Could you invoke more than 2 runnables at once?

[seanpark98]

I remember something like the following was possible previously, where I created multiple prompt chains and combined them into a SequentialChain. It used input_variables, output_keys, and output_variables to pass information between the chains:

prompt1 = PromptTemplate(
    input_variables=['review'],
    template="다음 사용자 리뷰를 한글로 번역하세요.\n\n{review}"
)
chain1 = LLMChain(llm=llm, prompt=prompt1, output_key="translation")

prompt2 = PromptTemplate.from_template(
    "다음 리뷰를 한 문장으로 요약하세요.\n\n{translation}"
)
chain2 = LLMChain(llm=llm, prompt=prompt2, output_key="summary")

prompt3 = PromptTemplate.from_template(
    "다음 리뷰를 읽고 0점부터 10점 사이에서 부정/긍정 점수를 매기세요. 숫자만 대답하세요.\n\n{translation}"
)
chain3 = LLMChain(llm=llm, prompt=prompt3, output_key="sentiment_score")

prompt4 = PromptTemplate.from_template(
    "다음 리뷰에 사용된 언어가 무엇인가요? 언어 이름만 답하세요.\n\n{review}"
)
chain4 = LLMChain(llm=llm, prompt=prompt4, output_key="language")

prompt5 = PromptTemplate.from_template(
    "다음 리뷰 요약에 대해 공손한 답변을 작성하세요.\n답변 언어:{language}\n리뷰 요약:{summary}"
)
chain5 = LLMChain(llm=llm, prompt=prompt5, output_key="reply")

all_chain = SequentialChain(
    chains=[chain1, chain2, chain3, chain4, chain5],
    input_variables=['review'],
    output_variables=['translation','summary','sentiment_score','language','reply'],
)

Has this become impossible using the new LELC? I've been stuck trying to achieve the same thing, but I can't find a way to implement a similar functionality like above.

[eyurtsev]

Take a look at RunnableParallel (https://python.langchain.com/v0.2/api_reference/core/runnables/langchain_core.runnables.base.RunnableParallel.html)