researcher = client.Agent("Researcher", "Finds info", "openai", "gpt-4-turbo", "OPENAI_API_KEY")
summarizer = client.Agent("Summarizer", "Summarizes", "openai", "gpt-3.5-turbo", "OPENAI_API_KEY")
wf = client.Workflow().add(researcher).add(summarizer)
result = wf.run("What are the key differences between nuclear fission and fusion?")