AI Progress Tracker

    Claude Haiku 5.5 · claude-haiku-5-5

    Anthropic · 7 Oct 2026

    Ask the Advisor about this model
    73from 5
    benchmarks

    This profile covers the Claude Haiku 5.5 model designation. Not yet confirmed by public reporting.

    context: 1Mtextimagefile$0.10 / $0.50 per 1M tokens (in / out)

    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 questions89.6%9 Oct 2026View
    OTIS Mock AIME 2024-25Competition mathematics98.9%7 Oct 2026View
    SimpleQA VerifiedShort factual questions (hallucination resistance)23.8%9 Oct 2026View
    LMArena TextHuman preference Elo from blind chat votes (not a percentage)1401 Elo22 Oct 2026View
    LMArena WebDevHuman preference Elo for building web apps (not a percentage)1586 Elo23 Oct 2026View

    Weighted mean of 3 verified benchmark results: GPQA Diamond 89.6%, OTIS Mock AIME 2024-25 98.9%, SimpleQA Verified 23.8%.

    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.

    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.