27. April 2026
Show HN: OSS Agent I built topped the TerminalBench on Gemini-3-flash-preview
Scored 65.2% vs google’s official 47.8%, and the existing top closed source model Junie CLI’s 64.3%. Since there are a lot of reports of deliberate cheating on TerminalBench 2.0 lately ( https://debugml.github.io/cheating-agents/ ), I would like to also clarify a few things
- Absolutely no {agents/skills}.md files were inserted at any point. No cheating mechanisms whatsoever
- The cli agent was run in leaderboard compliant way (no modification of resources or timeouts)
- The full terminal bench run was done using the fully open source version of the agent, no difference between what is on github and what was run. I was originally going to wait for it to land on the leaderboard, but it has been 8 days and the maintainers do not respond unfortunately (there is a large backlog of the pull requests on their HF) so I decided to post anyways. HF PR: https://huggingface.co/datasets/harborframework/terminal-ben… It is astounding how much the harness matters, based on this and other experiments I have done.
Comments URL: https://news.ycombinator.com/item?id=47920787
Points: 4