AVM-Composed vs Hand-Authored Bicep: Cost Across 100 Workloads
By FrootAI Engine Team · CC0-1.0 · Data: Azure Retail Prices API (2026-06-01 snapshot)
Avg. savings
12%
Comparison by Category
USD/month (avg. per workload category)
View data table
| Category | AVM | Hand | Delta |
|---|---|---|---|
| Compute | 4,200 | 4,750 | −12% |
| Database | 3,100 | 3,600 | −14% |
| Network | 890 | 950 | −6% |
| Storage | 1,450 | 1,770 | −18% |
| AI/ML | 5,800 | 5,650 | -3% |
| Containers | 2,100 | 2,400 | −13% |
| Messaging | 340 | 380 | −11% |
| Monitoring | 280 | 310 | −10% |
Key Findings
- 1.AVM compositions averaged 12% lower monthly cost than hand-authored equivalents.
- 2.The primary driver was SKU right-sizing: the Resolver selects the smallest AVM module that satisfies the workload's resource requirements, avoiding the common hand-authored pattern of over-provisioning.
- 3.5 of 100 workloads showed AVM compositions costing MORE (avg. +3%), all in the AI/ML category where hand-authored templates used spot instances not yet supported by AVM modules.
- 4.Storage-heavy workloads showed the largest delta: 18% average savings from ZRS→LRS downgrades where the policy overlay permitted.
Methodology
We selected 100 enterprise workloads from the FrootAI Orchard catalog spanning 8 Azure service categories (compute, databases, networking, storage, AI, containers, messaging, monitoring). For each workload, we generated two Bicep deployments: 1. **AVM-composed**: The V3 Composer resolved AVM modules via the V2 Resolver, wired parameters automatically, and applied the default policy overlay. 2. **Hand-authored**: The original Bicep template from the source GitHub repo, as-is. Both were priced using the Azure Retail Prices API (2026-06-01 snapshot) for the East US region. Monthly cost was computed assuming 730 hours/month for compute resources and actual provisioned capacity for storage/databases.
Reproduce This Study
Run the benchmark yourself. The script, sample data, and expected output are in the repository:
git clone https://github.com/frootai/frootai-core cd frootai-core/scripts/benchmarks/avm-vs-hand-cost bash run.shView script on GitHub
Cite This Study
@misc{frootai2026avmcost,
title={AVM-Composed vs Hand-Authored Bicep: Cost Across 100 Workloads},
author={FrootAI Engine Team},
year={2026},
url={https://frootai.dev/lab/avm-vs-hand-cost}
}FrootAI Engine Team. (2026). AVM-Composed vs Hand-Authored Bicep: Cost Across 100 Workloads. FrootAI Lab. https://frootai.dev/lab/avm-vs-hand-cost
FrootAI Engine Team, "AVM-Composed vs Hand-Authored Bicep: Cost Across 100 Workloads," FrootAI Lab, 2026. [Online]. Available: https://frootai.dev/lab/avm-vs-hand-cost