Media

AI news brief: OpenAI second-in-command Fidji Simo announced she is stepping down from her full-time role because her medical leave lasted longer than expected, preventing her from continuing her executive duties. Simo originally joined OpenAI in 2024 as head of the CEO Office, making her one of the most important executives under Sam Altman, responsible for coordinating the company commercialization and operations strategy. The timing of this departure is sensitive — OpenAI is actively evaluating an IPO while facing fierce competition from Anthropic in the enterprise market, making stable leadership critical for pushing commercial initiatives forward. OpenAI has not yet announced a successor or transition plan, so this story is worth watching.

AI News Briefing: This week Bloomberg reported that Microsoft is replacing OpenAI’s technology with its own in-house MAI models in some applications, with a wave covering productivity tools like Word and Excel, to reduce external API cost dependency. The news sparked widespread industry discussion, with observers questioning whether the years-long deep partnership between the two companies is loosening. In response to the speculation, Ope…

AI News Brief: SpaceXAI officially released its latest model Grok 4.5 on Wednesday — it’s also the first large language model the company has launched since going public. The company positions Grok 4.5 as an all-purpose workhorse model focused on automating everyday knowledge work including programming, office documents, research, and content writing. On cost competitiveness, SpaceXAI claims Grok 4.5’s t…

AI News Brief: Google’s SynthID watermark system successfully helped expose a high-profile AI-generated fake image this week, becoming a landmark case in deepfake prevention technology.

AI News Brief: French AI startup ZML has officially launched its inference server software LLMD, aiming to let major open-source LLMs run at near-native or beyond-native peak speeds across chips from various vendors. Supported hardware covers Nvidia GPUs, AMD, Google TPU, Apple Metal, and Intel Arc. Founder Steeve Morin said AI inference is gradually surpassing model training in importance, but the software-architecture divide locks enterprises into specific vendors. ZML’s core pitch is to let enterprises and cloud providers mix and match chips from different sources, cutting costs or energy use to make large-scale AI adoption possible.

AI news brief: Former OpenAI CPO Kevin Weil has joined the board of Seattle-based rocket startup Stoke Space as a formal director, following his earlier role as an angel investor. Weil previously held senior roles at Twitter, Meta, and Planet Labs, and most recently led OpenAI’s accelerated science research program before stepping down in October 2025. Stoke has raised 1.34 billion dollars to date and is targeting first flight this year with its fully reusable Nova rocket.

AI News Brief: Microsoft has begun replacing some third-party models from OpenAI and Anthropic with its in-house MAI models in core Office software like Excel and Word to handle a portion of user prompts. This strategic shift, reported by Bloomberg, signals Microsoft is actively reducing its reliance on external AI vendors and the associated licensing costs. In fact, Microsoft had previously…

AI News Brief: Decagon CEO Jesse Zhang recently posted a counterintuitive take — the more mature enterprise AI deployments become, the more they tend to switch to lightweight open-source models, yet overall spending on frontier models has barely dropped. He argues frontier and open-source models aren’t competitors but two stages of the same lifecycle — expensive frontier models validate new use cases, and once a scenario matures it’s handed off to cheaper open-source alternatives…

AI News Flash: Meta officially launched Muse Image on Tuesday, a brand-new AI image generator developed by its Meta Superintelligence Labs, internally codenamed ‘Mango’. It’s now available for free through the Meta AI app, Instagram Stories, and WhatsApp. Muse …

AI News Brief: Anthropic’s general-purpose knowledge work AI agent tool, Claude Cowork, has officially expanded to web and mobile platforms, now available to Max subscribers. Launched in January this year as a desktop application, this update allows users to initiate tasks on their computer and track progress on their phone. Even when the laptop is closed, the agent continues running in the background and delivers results upon completion. …