not much happened today

**MCP tools** remain relevant for deterministic APIs despite ergonomic criticisms, with new **web MCP support in Chrome v146** enabling continuous browsing agents. Persistent memory is emerging as a key differentiator for agents, with IBM improving task completion rates and multi-agent memory framed as a computer architecture challenge. Agent UX is evolving towards always-on, cross-device operation, exemplified by **Perplexity Computer** on iOS and **Claude Code** session management. **Anthropic** released **Opus 4.6 1M context** as default with no extra long-context API charges, achieving **78.3% on MRCR v2 at 1M tokens**. Sparse attention optimizations like **IndexCache** in **DeepSeek Sparse Attention** yield significant speedups on large models with minimal code changes.