AI Progress Tracker

    GPT-5.5 Instant · GPT-5.5 Instant

    OpenAI · 5 May 2026

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    benchmarks

    This profile covers GPT-5.5 Instant from OpenAI. Not yet confirmed by public reporting.

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    Benchmark results

    Every figure links to where it was published. Compare like with like — harnesses and prompt setups differ between vendors.

    BenchmarkScoreSource
    GPQA DiamondPhD-level science questions82.5%2 Aug 2026View
    OTIS Mock AIME 2024-25Competition mathematics68.1%2 Aug 2026View
    LMArena TextHuman preference Elo from blind chat votes (not a percentage)1419 Elo22 Oct 2026View

    Weighted mean of 2 verified benchmark results: GPQA Diamond 82.5%, OTIS Mock AIME 2024-25 68.1%.

    Capabilities

    • Not yet confirmed by public reporting.

    What improved

    • Not yet confirmed by public reporting.

    Known flaws & limitations

    • Not yet confirmed by public reporting.

    Risks, safety & security issues

    • Not yet confirmed by public reporting.

    Good fit for

    • Not yet confirmed by public reporting.

    Poor fit for

    • Not yet confirmed by public reporting.
    Security & risk dashboardLatest vulnerabilities, advisories and real-world incidents for GPT-5.5 Instant

    References

    Profile last reviewed 10/27/2026 and re-checked automatically every few hours against the vendor's published documentation, papers and public leaderboards. Scores come from the cited benchmark results above — confirm limits and pricing against the provider's own documentation before building on them.