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Anthropic corrects Claude Opus 4 speedup claims to May 2025

By PulseAugur Editorial · [1 sources] ·

Anthropic has issued a correction regarding the reported speedup of its Claude Opus 4 model. The significant speed improvements, approximately threefold on average, were achieved in May 2025, not May 2024 as previously stated. An evaluation framework created in September 2024 was used to backtest earlier models, which showed no speedup in May 2024. AI

IMPACT Clarifies the timeline for a model's performance improvements, impacting understanding of its development trajectory.

RANK_REASON Correction to a previous announcement, not a new release or significant event.

Read on X — Anthropic →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Anthropic corrects Claude Opus 4 speedup claims to May 2025

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COVERAGE [1]

  1. X — Anthropic TIER_1 English(EN) · AnthropicAI ·

    Correction: Claude Opus 4's ~3x average speedup dates to May 2025, not May 2024.

    Correction: Claude Opus 4's ~3x average speedup dates to May 2025, not May 2024. This evaluation has only existed since September 2024, but we backtested it on earlier models: those from May 2024 showed no speedup whatsoever.

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