Meta Officially Opens Muse Spark 1.3 Max, the Strongest Reasoning Tier

Meta Officially Opens Muse Spark 1.3 Max, the Strongest Reasoning Tier

N
News Editor
2026-09-05 15:35:44
Meta has released Muse Spark 1.3 Max, the highest reasoning tier of the model. Previously limited to partners due to safety testing, it is now available in Muse Code and the Meta Model API. Chief AI officer Alexandr Wang says it outperforms the high and xhigh tiers on coding and agent tasks. The model scored 68 on the Coding Agent Index, entering the top tier.

Meta has officially released Muse Spark 1.3 Max, the highest reasoning tier of the Muse Spark 1.3 model. When Muse Spark 1.3 was first launched, the Max tier was held back for additional safety testing and only available to a limited number of partners. Now that safety testing is complete, developers can use the tier directly in Muse Code and the Meta Model API.

Meta's chief AI officer Alexandr Wang said that Max significantly outperforms the high and xhigh tiers on coding and agent tasks. According to the Coding Agent Index by Artificial Analysis, Muse Code combined with Muse Spark 1.3 Max scored 68 points, placing it in the top tier.

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Meta Officially Opens Muse Spark 1.3 Max, the Strongest Reasoning Tier | Bit.Fan