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GPT-5.5 System Card Figures Inconsistent

·2026.04.25 10:56

Key point

Two graphs in the GPT-5.5 system card showed opposite conclusions, sparking controversy.

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Details

In OpenAI's GPT-5.5 system card, two figures that appear to present the same evaluation results reached different conclusions.

  • In Figure 1(p.6), GPT-5.5 appears to produce more overconfident answers and fabricated facts than GPT-5.4.
  • In Figure 4(p.13), the same items are shown at lower rates instead, reading as though GPT-5.5 is better.
  • The body text also swings between the two extremes. The system card states that GPT-5.5 shows a mix of higher and lower rates of misalignment compared to GPT-5.4 across various items.

In other words, the document contains conflicting figures and interpretations side by side, revealing the possibility that the evaluation process or document management was not properly organized.

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