The 248th episode of Last Week in AI summarizes major developments from early June 2026, including Anthropic's release of Claude Fable 5, Apple's announcement of Siri AI, and OpenAI's confidential IPO filing.
- Anthropic released Claude Fable 5, a safeguarded version of Mythos 5, which showed benchmark improvements but sparked controversy over severe guardrails and silent downgrades.
- Apple announced Siri AI at WWDC, positioning it as a more capable conversational assistant integrated across iPhone features, reportedly built on a custom Gemini partnership.
- Google rolled out Gemini 3.5 Live Translate to Google Meet and cut Google AI Plus pricing while bundling more storage.
- OpenAI confidentially filed for an IPO amid an IPO race with Anthropic and SpaceX, while Bezos-backed Prometheus raised $12B for physical AI and DeepSeek sought a major external round.
- Google is paying SpaceX approximately $920M per month for GPUs, and Huawei-led teams claimed to post-train DeepSeek's 1.6-trillion-parameter model on Ascend 910C chips.
- Open-source updates included new Gemma 4 and Diffusion Gemma releases, while policy discussions featured a lab letter urging DNA/RNA screening laws and Anthropic CEO Dario Amodei calling for an FAA-like AI regulator.
The episode highlights the intensifying competition among major tech firms in model capabilities, infrastructure spending, and regulatory frameworks.