SK電信與Nvidia在韓國的「Proprietary AI Foundation Model」（專有AI基礎模型）計畫下推進A.X K2，從A.X K1擴展為全棧、開源的AI平台，並透過Krafton-Rebellions聯盟，提供學術與商業用途。 摘要：本文報導SK電信與Nvidia合作開發A.X K2，作為A.X K1在韓國政府支持的計畫下的後繼者。該計畫旨在透過由Krafton-Rebellions主導的聯盟，打造全棧、開源的AI平台；研究聚焦於多模態與視覺-語言模型，並向學術與產業提供A.X模型的公開存取。

Gate News 訊息，4 月 22 日 — GPT-5.5 已出現在 OpenAI Codex 的模型選擇器下拉選單中，並位於清單最上方。 然而，當使用者選擇 GPT-5.5 並提交請求時，Codex 會回傳一個 400 錯誤，錯誤訊息為 "The 'gpt-5.5' model is not supported when using Codex with a Ch"

Gate News 訊息，4 月 21 日 — 安全公司 OX Security 已披露 MCP (Model Context Protocol) 中一項設計層級的遠端程式碼執行 (RCE) 漏洞。MCP 是供 AI 代理呼叫外部工具的開放標準，由 Anthropic 領導。攻擊者可在任何執行易受攻擊的 MCP 實作的系統上執行任意命令，從而

眾議院共和黨人提出《阻止美國 AI 模型竊取法案》（Deterring American AI Model Theft Act），以打擊濫用美國 AI 模型的中國與俄羅斯實體。該法案目前正在審查，可能導致制裁或列入黑名單，並可能在美國持續享有晶片優勢的情況下，加速中國的科技自主能力。

OpenAI、Anthropic 和 Google 正在合作，以打擊中國競爭對手透過從美國模型擷取輸出來提升 AI 能力的努力，並透過 Frontier Model Forum 共享資訊，以因應對抗性資料蒸餾。

中國的 AI 新創公司 GigaAI 正在推進世界模型（world model）技術，透過龐大的工業數據來強化實體 AI（physical AI），在表現上超越領先的美國模型。儘管它在資金與合作方面有所進展，但在安全部署與真實世界的複現方面的挑戰仍然至關重要。

Claw Intelligence 已獲得 $3 百萬美元的種子輪融資，目標是透過簡化使用者與 Web3 生態系的互動來降低門檻。其平台使用模型內容協定（Model Context Protocol）以精簡資料流程，並包含安全的程式碼執行沙盒與由 LLM 驅動的裝置控制等功能。

Meituan Longcat Team's open-source LongCat-Next is a multimodal model based on MoE architecture, integrating five capabilities including text, visual understanding, image generation, and speech. Its core design DiNA achieves unified task processing through discrete tokens, while the dNaViT used in the visual aspect enables excellent image generation performance. Compared with similar models, LongCat-Next demonstrates leading benchmark performance across various metrics, showcasing its advantages in multimodal understanding and generation.

According to 1M AI News monitoring, Mercedes-Benz China announced that an edge-side multimodal large model jointly developed with Tsinghua University and Zhipu, an AI large model company listed on the Hong Kong Stock Exchange in January this year, will be deployed in the next-generation Maybach S-Class and the new S-Class sedan. The model is deployed in the rear-seat entertainment system, integrating natural language processing with multimodal understanding and generation capabilities in vision, audio, and other modalities. Combined with in-vehicle cameras and other perceptual hardware, it completes inference under local computing power conditions. According to Zhipu's official statement, Mercedes-Benz has become the first automotive brand to apply multimodal large models in rear-seat entertainment systems.

Circle Internet Group stock price plummeted 20%, with a market value loss of $4.6 billion, due to the draft "Digital Asset Market Transparency Act" prohibiting passive income provision to stablecoin holders. Despite short-term impacts on application restrictions, analysts believe the act will build regulatory moats for Circle, optimizing its business model. Additionally, Tether commits to accepting audits to enhance transparency. USDC's future performance will influence market trends.