Looking for free tools to help with keyword research? You’re not alone. Bloggers, SEO beginners, and small business owners often need alternatives to pricey tools like Ahrefs or SEMrush. Thankfully, AI chatbots now offer smart, cost-free options.
In this post, we’ll explore the best free AI chatbots for keyword research: ChatGPT, DeepSeek Chat, Claude, Perplexity, Gemini, and Microsoft Copilot. These tools can suggest keywords, analyze trends, and help plan content, making SEO easier and more affordable than ever.
1. ChatGPT – Best for Keyword Brainstorming
ChatGPT by OpenAI is perfect for generating keyword ideas and long-tail phrases.
How to use it:
- Ask: “What are some trending keywords in digital marketing?”
- Follow up: “Give me long-tail keywords for content marketing.”
While ChatGPT doesn’t provide live data, it’s excellent for brainstorming and content planning.
2. DeepSeek Chat – Free, Open-Source SEO AI Chatbots
DeepSeek Chat offers keyword ideas, readability tips, and content suggestions.
Why it’s great:
- Free to use with “DeepThink” search mode
- Suggests SEO keywords based on context
- Helps improve existing content
It’s a solid tool for generating structured keyword lists and content outlines.
3. Claude – Contextual SEO Companion
Claude from Anthropic understands content context deeply.
Use Claude to:
- Analyze blog drafts and suggest relevant keywords
- Find what competitors are ranking for
- Discover niche-specific search terms
Claude is great for tailored, intelligent keyword suggestions.
4. Google Gemini – Search-Based Keyword Insights
Gemini combines AI with real search data from Google Ranking.
Why choose Gemini?
- Shows keyword search volume
- Suggests trending queries
- Helps identify low-competition terms
It’s ideal for users wanting real-time keyword metrics directly from Google’s ecosystem.
5. Perplexity – Real-Time Keyword Discovery
Perplexity is a live Q&A chatbot that pulls keyword suggestions from current sources.
Features:
- Gives direct answers with citations
- Useful for trending topics and comparisons
- Answers queries like: “What are the top keywords for fitness blogs?”
It’s quick, accurate, and ideal for keyword discovery on the go.
6. Microsoft Copilot – AI Keyword Tool Built Into Your Workflow
Copilot integrates with tools like Bing, Word, and Excel.
Highlights:
- Suggests keywords while you write
- Answers questions like: “What’s trending in tech?”
- Works directly inside Office tools
It’s perfect for users who want keyword help without having to switch tabs.
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Final Thoughts
Whether you’re blogging, building a website, or managing SEO for your business, these AI chatbots make keyword research fast, free, and fun. Try combining them—use ChatGPT for brainstorming, Gemini for data, and Copilot for writing.
For more in-depth SEO strategies, check out Moz’s Keyword Research Guide.
FAQs
What is the best free AI chatbot for keyword research?
ChatGPT, Claude, DeepSeek Chat, Gemini, Perplexity, and Copilot are all excellent tools, depending on your needs.
Can AI chatbots replace paid SEO tools?
Not entirely, but they’re great for content ideas, keyword suggestions, and early-stage research.
Are these tools beginner-friendly?
Yes! Just type your questions in plain English, and the bots do the rest.
Do AI tools give accurate keyword data?
Some (like Gemini and Perplexity) use real-time data, while others are best for generating ideas.
How can I use ChatGPT for keyword research?
Ask it for trending or long-tail keywords, and follow up with content outline requests.