Release
Terminal-Bench 4.0 released as a new major version of the continuous benchmark
The Terminal-Bench team published version 4.0 of its command-line agent benchmark on August 28, 2026, a month after announcing that it would be maintained as a continuous benchmark with semantic versioning. The release removed eight tasks, fixed nineteen, and set a flat eight-hour agent timeout for every task; it is a major version because these changes require re-running trials. It runs through the Harbor framework.123
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USASI. (2026, September 29). Terminal-Bench 4.0 released as a new major version of the continuous benchmark. United States of America Superintelligence. https://unitedstatesofamericasuperintelligence.com/news/terminal-bench-4-0-released/
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@misc{usasi_news_terminal_bench_4_0_released,
author = {{USASI}},
title = {Terminal-Bench 4.0 released as a new major version of the continuous benchmark},
year = {2026},
month = sep,
howpublished = {\url{https://unitedstatesofamericasuperintelligence.com/news/terminal-bench-4-0-released/}},
note = {United States of America Superintelligence. Last updated 2026-09-29}
}The date is when this page was last updated. Add the date you read it if your style needs one.