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17 CarbonBench carbonbench-series /writing/carbonbench-series article CarbonBench Systems 0 Five essays on the hidden carbon cost of agent infrastructure. Compute carbon varies 10x by region. Renewable availability shifts hourly. Scope 3 dominates oper 2026-04-26 2026-11-07 23:04:31.552688+00:00 0   Five essays on the hidden carbon cost of agent infrastructure. Compute carbon varies 10x by region. Renewable availability shifts hourly. Scope 3 dominates operational emissions. Temporal and geographic arbitrage changes the economics. Most model operators are not pricing any of this yet. The tool behind them is written up as a [project](/projects/carbonbench). It is offline now; the essays stand on its April 2026 data. 1. **[The Same Model Costs 10x More Carbon in Virginia Than the Netherlands](/writing/carbonbench)** The core finding: identical inference, wildly different carbon. What the data shows across 85 models, 6 providers, 9 regions. 2. **[Scaling in the Wrong Direction](/writing/carbonbench-scaling-wrong-direction)** LeCun's architecture argument meets carbon data. What happens when a more efficient architecture runs on a clean grid. 3. **[Grid Arbitrage: Why Region Choice Matters More Than Model Choice](/writing/carbonbench-grid-arbitrage)** A bigger model on a clean grid beats a smaller model on a dirty grid. The free optimization nobody does. 4. **[The 24-Hour Carbon Curve](/writing/carbonbench-time-of-day)** Wind at 3am, gas at 6pm. Scheduling batch inference for the cleanest hours costs nothing. 5. **[Scope 3 and the API Call You Can't See](/writing/carbonbench-scope3)** Every inference call is a scope 3 emission. The cloud abstraction hides the carbon. Regulation is catching up.
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