Meta says it has caught up with Anthropic and OpenAI with Muse Spark 1.3, its most powerful AI model yet

Meta Platforms Inc. says it has more or less caught up with the biggest artificial intelligence labs with the release of its most powerful large language model so far, Muse Spark 1.3.

The company said in a blog post today that the new model can be accessed by developers willing to pay for it through its application programming interface. It’s also going to be rolled out to users of Meta’s social media platforms, Facebook and Instagram, as well as the Meta AI application, in the coming days.

In an interview with Bloomberg, Meta Chief AI Officer Alexandr Wang said Muse Spark 1.3 represents the company’s biggest jump in model performance so far, putting it at the same level as the most recent models created by OpenAI Group PBC and Anthropic PBC. Pointing to advances in Muse Spark 1.3’s coding and agentic automation capabilities, Wang said it is now “competitive” with Anthropic’s Claude Fable 5.1 and “better than” OpenAI’s GPT-5.6 Sol model, especially in terms of its ability to generate code. It also “outperforms any of the current Chinese models out there,” Wang claimed.

Such claims are always difficult to judge when it comes to AI models, because they tend to be better at some tasks than others, and it’s easy for companies to game the benchmark tests they publish. However, an independent analysis by Artificial Analysis showed that Muse Spark achieved a score of 62 on its Intelligence Index after evaluating its performance across a host of popular benchmarks, putting it behind only Fable 5.1 and Opus 5, and ahead of OpenAI’s models.