HLE Pro ComputeactiveReasoningTool use
HLE Pro Compute: Humanity's Last Exam — With Tools Pro Compute
Metric: Accuracy (higher is better)Introduced: 2026
Humanity's Last Exam with tools measured with GPT-5.5 Pro extra parallel test-time compute. This is not the same row as standard with-tools HLE.
Models ranked
1
tracked on this benchmark
Score band
57.2 – 57.2
best → lowest tracked
Snapshot trend
—
need ≥2 snapshots
Leaderboard
Tracked models ranked by Accuracy (higher is better).
#Model variant and provenanceRelative to leaderScore
1
GPT-5.5 Pro
57.2Version: HLE with tools; GPT-5.5 Pro computeHarness: Not recordedEvaluator: Not recordedObserved: Apr 24, 2026Confidence: Not recordedSource
Notes: One of the explicitly Pro-differentiated scores in the handoff; compare carefully against standard with-tools rows.
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: Jun 17, 2026