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Qiita (LLM)Japan

【2026年9月】Claude Sonnet 5.5がリリース!Sonnet 5と同価格で30%高速・API破壊的変更5つまとめ

October 7

はじめに 2026年9月28日、Anthropic が Claude Sonnet 5.5 を公開しました。Sonnet 5 の後継で、Opus 5.5 と並ぶ5.5世代の Sonnet です。Haiku 5.5 も「今後数週間以内」に出ると、発表ページで予告されています...

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