Cost and Free Tier

On-demand pricing = vCPU cost + memory cost + disk cost + network egress

Cost = instance tier (per hour) + storage per GB/month + backup storage + network

# Set a budget alert
gcloud billing budgets create \
  --billing-account=BILLING_ACCOUNT_ID \
  --display-name="Monthly budget" \
  --budget-amount=100 \
  --threshold-rule=percent=0.8,basis=current-spend \
  --threshold-rule=percent=1.0,basis=current-spend \
  --notifications-rule-pubsub-topic=projects/my-project/topics/budget-alerts

# List billing accounts
gcloud billing accounts list

# Get billing account for a project
gcloud billing projects describe my-project

# Export billing data to BigQuery (set up via Console)
# → Billing > Billing export > BigQuery export

# List VM rightsizing recommendations
gcloud recommender insights list \
  --recommender=google.compute.instance.MachineTypeRecommender \
  --location=us-central1-a \
  --project=my-project

# List idle resource recommendations
gcloud recommender insights list \
  --recommender=google.compute.instance.IdleResourceRecommender \
  --location=us-central1-a \
  --project=my-project

-- Query billing export in BigQuery
SELECT
  service.description AS service,
  SUM(cost) AS total_cost,
  SUM(credits.amount) AS total_credits
FROM `my-project.billing_dataset.gcp_billing_export_v1_XXXXXX_XXXXXX_XXXXXX`
WHERE DATE(_PARTITIONTIME) >= DATE_SUB(CURRENT_DATE(), INTERVAL 30 DAY)
GROUP BY 1
ORDER BY 2 DESC
LIMIT 20;