@AnthropicAI: Correction: Claude Opus 4's ~3x average speedup dates to May 2025, not May 2024. This evaluation has only existed since…

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Summary

Anthropic issued a correction clarifying that Claude Opus 4's ~3x average speedup dates to May 2025, not May 2024, and that earlier models from May 2024 showed no speedup on the backtested evaluation.

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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