AI Gateway: Bedrock Application Inference Profile ARN fails via /compat/chat/completions

[anthod0]

A Bedrock Application Inference Profile ARN works via AI Gateway's Bedrock native endpoint, but fails via /compat/chat/completions.

Works

curl -X POST \
   "https://gateway.ai.cloudflare.com/v1/<CF_ACCOUNT_ID>/<GATEWAY_ID>/aws-bedrock/bedrock-runtime/us-east-2/model/arn%3Aaws%3Abedrock%3Aus-east-2%3A<AWS_ACCOUNT_ID>%3Aapplication-inference-profile%2F<PROFILE_ID>/invoke" \
    -H "cf-aig-authorization: Bearer <CF_API_TOKEN>" \
    -H "Content-Type: application/json" \
    -d '{
      "anthropic_version": "bedrock-2023-05-31",
      "max_tokens": 1024,
      "messages": [{
        "role": "user",
        "content": [{ "type": "text", "text": "Reply only OK" }]
      }]
}'

Response:

{
    "model": "claude-sonnet-...",
    "type": "message",
    "role": "assistant",
    "content": [{ "type": "text", "text": "OK" }],
    "stop_reason": "end_turn",
    "usage": { "input_tokens": 13, "output_tokens": 4 }
}

Fails: raw ARN

curl -X POST \
    "https://gateway.ai.cloudflare.com/v1/<CF_ACCOUNT_ID>/<GATEWAY_ID>/compat/chat/completions" \
    -H "cf-aig-authorization: Bearer <CF_API_TOKEN>" \
    -H "Content-Type: application/json" \
    -d '{
      "model": "aws-bedrock/arn:aws:bedrock:us-east-2:<AWS_ACCOUNT_ID>:application-inference-profile/<PROFILE_ID>",
      "messages": [{ "role": "user", "content": "Reply only OK" }],
      "max_tokens": 16
}'

Fails: URL-encoded ARN

{
    "model": "aws-bedrock/arn%3Aaws%3Abedrock%3Aus-east-2%3A<AWS_ACCOUNT_ID>%3Aapplication-inference-profile%2F<PROFILE_ID>",
    "messages": [{ "role": "user", "content": "Reply only OK" }],
    "max_tokens": 16
}

Also tried:

aws-bedrock/application-inference-profile/<PROFILE_ID>
aws-bedrock/<PROFILE_ID>
aws-bedrock/us-east-2/arn:aws:bedrock:us-east-2:<AWS_ACCOUNT_ID>:application-inference-profile/<PROFILE_ID>

Question: is Bedrock Application Inference Profile ARN supported through /compat/chat/completions? If yes, what is the correct model format?