Codex at $1 a task, Claude Code at $14 — AI News Oct 2

- Artificial Analysis October State of Intelligence report: Codex with GPT-6.1 Sol (xhigh) scores 0.629 at about $1.04 per task vs Claude Code with Sonnet 5.5 (max) at 0.684 for about $14.19; best price-performance pick and why the harness matters more than the model name. - JetBrains Air: parallel coding-agent sessions inside the IDE — worktrees, per-session cost tracking, built-in debugging and profiling skills, Junie Lite free tier. - Security wake-up: Z.ai disables its coding assistant after unauthorized repo uploads to overseas servers; Google open-sources EnvHarness and ships the ADK for Kotlin; OpenAI shuts down the Assistants API. - Agoda AI developer report: 53% of Southeast Asia and India developers run agents in production, cost is the top adoption barrier; Ivo open-sources Ivo Sage, a legal model for long-horizon contract work. - Industry money: Anthropic IPO push toward a $2T valuation with $518B in infra commitments vs OpenAI's $30B private raise. Follow AI Engineering Briefing and leave a rating — it's how new listeners find the show.