EU Region Model Support and Mapping
EU Region Model Support and Mapping
Section titled “EU Region Model Support and Mapping”Overview
Section titled “Overview”The GenAI-IDP accelerator supports deployment in EU regions with automatic model mapping between US and EU model endpoints. This document outlines the available models, mapping behavior, and fallback mechanisms.
Complete Model Mappings
Section titled “Complete Model Mappings”The following table shows all US to EU model mappings currently configured in the system:
| US Model | EU Model | Notes |
|---|---|---|
us.amazon.nova-lite-v1:0 | eu.amazon.nova-lite-v1:0 | Direct mapping |
us.amazon.nova-pro-v1:0 | eu.amazon.nova-pro-v1:0 | Direct mapping |
us.amazon.nova-premier-v1:0 | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Fallback mapping |
us.amazon.nova-2-lite-v1:0 | eu.amazon.nova-2-lite-v1:0 | Direct mapping |
us.anthropic.claude-3-haiku-20240307-v1:0 | eu.anthropic.claude-3-haiku-20240307-v1:0 | Direct mapping |
us.anthropic.claude-3-5-haiku-20241022-v1:0 | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Fallback mapping |
us.anthropic.claude-haiku-4-5-20251001-v1:0 | eu.anthropic.claude-haiku-4-5-20251001-v1:0 | Direct mapping |
us.anthropic.claude-3-5-sonnet-20241022-v2:0 | eu.anthropic.claude-3-5-sonnet-20241022-v2:0 | Direct mapping |
us.anthropic.claude-3-7-sonnet-20250219-v1:0 | eu.anthropic.claude-3-7-sonnet-20250219-v1:0 | Direct mapping |
us.anthropic.claude-sonnet-4-20250514-v1:0 | eu.anthropic.claude-sonnet-4-20250514-v1:0 | Direct mapping |
us.anthropic.claude-sonnet-4-20250514-v1:0:1m | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Fallback mapping |
us.anthropic.claude-sonnet-4-5-20250929-v1:0 | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Direct mapping |
us.anthropic.claude-sonnet-4-5-20250929-v1:0:1m | eu.anthropic.claude-sonnet-4-5-20250929-v1:0:1m | Direct mapping |
us.anthropic.claude-sonnet-4-6 | eu.anthropic.claude-sonnet-4-6 | Direct mapping |
us.anthropic.claude-sonnet-4-6:1m | eu.anthropic.claude-sonnet-4-6:1m | Direct mapping |
us.anthropic.claude-opus-4-20250514-v1:0 | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Fallback mapping |
us.anthropic.claude-opus-4-1-20250805-v1:0 | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Fallback mapping |
us.anthropic.claude-opus-4-5-20251101-v1:0 | eu.anthropic.claude-opus-4-5-20251101-v1:0 | Direct mapping |
us.anthropic.claude-opus-4-6-v1 | eu.anthropic.claude-opus-4-6-v1 | Direct mapping |
us.anthropic.claude-opus-4-6-v1:1m | eu.anthropic.claude-opus-4-6-v1:1m | Direct mapping |
us.meta.llama4-maverick-17b-instruct-v1:0 | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Fallback mapping |
us.meta.llama4-scout-17b-instruct-v1:0 | eu.anthropic.claude-sonnet-4-5-20250929-v1:0 | Fallback mapping |
Mapping Types
Section titled “Mapping Types”- Direct Mapping: US model has exact EU equivalent
- Fallback Mapping: US model not available in EU, mapped to best available EU alternative
Available EU Models
Section titled “Available EU Models”Based on the mappings above, the following EU models are supported:
Amazon Nova Models
Section titled “Amazon Nova Models”eu.amazon.nova-lite-v1:0eu.amazon.nova-pro-v1:0
Anthropic Claude Models
Section titled “Anthropic Claude Models”eu.anthropic.claude-3-haiku-20240307-v1:0eu.anthropic.claude-haiku-4-5-20251001-v1:0eu.anthropic.claude-3-5-sonnet-20241022-v2:0eu.anthropic.claude-3-7-sonnet-20250219-v1:0eu.anthropic.claude-sonnet-4-20250514-v1:0eu.anthropic.claude-sonnet-4-5-20250929-v1:0eu.anthropic.claude-sonnet-4-5-20250929-v1:0:1m
Model Mapping Behavior
Section titled “Model Mapping Behavior”Automatic Region Detection
Section titled “Automatic Region Detection”The system automatically detects the deployment region and applies appropriate model mappings:
- EU Regions: Any region starting with
eu-(e.g.,eu-west-1,eu-central-1) - US Regions: Any region starting with
us-(e.g.,us-east-1,us-west-2)
Mapping Logic
Section titled “Mapping Logic”- US to EU Mapping: When deployed in EU regions, US model IDs are automatically mapped to their EU equivalents
- EU to US Mapping: When deployed in US regions, EU model IDs are mapped back to US equivalents
- Fallback Behavior: If no mapping exists, the original model ID is returned unchanged
Configuration Processing
Section titled “Configuration Processing”The UpdateConfiguration lambda processes default configurations as follows:
- Model ID Detection: Identifies strings containing
us.oreu.prefixes - Region-Based Swapping: Swaps model IDs based on deployment region
- Logging: Logs all model swaps for debugging purposes
Important Limitations
Section titled “Important Limitations”Fallback Mappings
Section titled “Fallback Mappings”⚠️ Critical: Some US models are not directly available in EU regions and use fallback mappings:
- Nova Premier:
us.amazon.nova-premier-v1:0→eu.anthropic.claude-sonnet-4-5-20250929-v1:0 - Claude 3.5 Haiku:
us.anthropic.claude-3-5-haiku-20241022-v1:0→eu.anthropic.claude-sonnet-4-5-20250929-v1:0 - Claude Opus Models: Both Opus variants →
eu.anthropic.claude-sonnet-4-5-20250929-v1:0
Implications of Fallback Mappings
Section titled “Implications of Fallback Mappings”- Performance Changes: Fallback models may have different speed/cost characteristics
- Behavior Differences: Different models may produce varying outputs for the same input
- Cost Impact: Fallback models may have different pricing structures
Third-Party Models (US-Only)
Section titled “Third-Party Models (US-Only)”The following third-party models are available in US regions only and have no EU cross-region inference profiles. In EU deployments, the Meta Llama 4 models fall back to Claude Sonnet 4.5, while the single-region models (Gemma, Nemotron) are not available and should not be selected:
- Meta Llama 4 Maverick 17B:
us.meta.llama4-maverick-17b-instruct-v1:0→eu.anthropic.claude-sonnet-4-5-20250929-v1:0(fallback) - Meta Llama 4 Scout 17B:
us.meta.llama4-scout-17b-instruct-v1:0→eu.anthropic.claude-sonnet-4-5-20250929-v1:0(fallback) - Google Gemma 3 27B IT:
google.gemma-3-27b-it— single-region only, no EU availability - NVIDIA Nemotron Nano 12B v2:
nvidia.nemotron-nano-12b-v2— single-region only, no EU availability - Qwen3 VL 235B A22B:
qwen.qwen3-vl-235b-a22b— single-region only, no EU availability
Missing Direct EU Equivalents
Section titled “Missing Direct EU Equivalents”The following US models do not have direct EU equivalents:
- Nova Premier
- Claude 3.5 Haiku (specific version)
- Claude Opus 4 variants
- Meta Llama 4 Maverick/Scout (US cross-region only)
- Google Gemma 3, NVIDIA Nemotron, Qwen (single-region US only)
Best Practices
Section titled “Best Practices”For EU Deployments
Section titled “For EU Deployments”- Verify Model Availability: Ensure all configured models have EU mappings before deployment
- Test Thoroughly: Test document processing with actual EU model endpoints
- Monitor Logs: Check UpdateConfiguration lambda logs for model swap confirmations
Recommended EU Models
Section titled “Recommended EU Models”- Fastest:
eu.amazon.nova-lite-v1:0 - Balanced:
eu.amazon.nova-pro-v1:0 - Best Quality:
eu.anthropic.claude-sonnet-4-5-20250929-v1:0
Troubleshooting
Section titled “Troubleshooting”Common Issues
Section titled “Common Issues”- Model Not Found Errors: Check if the model has an EU mapping
- Access Denied: Verify Bedrock model access is enabled for EU models
- Unexpected US Model Usage: Check logs for missing mappings
Region Availability
Section titled “Region Availability”This feature supports all AWS regions but is specifically designed for:
- EU Regions:
eu-west-1,eu-central-1,eu-north-1, etc. - US Regions:
us-east-1,us-west-2, etc.
Other regions (Asia-Pacific, etc.) will use the original model IDs without mapping.