not much happened today

**OpenAI** rolled out **GPT-5.4**, achieving tied **#1** on the **Artificial Analysis Intelligence Index** with **Gemini 3.1 Pro Preview** scoring **57** (up from 51 for GPT-5.2 xhigh). GPT-5.4 features a larger **~1.05M token** context window and higher per-token prices ($2.50/$15 vs $1.75/$14 for GPT-5.2), with strengths in **physics reasoning (CritPt)** and **agentic coding (TerminalBench Hard)** but a higher hallucination rate and **~28% higher benchmark run cost**. The **GPT-5.4 Pro** variant shows a **+10 point jump** on CritPt reaching **30%** but at an extreme output token cost of **$180 / 1M tokens**. Community benchmarks show GPT-5.4 excels in agentic/coding tasks but mixed feedback on reasoning efficiency and literalness compared to **Claude**. OpenAI updated agent prompting guidance for GPT-5.4 API users, emphasizing tool use, structured outputs, and verification loops. **Claude Code** added local scheduled tasks and loop patterns for agents. The **MCP** framework is highlighted as a connective tissue for AI evaluation and design-code round-trips, with **Truesight MCP** enabling AI evaluation like unit testing and **Figma MCP server** supporting bidirectional design-code integration. Open-source **T3 Code** launched as an agent orchestration coding app built on Codex CLI.