Field notes on AI coding agents — what they cost, where they break, what shipped. Every published figure (prices, percentages, multiples, token counts and durations) as JSON and CSV, each row carrying the sentence it came from.
6 of the 24 write-ups here are tagged AI Costs. Every figure quoted below is in the figures table with the sentence it came from.
A specialized code review agent beat Claude Code on accuracy across 200 real pull requests and 50 open-source repositories while burning about one-ninth the tokens.
Fable 5, the cheapest option at $9.05 per run, delivers only 41.2% accuracy in React projects.
MonkeyCode’s free tier includes 900 million tokens, deploys to your own network with 1 command, and ships as open source you can read.
“Choosing the right GPT-5.6 model for your business is more about avoiding cost overruns than just picking the cheapest option.”
In July 2026, while indie developers building AI coding products full-time watched their API burn rate climb toward their revenue, a quieter shift in the Chinese developer stack showed a different…
Klarna reported $4 million a year in savings and a 99.96 percent conversation engagement rate, the kind of pair of numbers that ends an internal debate before it starts.