QCon London: Thoughtworks Reports AI Coding Agents Now Cost $91K/Year — 'Dangerous State' Where Capability Outpaces Safety

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At QCon London, Thoughtworks AI-Coding lead Birgitta Böckeler reported coding agent costs have surged from $0.12 per 100 lines in 2024 to approximately $380/day ($91,200 annualized — 'a solid developer salary in Germany'). She warned of a 'dangerous state where AI is so useful that you want to use it, but you cannot and maybe never will be able to give it everything,' citing prompt injection, malware generation, and secret extraction as unsolved risks. The talk marks the industry shift from 'vibe coding' to autonomous agent swarms as the dominant paradigm.