Originally published on rohitraj.tech
Week 24 of 2026 in AI dev tools: OpenAI's Codex graduates from coding agent to app builder with Sites and role plugins, three open-weight models drop in 72 hours (MiniMax M3, Gemma 4 12B, NVIDIA Nemotron 3 Ultra), Anthropic moves the Agent SDK to metered billing on June 15, Microsoft Build hardens agent security, and the Gemini CLI consumer sunset hits June 18.
Read the full version with code samples, diagrams, and architecture details: This Week in AI Dev: Codex Builds Apps, the Open-Weight Frontier Explodes, and Anthropic Meters the Agent SDK (Week 24 of 2026)
More engineering notes: rohitraj.tech/en/notes
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