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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 o3-pro

Verdict

GPT-5 leads 5–0 across 6 shared benchmarks.

GPT-5 5 · o3-pro 0 · 1 tied · higher isn't always better — see caveats.

Per-benchmark head-to-head

GPT-5o3-pro
  • 88
    Aider polyglot
    84.9
  • 65.7
    ARC-AGI
    59.3
  • 9.86
    ARC-AGI-2
    4.86
  • 97.2
    Fiction.LiveBench
    97.2
  • 87.23
    Lech Mazur Writing
    86.28
  • 60.7
    WeirdML
    58.21
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
  • o3-pro97.2