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Suboptimal Bedrock Custom Model
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Suboptimal Bedrock Custom Model
CER:
AWS-AI-1382
Service Category
AI
Cloud Provider
AWS
Service Name
AWS Bedrock
Inefficiency Type
Outdated or Overpowered Model Configuration
Explanation

Teams often start custom-model deployments with large architectures, full-precision weights, or older model versions carried over from training environments. When these models transition to Bedrock’s managed inference environment, the compute footprint (especially GPU class) becomes a major cost driver. Common inefficiencies include: * Deploying outdated custom models despite newer, more efficient variants being available, * Running full-size models for tasks that could be served by distilled or quantized versions, * Using accelerators overpowered for the workload’s latency requirements, or * Relying on default model artifacts instead of optimizing for inference. Because Bedrock Custom Models bill continuously for the backing compute, even small inefficiencies in model design or versioning translate into substantial ongoing cost.

Relevant Billing Model

Bedrock Custom Models incur hourly charges for the underlying dedicated compute (e.g., GPU accelerator instance types). Model size, architecture, and precision level directly influence resource requirements. Using an unnecessarily large or outdated model increases hourly cost without improving output.

Detection
  • Identify custom models deployed using older or unoptimized architectures
  • Review GPU or compute class selected for the endpoint relative to actual latency needs
  • Assess whether distilled, quantized, or smaller model variants could deliver similar output quality
  • Evaluate model performance to determine whether compute utilization is consistently low
  • Check whether model version governance practices exist for custom inference workloads
Remediation
  • Upgrade to newer, more efficient versions of custom models when available
  • Use model distillation, pruning, or quantization to reduce compute requirements
  • Select smaller architectures for workloads with light or predictable inference needs
  • Right-size the underlying accelerator class to match actual latency and throughput requirements
  • Establish periodic model review processes so custom model endpoints remain optimized over time
Relevant Documentation
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