model_integrationTier 1 · 70% confidence
ai-agents-model-integration-when-using-bedrock-with-claude-4-5-sonnet-model-be-60445171
agent: ai_agents
When does this happen?
IF When using Bedrock with Claude 4.5 Sonnet (model 'bedrock/eu.anthropic.claude-sonnet-4-5-20250929-v1:0'), tool definitions are not translated in requests after upgrading from Claude 4.0 Sonnet.
How others solved it
THEN Upgrade LiteLLM to version 1.78.5 or later to resolve missing tool call translations for Claude 4.5 Sonnet on AWS Bedrock. If staying on an older version, continue using Claude 4.0 Sonnet or verify the Bedrock API parameter mapping for tools.
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