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Terminal-Bench 4.0

Metric: Pass@1 (higher is better)Introduced: 2026

Terminal-Bench 4.0 is the latest Harbor Framework terminal agent benchmark. Keep separate from Terminal-Bench 2.1 and 3.0; DeepSeek reports scores with DeepSeek Harness Minimal mode and a 1M-token context window.

Models ranked

1

tracked on this benchmark

Score band

31.2 – 31.2

best → lowest tracked

Snapshot trend

need ≥2 snapshots

Leaderboard

Tracked models ranked by Pass@1 (higher is better).

Compare candidates
#Model variant and provenanceScore
1
DeepSeek V4.1 Flash
Version: Terminal-Bench 4.0 Pass@1; DeepSeek Harness Minimal mode; 1M contextHarness: Not recordedEvaluator: Not recordedObserved: Sep 10, 2026Confidence: Not recordedSource
31.2

How to read this benchmark

This benchmark scores models where higher is better. Use scores for directional filtering and shortlisting, not universal quality ranking; then validate pricing, context window, provider availability, and fit for your workload.

Trust this score when

  • There is a fresh timestamped snapshot (or multiple snapshots) for this benchmark.
  • The model list covers the same version family you can actually deploy today.
  • Top candidates overlap with your required routing and feature requirements.

Be cautious when

  • There is only one benchmark snapshot or the dataset appears stale.
  • The benchmark metric direction is opposite of your decision objective.
  • The score difference between options is narrow and likely within implementation variance.

Related benchmarks

Last reviewed: Sep 10, 2026

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