2026の5のベスト ChatGPT 代替品

ChatGPT は AIチャットボット界で最も有名な名前ですが、それだけではありません。そして、何をしようとしているかによっては、それがあなたにとって最良の選択肢でないかもしれません。

ChatGPT is a great general-purpose chatbot, but like most jacks-of-all-trades, it can lose out to more specific tools for certain jobs. So if you need something that better suits your needs, your workflows, or even your personality, there are plenty of ChatGPT alternatives to consider.

私はChatGPTが登場して以来、ずっと使い、それについて書いてきましたし、過去10年間は AIの発展 について書いてきました。今の私の仕事は、AIが何に優れているのか、そしてどこで不足しているのかを見極めることです。つまり、私はChatGPTの代替品をたくさんテストしてきたということです。では、本題に入りましょう。

ChatGPTの代替として優秀なツール

• プロフェッショナルのためのClaude

• GoogleインテグレーションのためのGoogle Gemini

• 統合エクスペリエンスのための Microsoft Copilot

• Zapier for automation

• ウェブ検索の困惑

ChatGPT の代替として最適なものは何ですか?

ChatGPT が優れているのは、実際に便利で使いやすいことです。ChatGPT を使用する場合、質問に正しく（または少なくともほぼ正しく）答えてもらうために、奇妙な方法で質問を構成したり、特定のキーワードを詰め込んだりする必要はありません。他の人と同じように話しかけるだけです。確かに、明確であればあるほど良い結果が得られるが、それは人にも当てはまる。 

チャットボットが ChatGPT の正当な代替となるためには、このチャットボットの魔法を取り入れる必要があります。使い方は簡単かつシームレスである必要があり、質問の内容を Google が理解していると確信しながら、気軽にチャットできる必要があります。 

Over the past year or so, chatbots have generally become more similar. My top picks can all search the web, work with documents and images, and have some kind of reasoning model for tackling harder problems. If they don't have these features, they really have to stand out in some other way.

したがって、ChatGPT の優れた代替となるには、アプリは次の要件を満たす必要があります。

• Do something better than ChatGPT. ChatGPT is still the best general-purpose chatbot, so to make this list, an AI chatbot had to be the best at something else specific. A lot of chatbots feel like tech demos for the underlying models rather than usable standalone apps.

• Be easy to use. AI tools are still rapidly developing. Some of the most exciting ones require you to run your own AI models, either locally or on a cloud computing platform. While this gives you a lot of options, it's a lot harder than signing up for ChatGPT. To make this list, an app needs to be as easy as signing up and starting to chat. Some have more customization options or a steeper learning curve, but none of them require technical expertise to use.

• 確実に仕事ができる。私がテストした AI ツールの中には、常にオフラインになったり、エラーが発生したりしているものがあります。このリストを作成するには、必要なときに頼りにできるよう、チャットボットが確実に機能する必要があった。 

• Stay up-to-date. Six months is a long time in AI right now. Unless these chatbots are getting updated every couple of months, they quickly fall behind.

Over the past few months, I've tested all these apps extensively—and then tested them again when they updated the next week—and the Zapier team has also spent hundreds, if not thousands, of collective hours in them. 

I'll continue to test these apps because they keep getting better and adding new features. But fair warning: this means that some details of this list will be out of date the second we hit publish. But I still stand over all these picks being great at what they do—and if the model numbers go up a digit or a new feature gets added, I'm confident the apps will only be better. 

ChatGPTの代替となるベストソリューションを一目で

プロフェッショナルのための最高のChatGPT代替品

Claude

Claudeの長所:

• プロフェッショナルでパワフル

• 普通の古い使いやすい

• あらゆるレベルの技術能力に対応したフルスタックの生産性向上ツール

クロードの短所:

• There's a focus on code and automation features over other things like image generation (maybe not a con for everyone, though)

クロードには 多くの魅力があります。まず、多くの人はデフォルトの文体がChatGPTよりも自然に感じると言うでしょう。そしてそれはトーンや言葉選びを超えて、ChatGPTよりも共感的に反応する傾向があります(不気味の谷の良い面も悪い面も)。

Anthropic, the maker of Claude, is also known for its commitment to "helpful, harmless, and honest" AI, and it has carefully designed Claude's safety guardrails to help maintain that. The AI is instructed to respond in ways that wouldn't offend a child, as well as dozens of other similar instructions to steer it toward good answers—and when it fails, to stay away from harmful or offensive ones. While it can be hard to demonstrate this in practical terms, it's worth pointing out that Claude hasn't made as many headlines as ChatGPT.

もちろん、このリストにあるすべてのアプリ（ChatGPT を含む）は、可能な限り安全になるよう設計されていますが、Anthropic は他のアプリよりも少し真剣に取り組んでいます。

Claude には、ChatGPT と同様の機能が多数あります。たとえば、プロジェクトを使用すると、Claude がそのプロジェクトに関するチャットで使用するプロジェクト知識を追加できます。クロード氏はまた、チャットボット内で実行される小さなアプリをコーディングできるようにする取り組みを先導しました。クロード氏はそれを「アーティファクト」と呼んでいます。そして、Anthropic は、 Claude のような AI アプリが他のソフトウェアと通信し やすくするプロトコルである Model Context Protocol (MCP) の考案者でもあります。

Claude is also known for its coding abilities: Claude Code is one of the most competent AI coding tools, and the latest Claude models are some of the best at coding. If you're less technical, Claude Cowork is an agentic AI feature, layered on top of the Claude chatbot interface, that can take actions for you in designated files and apps. These are fairly groundbreaking features that OpenAI is trying to catch up with.

Combined, this all makes Claude a great choice for professionals. With its focus on coding, automation, and safety, it just feels a touch more serious than ChatGPT. Plus, Claude also integrates with Zapier, so you can connect it to thousands of other apps and automate your AI-powered workflows. Learn more about how to automate Claude, or learn how you can take action in thousands of apps straight from Claude using Zapier MCP.

クロードの価格設定: Free; Claude Proは月額17ドル(年単位で請求)です。

続きを読む： クロード vs. ChatGPT

Googleサービスとのインテグレーションに最適なChatGPTの代替品

Google Gemini

双子座の長所:

• Google Geminiのモデルは、現在入手可能なモデルの中で最高のものの一つである。

• Googleのアプリと統合

双子座の短所:

• 洗練性と機能が欠けている

• 奇妙なバグがある

Google Geminiには、1 つの大きな特徴、Googleが開発したという点があります。

GeminiはGoogleの他の製品としっかりインテグレーションしています。GoogleドキュメントやGmailとの ワンクリック インテグレーション があり、Gmail、Googleドライブ、ホテル、フライト、地図、YouTubeなど他のGoogleアプリからも情報を取得することができます。ChatGPTでもこれを回避する方法はありますが、Geminiの方がずっと簡単です。Personal Intelligence機能は、他のGoogleアプリからも文脈を積極的に引き出します。

本当に、Googleのアプリに住んでいるなら、こうした機能を無視するのは難しいでしょう。さらに、GeminiはChromeとAndroidに直接組み込まれているので、ほぼどこにでも存在します。

ChatGPT still takes the win on a few aspects: its data analysis and reasoning features are a lot more advanced, and it's also much more customizable. But if Google apps are where you live and work, Gemini is your best bet for an alternative to ChatGPT. It's also home to some of the best AI image generation models, including Nano Banana Pro, and it lets you create videos too, which ChatGPT no longer does.

With Zapier's Google AI Studio integrations, you can also access the model behind Gemini from all the apps you use at work. Learn more about how to automate Google AI Studio.

ジェミニの価格設定: 無料;Google AI Plusは$7です。99/月(最初の数ヶ月間は割引が提供されることが多いです)

続きを読む： Gemini vs. ChatGPT

統合されたエクスペリエンスを実現するChatGPTの最良の代替品

マイクロソフト コパイロット

Microsoft Copilot の長所:

• Shares models with ChatGPT and Claude

• Microsoftのアプリ間のインテグレーション

Microsoft Copilot の短所:

• ChatGPTの機能に遅れをとっている

Microsoft is an investor in OpenAI and Anthropic, so it makes sense that Copilot is powered by the same models as ChatGPT and Claude. (ChatGPT's web search feature is also powered by Bing.) But the experience of using each one has a different vibe.

The main difference here is that Copilot (formerly Bing Chat) is built into Microsoft Edge and whatever the Office apps like Word and Excel are called today. If you use Microsoft's products, this makes for a more integrated experience. ChatGPT and Claude just don't integrate as cohesively with any other tool—though its desktop app is still very good. 

Copilot is at its best in Microsoft Edge. It's integrated into the sidebar and includes extra features that you can use while you're browsing the web—for example, you can ask it questions about the page you're currently on.

ChatGPT が Copilot でできることができないわけではありません。ただ、コンテキストの切り替えがはるかに多く必要になるだけです。

コパイロットの料金: Free; $9.99/月から、Microsoft 365で

続きを読む： Copilot 対 ChatGPT

The best ChatGPT alternative for automation

Zapier

Zapier の長所:

• Includes agents and chatbots, along with deterministic automation

• AI Guardrails for compliance and safety

• Integrates with 9,000+ apps

Zapier の欠点:

• Not an out-of-the-box chatbot like ChatGPT

Zapier combines AI agents and chatbots into a single automation-first platform that actually does the work for you.

Let's start with Zapier Agents. Zapier was ahead of the game, offering agents years before ChatGPT launched workspace agents (which is still in a research preview). On Zapier, anyone across your organization can create custom AI agents in minutes just by describing what they want in plain language. Agents work proactively, monitoring for triggers and taking action automatically in the background.

Think of them as mini teammates. You can train them by chatting, showing them exactly how to behave, and then let them run. For example, when a new lead comes in through Facebook Lead Ads, an agent can automatically summarize the data and notify your sales team—no manual prompting required. These workflows repeat continuously, so tasks get handled even when you're offline. Agents can also tap into your tools and data. Connect sources like HubSpot, Zendesk, Notion, or thousands of other apps, and your agents can read, analyze, and act on that information. You can build specialized agents for every function—lead qualification, ticket routing, content drafting, inbox management, project tracking, and more—all in one place.

Zapier also includes AI Guardrails, which add a governance layer by scanning outputs for PII, prompt injection, toxicity, and sentiment issues before anything moves forward—something ChatGPT alone doesn't handle natively in workflows.

On the chatbot side, Zapier Chatbots lets you build your own custom AI chatbot—similar to ChatGPT's GPT builder, but designed for automation from the start, and shareable on your website. You can train your chatbot on your website, help docs, or internal data, customize its tone and branding, and embed it wherever you want it, internally or externally. And because everything is centered on automation, your chatbot doesn't stop at answering questions. It can collect and qualify leads, then automatically trigger follow-ups, update your CRM, or notify your team. It turns conversations into complete workflows, making it ideal for customer support, lead generation, and sales.

This is the Zapier blog, so I encourage you to take Zapier for a spin yourself. You can also take a look at how some of our customers have used Zapier's AI tools to automate work across their entire organization.

Zapier pricing: Free plan available; paid plans from $50/month ($33.33/month billed annually) for Agents and $20/month ($13.33/month billed annually) for Chatbots.

ウェブ検索に最適なChatGPTの代替

当惑

Perplexityの長所:

• 検索とリサーチ機能は最高です

Perplexityの短所:

• 一般的なタスクでは、ChatGPTよりも使いにくいです

Perplexity は技術的にはChatGPTの代替手段ですが、 従来の検索エンジンの代替として宣伝されています。これは典型的な会話型AIチャットボットに少し似ていますが、より正確で最新のものを目指して設計されており、 GoogleのAI概要に似ていますが、悪評はあまりありません。

Perplexity will typically give you more sources than ChatGPT, and it even gives you control over which sources it uses. For example, you can direct it to search the entire internet, just academic papers, or social sites like Reddit, depending on what you think makes the most sense for your query. Similarly, it lets you choose which AI model to use, including the latest GPT, Gemini, and Claude models, as well as Perplexity's own Sonar model.

Perplexity is also pushing hard into automation. Its Comet browser and Computer features both allow AI agents to take real actions on the web or your computer. They're basically a more powerful version of ChatGPT's computer use, though they're still finicky to get the most from.

If you primarily want an AI chatbot to help with deep dives on complicated topics, Perplexity is a great option. It can still do all the things you expect of ChatGPT, like answer questions and write emails, but it's best as a research tool. If you want the automation features, it's worth a look too.

また、 PerplexityはZapierと連携しているため、AI研究の力を他のすべてのビジネスツールに自動的に取り入れることができます。Perplexityの自動化方法や、既成テンプレートから始められる方法について詳しく学びましょう。

Perplexity pricing: Free; Perplexity Pro is $20/month ($17/month billed annually)

続きを読む： Perplexity vs. ChatGPT

どの ChatGPT 代替品を使用すべきでしょうか?

If you want something similar to ChatGPT with a bit more focus on safety and professional features, Claude is your best bet. On the other hand, if you use Google's Workspace apps, browser, and smartphone OS, Gemini is an obvious choice. If you want a chatbot to help you get work done, go with Zapier Agents. Honestly, there's a case for every app on this list—that's why they're on here.

One other thing I should mention: Meta AI and Grok used to be on this list. I cut them for the most recent update because I just can't get behind them as strong alternatives to ChatGPT. But if you're looking for social integration—with Facebook, Instagram, and WhatsApp for Meta, and with X for Grok—they're worth a look.

While paid plans are now standard, each chatbot on this list has some kind of free plan or trial. So, if you're not sure which one is the best alternative to ChatGPT for you, give a few of them a go and find out.

続きを読む：

• ChatGPTはどのように機能しますか?

• ChatGPT と GPT: 違いは何ですか?

• ChatGPTを独自のデータでトレーニングする方法

• 最高の無料AIツール

• 最高のAIブラウザ

この記事はもともと 2024年 6 月に公開されたものです。最新のアップデートは 2026年5月。