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tensor.news grades benchmarks and tags model claims by evidence status. Every fact carries a source record and provenance. Scores are framed as task performance under a disclosed harness, never as deployed capability.

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Claude Opus 4.5 vs GPT-5.2

Verdict

GPT-5.2 leads 15–5 across 20 shared benchmarks.

Claude Opus 4.5 5 · GPT-5.2 15 · higher isn't always better — see caveats.

Per-benchmark head-to-head

Claude Opus 4.5GPT-5.2
  • 18.4
    APEX-Agents
    34.3
  • 80
    ARC-AGI
    86.2
  • 37.64
    ARC-AGI-2
    52.91
  • 12
    Chess Puzzles
    49
  • 21.1
    CL-bench
    18.2
  • 4.88
    FrontierMath-Tier-4-v2-Private
    31.7
  • 34.39
    FrontierMath-Tiers-1-3-v2-Private
    67.4
  • 45.5
    GDPval
    49.7
  • 81.4
    GPQA diamond
    88.53
  • 26.5
    GSO-Bench
    27.4
  • 21.43
    HLE
    24.16
  • 86.1
    OTIS Mock AIME 2024-2025
    96.11
  • 17.29
    PostTrainBench
    21.38
  • 3.75
    Remote Labor Index
    2.5
  • 54.4
    SimpleBench
    34.96
  • 41.8
    SimpleQA Verified
    38.9
  • 76.65
    SWE-Bench verified
    73.76
  • 63.1
    Terminal Bench
    64.9
  • 10
    VPCT
    76
  • 63.7
    WeirdML
    72.2
A higher number is not always a better model. Each score is task performance under a disclosed harness, and some of these benchmarks are saturated or scored under mixed harnesses. Follow any benchmark to its integrity grade before reading a win as decisive.

Follow the record

These models

  • Claude Opus 4.586.1
  • GPT-5.296.11