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Benchmark Registry. Terminal-Bench 4.0 benchmark results. Benchmark identifier: terminal-bench/4.0. https://benchmarkregistry.org/benchmarks/terminal-bench/4.0. Accessed [YYYY-MM-DD]. Data license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Attribution: Benchmark Registry, a project of Densa Labs — https://benchmarkregistry.org/ (CC BY 4.0). Include the cited record URL and identify any changes.

BibTeX

@misc{br_terminal_bench_4_0,
  title = {Terminal-Bench 4.0 benchmark results},
  publisher = {Benchmark Registry},
  url = {https://benchmarkregistry.org/benchmarks/terminal-bench/4.0},
  urldate = {YYYY-MM-DD},
  note = {Benchmark identifier: terminal-bench/4.0; data license: CC BY 4.0; access date to be filled by the reader}
}

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Benchmark: Terminal-Bench
Evaluated by: Terminal-Bench Team
Release date: August 28, 2026
Version: Terminal-Bench 4.0
Metric: Terminal-Bench Accuracy

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Score

Claude Opus 5.5 (max)

64.8%

www-cdn.anthropic.comTerminal-Bench AccuracyReported September 22, 2026AnthropicReport an issue

Cite

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Plain text

Benchmark Registry. Claude Opus 5.5: Terminal-Bench 4.0, 64.8% (max). Registry No. 20015; Record No. 42abde5e10b28c1632348899060acf5eb467b6c01ff2583527fc5727a130d6b6. https://benchmarkregistry.org/benchmarks/terminal-bench/4.0?view=history&result=42abde5e10b28c1632348899060acf5eb467b6c01ff2583527fc5727a130d6b6#BR-42abde5e10b28c1632348899060acf5eb467b6c01ff2583527fc5727a130d6b6. Accessed [YYYY-MM-DD]. Data license: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Attribution: Benchmark Registry, a project of Densa Labs — https://benchmarkregistry.org/ (CC BY 4.0). Include the cited record URL and identify any changes.

BibTeX

@misc{br_42abde5e10b28c1632348899060acf5eb467b6c01ff2583527fc5727a130d6b6,
  title = {Claude Opus 5.5: Terminal-Bench 4.0, 64.8\% (max)},
  publisher = {Benchmark Registry},
  url = {https://benchmarkregistry.org/benchmarks/terminal-bench/4.0?view=history\&result=42abde5e10b28c1632348899060acf5eb467b6c01ff2583527fc5727a130d6b6\#BR-42abde5e10b28c1632348899060acf5eb467b6c01ff2583527fc5727a130d6b6},
  urldate = {YYYY-MM-DD},
  note = {Registry No. 20015; Record No. 42abde5e10b28c1632348899060acf5eb467b6c01ff2583527fc5727a130d6b6; data license: CC BY 4.0; access date to be filled by the reader}
}

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20015

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