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AI Morning Brief — 17 July 2026

Moonshot AI shipped Kimi K3 overnight — a 2.8 trillion-parameter MoE model with a 1M-token context window that immediately topped Arena.ai’s Frontend Code leaderboard, displacing Claude Fable 5. On the same day, Thinking Machines Lab published Inkling, a 975B open-weight model that now leads U.S. rankings on Artificial Analysis.

Top stories

  • Kimi K3 launches as the largest open MoE model. Moonshot AI released Kimi K3 — 2.8T total parameters, 16 of 896 experts active per token, 1M-token context, and a novel Kimi Delta Attention mechanism claimed to deliver 6.3x faster decoding in long contexts. The API and web app are live now; open weights are promised by July 27. Community benchmarking places it ahead of Claude Opus 4.8 and close to, but below, Fable 5 and GPT-5.6 Sol. Pricing is significantly higher than prior Kimi generations, signalling the end of ultra-cheap frontier inference from China. via MarkTechPost
  • Thinking Machines Lab releases Inkling. Former OpenAI CTO Mira Murati’s lab published a 975B-A41B MoE multimodal model — trained on text, images, audio, and video — under the Apache 2.0 license. It tops U.S. open-weight rankings on Artificial Analysis, though the leading Chinese open models remain ahead on some tasks. A smaller 276B-A12B sibling ships alongside it. via Simon Willison
  • xAI open-sources Grok Build after a data breach. xAI’s Grok Build CLI was discovered to have silently uploaded user directories — including SSH keys and password databases — to Google Cloud. After public backlash, xAI pledged to delete the data and released the 844,530-line Rust codebase under Apache 2.0. via THE DECODER. In a separate development, xAI filed its first lawsuit against a user accused of generating CSAM via Grok — an implicit acknowledgment the model is capable of producing such content. via Ars Technica
  • Google rebrands NotebookLM and expands Gemini products. NotebookLM has been renamed Gemini Notebook and gained a cloud compute environment for writing and running code. Google AI Mode can now link to and interact with third-party apps. Google Vids acquired Gemini Omni-powered video generation and personal AI avatars. Separately, the EU formally ordered Google to share search data with rivals and open Android to competing AI assistants under the Digital Markets Act. via Google AI Blog
  • Gemini 3.5 Pro reportedly delayed. Google is said to be months behind schedule on its next Gemini flagship after the model fell short of internal targets — a pattern that previously followed Meta after Llama 4 and xAI after Grok 4. via X · @emollick
  • Linus Torvalds draws a line on AI in the Linux kernel. Torvalds stated he will “very loudly ignore” calls to ban AI tools from kernel contributions, telling objectors to fork the project or walk away. via Simon Willison

Who shipped

Moonshot AI dominated the cycle with Kimi K3, the most-discussed single release of the period. Thinking Machines Lab made its full-model debut with Inkling. Google pushed several product updates while absorbing EU regulatory pressure. xAI had a turbulent session — a data breach forced an open-source release and drew a CSAM-related lawsuit. Meta quietly published Muse Spark 1.1 on OpenRouter for U.S. developers.

Open-source pulse

Kimi K3 weights are expected by July 27 — at 2.8T parameters, it would be the largest open-weight model released to date. Inkling (Thinking Machines Lab) is available now under Apache 2.0. Grok Build, xAI’s Rust-based agent harness and TUI, was posted to GitHub under Apache 2.0 following the data breach disclosure.

Money, infra & hardware

Fireworks AI announced a $1.5B Series D at a $17.5B valuation after crossing $1B ARR — among the larger inference infrastructure rounds of the year. Neko Health raised $700M in a Series C led by Lightspeed Venture Partners for AI-powered preventive body scans, targeting U.S. clinic expansion. Energy IPOs are tracking their fastest pace this century as investors seek AI-adjacent positions.

Quiet corners

DeepSeek and Mistral were absent from primary-source announcements despite featuring heavily in community comparisons to K3. Cohere posted a partnership note with the University of Toronto but had no model news.

By the numbers

  • 377 stories in 24 h across 40+ sources
  • Most-mentioned model: Kimi K3
  • Most-mentioned lab: Moonshot AI
  • Notable absences: DeepSeek, Mistral

Compiled by AI Feed’s editor from all 377 headlines published on 16–17 July 2026.