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Metaが「Muse Spark 1.3」を公開

4/9/2026

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Metaは9月2日(現地時間)、 「Muse Spark 1.3」 を公開しました。8月初めにリリースされた「Muse Spark 1.2」に続くAIモデルで、エージェント的なタスクとコーディングの性能が向上しているということです。「Artificial Analysis Intelligence Index」では、「max」推論レベルでは63で、Anthropicの「Claude Fable 5」(63)と同じ、OpenAIの「GPT-5.6 Sol」(62)を上回るスコアを記録しており、2026年9月1日に発表された「Fable 5.1」(66)に及ばないもののトップレベルの性能を備えていることがわかります。
「Muse Spark 1.3」について生成AIに深掘り調査させましたのでご参照ください。なお、生成AIによる調査・分析結果は、公開された情報だけに基づくものであり、必ずしも実情を示したものではなく、誤った情報を含む可能性があることにご留意のうえ、ご参照ください。
 
Muse Spark 1.3
https://developer.meta.com/ai/models/muse-spark/
 
 
Meta Releases “Muse Spark 1.3”
Meta released Muse Spark 1.3 on September 2 (local time). Following Muse Spark 1.2, which was released in early August, the new AI model reportedly delivers improved performance in agentic tasks and coding.
On the Artificial Analysis Intelligence Index, Muse Spark 1.3 achieved a score of 63 at the “max” reasoning level. This matches Anthropic’s Claude Fable 5 at 63 and exceeds OpenAI’s GPT-5.6 Sol at 62. Although it falls short of Fable 5.1, which was announced on September 1, 2026, and scored 66, the results indicate that Muse Spark 1.3 offers top-tier performance.
I asked a generative AI system to conduct an in-depth investigation into Muse Spark 1.3. Please refer to the findings below. Please note, however, that the research and analysis generated by AI are based solely on publicly available information, may not necessarily reflect the full reality, and may contain inaccurate information.

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