Meta open-weights Muse Spark Open: 816B MoE built for coding and agents
Released Oct 15: 816B total / 42B active parameters, natively multimodal (text, image, audio, video in → text out), 1M-token context. Weights on Hugging Face (BF16 and NVFP4); APIs at Together, Fireworks, Baseten, Modal, Groq, Nebius, and OpenRouter. Runs on two Apple M5 Ultra Mac Studios via MLX, and on SGLang, vLLM, TensorRT-LLM, and llama.cpp. Top story on HN (~710 pts).
Meta AI Research·Meta·Hugging Face·HN
Gemini 4 Argon is broadly available with a 1M unified I/O token limit
Google opened Argon to paid Gemini API / AI Studio users, Antigravity (Ultra), and the Gemini app (Pro/Ultra) on Oct 13. Intro pricing is $2 / $10 per million tokens through Nov 30, then $4 / $20. Positioned for long-horizon science, coding, and agentic work; independent bakeoffs so far put it behind GPT-6 Astra and Opus 5.5 on some coding suites.
Google blog·Google