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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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GPT-5 vs o4-mini

Verdict

GPT-5 leads 20–0 across 20 shared benchmarks.

GPT-5 20 · o4-mini 0 · higher isn't always better — see caveats.

Per-benchmark head-to-head

GPT-5o4-mini
  • 88
    Aider polyglot
    72
  • 65.7
    ARC-AGI
    58.7
  • 9.86
    ARC-AGI-2
    6.11
  • 37
    Chess Puzzles
    26
  • 12.6
    CritPt
    0.6
  • 97.2
    Fiction.LiveBench
    77.8
  • 21.95
    FrontierMath-Tier-4-v2-Private
    4.88
  • 55.44
    FrontierMath-Tiers-1-3-v2-Private
    36.14
  • 34.8
    GDPval
    25.3
  • 81
    GeoBench
    64
  • 81.57
    GPQA diamond
    72.81
  • 6.9
    GSO-Bench
    3.6
  • 21.55
    HLE
    13.95
  • 87.23
    Lech Mazur Writing
    75
  • 98.13
    MATH level 5
    97.83
  • 91.38
    OTIS Mock AIME 2024-2025
    81.65
  • 48.04
    SimpleBench
    26.44
  • 50.6
    SimpleQA Verified
    23.9
  • 49
    VPCT
    36.25
  • 60.7
    WeirdML
    52.56
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

  • GPT-598.13
  • o4-mini97.83