Effect CommunityEC
Effect Community•5mo ago•
9 replies
vivi

Error with `generateObject` Using Mixtral Pixtral Large on Bedrock

I'm trying to use Mixtral Pixtral Large via Bedrock using the us.mistral.pixtral-large-2502-v1:0 cross-region inference endpoint. When I try to use generateObject I get this error from bedrock:

{"message":"This model doesn't support the toolConfig.toolChoice.tool field. Remove toolConfig.toolChoice.tool and try again."}


But as far as I can tell, this model does support tool calling - it just doesn't seem to support the toolChoice: { tool } option for giving it a specific tool choice.

The Bedrock docs for SpecificToolChoice say that this is only suported for Claude 3 models which must be an outdated comment because it seems to work for GPT-OSS and Nova models as well.

Is there any way to use generateObject without this specific parameter, and use prompt engineering to require it to call the tool instead?
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