# Real OpenAI and Anthropic models: failover in the middle of a tool loop

trail: [openai: ok, openai: failed with status 503, anthropic: ok]
answered by anthropic; tool executions 1; requests: openai 2, anthropic 1

request 1 to OpenAI: model=gpt-6.1-sol, max_tokens=256, tools=[refund_order]
request to Anthropic: model=claude-sonnet-5-5 max_tokens=256
  conversation it received: [assistant:tool_use(id=call_1, name=refund_order), user:tool_result(tool_use_id=call_1)]