cloudcostdb
LiveAWS pricing, made browsable.
Compare EC2, RDS, storage, networking and Bedrock model pricing across every AWS region. No sign-up, no spreadsheets. Built as a static site on AWS's public pricing data.
m7g in us-east-1.AOTC Labs · Ahead of the Curve
Open tools for understanding cloud cost.
An independent lab building free tools for FinOps and cloud engineers. Pricing data you can actually browse, and test data you can actually trust.
Projects
Two tools so far, both about making AWS cost easier to see and test.
CURGen
Coming soonSynthetic AWS Cost and Usage Reports, with ground truth.
Simulates infrastructure being created, scaled and torn down, then emits the CUR that would result. Every run also records which change caused which cost delta, so you can test anomaly detection and cost tooling against a known answer.
$ uv run curgen run --scenario=scenarios/teaching/cost_change_detection.yaml --output=./output
[CURGen] Scenario: Cost Change Detection Teaching Scenario
[CURGen] Seed: 42 (deterministic mode)
[CURGen] Duration: 72 hours
[CURGen] Scripted events: 5
[CURGen] Simulation complete!
[CURGen] Total resources created: 15
[CURGen] Scripted events: 5 scheduled, 5 executed, 0 matched no resources, 0 refused on a selected resource
[CURGen] Pricing fallbacks: 0
$ jq -c 'select(.event_type == "hourly_checkpoint" and .hour > 1
and .cost_delta_from_previous_hour != 0)
| {hour, delta: (.cost_delta_from_previous_hour * 1000 | round / 1000)}' \
output/*/ground_truth/*.jsonl
{"hour":13,"delta":0.48}
{"hour":24,"delta":-0.052}
{"hour":36,"delta":-0.192}How the lab works
Real data, shown plainly.
Numbers come from AWS's own pricing feeds and billing formats, not marketing pages.
Built to be checked.
Deterministic output, stated sources, tests. If a number looks wrong, you can trace it.
Free and open.
Built in public as side projects, for the FinOps community. No accounts, no paywalls.