.6 1298 16 74,629 yes Locally Uncensored 2.6.5 4395 30 257,270 yes Read the last row first. Our own shipped agent from one release earlier is the most expensive thing in that table, by a lot. This is not a chart built so that we win by construction. It is a chart that shows what one efficiency pass is