Meta Abandons Llama for Muse Spark — The End of Open-Source AI's Biggest Champion

Reddit r/AI_Agents News
meta llama muse-spark open-source proprietary ai-model llm

Summary

Meta has abandoned its open-weight Llama model family in favor of a fully proprietary model called Muse Spark, developed by Alexandr Wang's team, marking the end of Meta's role as a champion of open-source AI.

>Meta has officially abandoned its open-weight Llama family in favor of Muse Spark — a **fully proprietary** model built by Alexandr Wang's MSL team. The Llama era is over. > **The Llama 4 disaster:** • Scored 18 on the Intelligence Index (vs GPT-5.4 at 57) — "underwhelming / mid" • Benchmark gaming allegations emerged • Llama 4 Behemoth indefinitely delayed > **The $15B scorched-earth rebuild:** • Alexandr Wang hired as Chief AI Officer (June 2025) + $14.3B for 49% of Scale AI • Yann LeCun left, called new leadership "inexperienced" • Muse Spark scores **52 on Intelligence Index** — biggest single-generation jump ever > **The closed-source pivot:** • Llama → maintenance mode. Muse Spark → cloud-only API, no weights, paid • No migration path. 1.2B Llama downloads now stranded • Andrew Ng: *"A significant loss for the developer community"* > Where do Llama developers go from here? Mistral, DeepSeek, Qwen, or proprietary APIs.
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