from ironaai import ironaaiclient = ironaai.Client(# Optional - automatically loads from environment variableapi_key='your_ironaai_api_key')chat_completions = irona.completions.create(messages=[{"role":"system","content":"You are a helpful assistant."},{"role":"user","content":"Explain the golden ratio."}],models=['openai/gpt-4o','anthropic/claude-3-5-sonnet-20240620'])print('LLM output:', chat_completions.content)print('Selected providers:', chat_completions.providers)