Timeline
Open-source plugin 'dont-let-me' released for Claude Code, Codex, and OpenCode
Claude Code now ships with Plan mode as a first-class safety rail for cross-file refactors
Claude Code skills feature introduced, allowing reusable instruction packs in ~/.claude/skills/
Plan mode and CLAUDE.md/skills introduced for Claude Code
Claude Code's Plan mode introduced as a safety rail for cross-
Claude Code adds iOS Simulator support for building and testing iOS apps from the terminal
Codex computer-use feature demonstrated autonomously installing Blender and generating 3D animation
OpenAI Codex reached 5 million weekly users
Weekly active users grew from 2M to 3M in under a month, a 50% increase
OpenAI Codex agent launched as an autonomous coding tool
Ecosystem
Claude Code
OpenAI Codex
Benchmarks
Evidence (12 articles)
Nimbalyst Open-Sources Graph-Based IDE to Fix Agent Context Fragmentation
Jul 23, 2026Open-source project turns Claude Code, Codex into CAD engineer
Jul 27, 2026Stop Sabotaging Your Ship: Install the 'Don't Let Me' Mentor Plugin for
Jul 28, 2026Almanac: Open-Source Wiki Auto-Updates From Claude Code Chats
May 14, 2026Snapdragon X2 Elite Beats Intel Arrow Lake for AI Coding Agents
May 11, 2026Opus+Codex Crossover Point: Use Pure Opus Below 500 Lines, Switch Above 800
Apr 6, 2026Why Claude Code's 80.8% SWE-Bench Score and 1M Context Window Beat Codex
Jul 12, 2026k-dense Ships 150 Open-Source Scientific Agent Skills
Jul 26, 2026+ 4 more articles