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Facebook employees moved into MPK 20, a Frank Gehry-designed office building topped by a nine-acre rooftop park, expanding the company's Menlo Park headquarters.

Meta releases Llama 3.1 in 8B, 70B and 405B sizes with a 128K context window; the 405B, trained on over 15 trillion tokens, is billed as the first frontier-level open model and is free to download.

Meta releases Llama 3.2 at Connect 2024: lightweight 1B and 3B text models for phones and edge devices and 11B and 90B vision models, its first multimodal Llama, all with 128K context and open weights; the vision models were not offered in Europe.

Meta releases Llama 3.3 70B, a text-only 70B instruction-tuned model that Meta says delivers the performance of the 405B Llama 3.1 at lower cost, with a 128K context window and open weights; Meta's chart prices it at $0.1 per 1 million input tokens.

Meta releases Muse Spark, the first model from Meta Superintelligence Labs and its first frontier model without open weights; it powers the Meta AI app and scored 52 on the Artificial Analysis Intelligence Index at launch, behind only Gemini 3.1 Pro, GPT-5.4 and Claude Opus 4.6.

Meta releases Muse Spark 1.1, a multimodal reasoning model for agentic tasks with a 1M-token context window, together with a public preview of the Meta Model API at $1.25 per 1 million input tokens and $4.25 per 1 million output tokens; it scores 51 on the Artificial Analysis Intelligence Index.

Meta releases Muse Spark 1.2, a coding-focused update to Muse Spark 1.1 co-trained with the new Muse Code terminal agent, at an unchanged $1.25 per 1 million input tokens and $4.25 per 1 million output tokens; it scores 54 on the Artificial Analysis Intelligence Index.

Meta releases Muse Spark 1.3, its fourth Muse Spark model in five months, trained for long agentic and coding work and still priced at $1.25 per million input tokens; Artificial Analysis ranks its top variant behind only Anthropic's Claude Fable 5.1 and Opus 5.

Meta releases Muse Wonder and Muse Wonder Full, its most capable models yet, built around 'Active Memory' and 'Active Focus' for personal and professional agents; Muse Wonder is live on the Meta Model API and Muse Code, Wonder Full for Muse Code subscribers.

Blind's layoff tracker lists an unconfirmed rumour of Meta layoffs at Menlo Park on 18 November 2026, with no count. Meta cut about 8,000 jobs in May and Zuckerberg told staff to expect no more company-wide layoffs in 2026, so any round would likely be team-level. Low confidence.