Meta’s new AI model edges closer to OpenAI and Anthropic, its AI Chief says
Meta’s new AI model edges closer to OpenAI and Anthropic, its AI Chief says
摘要: Artificial Intelligence
Meta’s new AI model edges closer to OpenAI and Anthropic, its AI Chief says
Alexandr Wang says the new model is competitive
正文
Artificial Intelligence
Meta’s new AI model edges closer to OpenAI and Anthropic, its AI Chief says
Alexandr Wang says the new model is competitive with Claude Fable 5.1 and better than GPT-5.6 Sol at coding, but the AI Act's free and open-source exemption is switched off for models with systemic risk, which is where a frontier release lands
September 2, 2026 - 11:19 pm
Entrance sign at Meta’s headquarters complex in Menlo Park, California.
Credit: Nokia621 via Wikimedia Commons (CC BY-SA 4.0)
Meta has released Muse Spark 1.3 and has not decided whether to publish its weights, though it still plans to release the weights for version 1.2. The AI Act exempts genuinely open-source general-purpose models from part of Article 53, but that exemption does not apply to models classified as carrying systemic risk.
Meta has released Muse Spark 1.3, its most capable model so far. Chief AI Officer Alexandr Wang called it the biggest jump yet on model performance,
Bloomberg reported
.
Wang put it level with the field. He called it competitive with Anthropic’s Claude Fable 5.1, better than OpenAI’s GPT-5.6 Sol at coding, and ahead of any current Chinese model.
The weights are the open question. Meta has not decided whether to publish 1.3’s, still plans to publish 1.2’s, and the first Muse Spark arrived in April
closed source
.
Those comparisons are hard to check. Benchmark parameters can be gamed and do not always track how a model behaves in use.
In Europe the weights decision is also a compliance decision.
Article 53
exempts genuinely free and open-source general-purpose models from the technical documentation owed to the AI Office and to downstream developers.
The licence has to be real to qualify. Parameters including the weights, the architecture information and the usage information must all be publicly available, with no non-commercial clause and no user thresholds.
Then the exemption stops at the top. A model classified as carrying systemic risk owes ev