Codex CLI 0.146: plugin marketplaces, thread forking, web search
Coding agents got quietly stronger this week: remote Code Mode over WebSocket, Claude Code subagents three deep, and Cursor Auto routing by cost tier.
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Marketplaces, forkable threads, remote Code Mode
Codex CLI 0.146 adds third-party plugin marketplaces (Claude Code and Amazon Bedrock manifests included), forkable threads with paginated history, and named or pinned sessions via /new and /clear. Code Mode can now reach remote hosts over WebSocket, and standalone web search works for custom model providers.
Claude Code stacks subagents three deep
Claude Code 2.1.219-2.1.220 makes Claude Opus 5 the default Opus model (1M context; fast mode $10/$50 per Mtok) and lets subagents spawn nested subagents up to depth 3, from 1 before. A new sandbox.network.strictAllowlist blocks non-allowlisted hosts without prompting, and claude -p no longer drops answers on mid-stream API errors.
Elsewhere: Cursor Auto now routes by cost
Cursor's Auto mode is now powered by Cursor Router, letting you bias model selection toward Intelligence, Balance, or Cost, with admin controls to restrict models team-wide. Handy for capping spend on routine edits while reserving frontier models for the hard tasks.