Meta CEO Mark Zuckerberg ended a three-year silence on X (formerly Twitter) recently. He returned to the platform to announce the company’s newest artificial intelligence model, Muse Spark 1.1, alongside Meta’s first-ever paid developer platform, the Meta Model API.
Posting from his long-dormant @finkd handle, Zuckerberg described Muse Spark 1.1 as a strong agentic and coding model available at a very low price. Unlike earlier AI models built simply to respond to prompts, Muse Spark 1.1 is designed to act, capable of planning tasks, using software tools, and operating computer interfaces across desktop, mobile, and browser environments. The model also supports a 1-million-token context window and can delegate execution to multiple sub-agents working in parallel.
The Meta Model API marks a notable shift in strategy for Meta, which has historically given away its open-weight Llama models for free to build market share. This time, the company is charging developers for access, with new sign-ups receiving $20 in free credits before billing begins.
The pricing is seen as a direct challenge to rivals including OpenAI and Anthropic. According to Bloomberg, Zuckerberg described competitors’ pricing as carrying “very high margins,” arguing Meta could offer frontier-level intelligence at a more affordable cost.
Notably, Elon Musk’s SpaceXAI, working with coding startup Cursor, released a rival agentic model, Grok 4.5, on the same day, priced at $2 per million input tokens, above Meta’s reported $1.25 rate. Musk reacted to the coincidence in a post on X, writing “Jinx” and “Same time.”
Zuckerberg’s choice of platform drew almost as much attention as the announcement itself. He has largely stayed away from X in recent years, favouring Meta’s own platforms like Facebook, Instagram, and Threads. Shoshana Winter, CEO of Converge Marketing, told Inc. that posting on X specifically after three years “guaranteed the news coverage would not be limited to Meta’s channels.”
Reports on Meta’s stock reaction were mixed, with some outlets noting a modest rise while others reported a slight dip in Thursday’s trading, reflecting an overall muted investor response to the news.
Zuckerberg indicated more updates from Meta’s Superintelligence Labs are expected soon.
