Agentic development - September 2026 edition
I sometimes write these summaries to document my thoughts on AI agents — and to have something to look back on (and probably cringe at) in the future. The last update was in May and a few things have changed: I switched to Google Antigravity from GitHub Copilot after receiving a one-year Google AI Pro as compensation for Google changing their Developer Premium program. The frontier models are good, and have gotten a lot better over the last year. Some are probably better than others but they have all been good enough for my tasks. I don’t think I could tell the models apart based on their output. We are moving from AI-assisted pair programming towards agentic development, basically relaxing how much we supervise the agent. The journey to AI Agents I have seen a “maturity” spectrum of AI Agents adoption on the internet: Code completion → Pair programming → Agentic development ...