AI Weekly 4/17–4/24 | OpenAI Stack, Anthropic Politics, Figma Tumbles

Three axes moved this week — down to compute (OpenAI-Cerebras $20B + equity), up to product distribution (GPT-5.5, Images 2.0, ChatGPT ads), and sideways into politics (Anthropic CEO at the White House, Mythos leak, Claude Design moves Figma stock).