The week ahead: 20250721

• [Blog] Perplexity to launch its own browser, with rumors of OpenAI’s upcoming release of a similar product, signaling challenges to Google Chrome’s control over how users access online content.

• [Tweet] OpenAI’s new model achieves gold medal-level performance in IMO.

• [Blog] Calvin’s thoughts as he departs OpenAI.

• Varun Mohan and the rest of the Windsurf core team start at Google DeepMind.

• [Tweet] Thinking Machines Lab, the AI startup led by Mira Murati, OpenAI’s ex-CTO, has raised $2B while still not clearly formulating their product.

• [Blog] State Space Models.

Have a great week!