Meta released Muse Spark 1.3, now ranked #3 globally by AAII. It matches GPT-5.6-Sol and Opus 5 on key benchmarks.
The model is over 90% cheaper with training opt-in.
Open weights are coming soon.
What happened
Meta released Muse Spark 1.3, which per AAII is now the #3 model in the world. Mark Zuckerberg announced it is rolling out today with what he calls frontier performance 'almost too cheap to meter,' and promised open weights releases coming soon.
Why it matters
The model is positioned as Meta's biggest jump yet on coding and agentic work, and the pricing model is over 90% cheaper if you opt in to training. This makes frontier-level AI dramatically more accessible, potentially reshaping the competitive landscape.
What to watch
The reported long-context result of 98.1% on MRCR 512k–1m is notable. Some commenters question whether this means Muse Spark has solved 'context rot' at million-token scale, which would be a significant technical achievement.
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