Bedrock and a hard place: Claude adventure leaves AWS user staring down $30K invoice

The world of AI is exciting, but there are plenty of expensive pitfalls ready to catch out the unwary, as one Register reader found when taking Anthropic's Claude Opus for a spin courtesy of Amazon Bedrock. Our reader managed to run up Bedrock charges totaling $30,141.33 in April 2026, despite using AWS Cost Anomaly Detection (CAD) to avoid any nasty surprises. Thirty-three days before our reader's first use of Bedrock, the threshold in CAD was set to "Absolute ≥ $100 AND Relative ≥ 40%" so aler