February 2025
Intermediate
376 pages
9h 25m
Japanese
Content preview from 仕組みからわかる大規模言語モデル 生成AI時代のソフトウェア開発入門
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言語モデルAPIごとの使い方
4.3
本節では、OpenAI API、Gemini API、Anthropic APIといった主要な言語モデルAPI に
ついて、その使い方の共通点と違いを説明します。これらのAPI を適切に利用することで、
特定の言語モデルに依存しないシステムを開発することができます。
全てのAPI に共通する点は次のとおりです。
モデル名を指定する
メッセージリストを渡す
APIキーを環境変数から読み出す
複数のモダリティ（形式）を入力可能
temperature、top-p、最大トークン数、ストップシーケンスといったパラメータを指定
可能
ただし、これらのパラメータの名前や渡し方には、API間で差異があります。以降、本節で
は各APIについてテキストのみの会話と画像を含むマルチモーダルな会話の二つの例を示し
ながら、その特徴を解説します。
4.3.1
OpenAI API
OpenAI API は、OpenAI が提供するAPI です。OpenAI APIを用いることで、OpenAIが
開発したモデルにアクセスすることができます。OpenAI APIを使用するには事前にAPIキー
を取得し、環境変数に設定することが必要です。必要なパッケージのインストールについては
巻末のAppendix を参考にしてください。
会話
リスト 4.3.1 は、OpenAI API を使用してテキストのみの会話を行う例です。このプログラ
ムを用いてOpenAI API の使い方を示します。
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リスト4.3.1 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.