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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-5.4 vs GPT-5.5

Verdict

GPT-5.5 leads 18–0 across 18 shared benchmarks.

GPT-5.4 0 · GPT-5.5 18 · higher isn't always better — see caveats.

Per-benchmark head-to-head

GPT-5.4GPT-5.5
  • 35.9
    APEX-Agents
    38.4
  • 93.67
    ARC-AGI
    95
  • 73.95
    ARC-AGI-2
    85
  • 44
    Chess Puzzles
    54
  • 21.7
    CL-bench Life
    22.2
  • 23.43
    CritPt
    27.14
  • 35.09
    DeepResearch Bench
    54.01
  • 49
    FrontierMath-Tier-4-v2-Private
    72.5
  • 78.6
    FrontierMath-Tiers-1-3-v2-Private
    85.26
  • 31.6
    GBAEval
    53.22
  • 91.07
    GPQA diamond
    92
  • 31.37
    GSO-Bench
    40.2
  • 95.3
    OTIS Mock AIME 2024-2025
    100
  • 20.23
    PostTrainBench
    25.02
  • 44.83
    SimpleQA Verified
    63.1
  • 76.86
    SWE-Bench verified
    80.58
  • 81.8
    Terminal Bench
    84.7
  • 77.7
    WeirdML
    84.91
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-5.495.3
  • GPT-5.5100

GPT-5.5 vs …

  • vs PowerMoE-3b
  • vs Claude Fable 5
  • vs Gemini 3.1 Pro
  • vs Llama 3.1-405B
  • vs phi-3-small 7.4B