What are the best keyword research platforms for building a keyword list for a new content strategy?

For building a keyword list for a new content strategy, the best platform depends on your budget, SEO maturity, and whether you want pure keyword discovery or also competitive/intent insights. Here are the strongest options:

Best overall keyword research platforms

1. Semrush

Best for: Full-funnel keyword research and competitive analysis
Why it’s good:

• Large keyword database
• Strong keyword difficulty and intent data
• Great for finding competitor gaps
• Useful for clustering and topic discovery
• Also helps with content planning and tracking

Best if: You want one platform to handle research, competitor analysis, and content strategy.

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2. Ahrefs

Best for: Keyword discovery + competitor content analysis
Why it’s good:

• Excellent backlink and organic traffic insights
• Strong “Content Gap” and keyword explorer tools
• Great for finding what competitors rank for
• Reliable for search volume and ranking difficulty

Best if: You want to reverse-engineer competitor content and find high-opportunity topics.

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3. Google Keyword Planner

Best for: Free baseline keyword ideas
Why it’s good:

• Free with a Google Ads account
• Direct from Google
• Useful for initial seed keyword expansion
• Good for volume ranges and broad related ideas

Limitations:

• Designed for ads, not SEO
• Less precise and less useful for content intent

Best if: You need a no-cost starting point.

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4. AlsoAsked

Best for: Question-based content ideas and topical coverage
Why it’s good:

• Pulls “People Also Ask” style queries
• Great for FAQ sections, blog outlines, and topical clusters
• Helps map user intent and subtopics

Best if: You’re building informational content and want to cover questions thoroughly.

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5. AnswerThePublic

Best for: Early-stage topic ideation
Why it’s good:

• Excellent for brainstorming question-based keywords
• Visualizes related searches and long-tail topics
• Helpful for finding how/why/what queries

Limitations:

• Less robust for validation and prioritization than SEMrush/Ahrefs

Best if: You’re in the ideation phase and want content angles fast.

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6. LowFruits

Best for: Finding low-competition long-tail keywords
Why it’s good:

• Focuses on weak SERPs and easy-ranking opportunities
• Great for smaller sites or newer domains
• Useful for identifying quick wins

Best if: You’re building content on a newer site and need achievable targets.

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7. Keyword Surfer

Best for: Quick, lightweight keyword research in-browser
Why it’s good:

• Chrome extension
• Shows search volume and related terms in Google results
• Fast for checking ideas while browsing

Best if: You want a simple, fast workflow without jumping into a full platform.

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8. Exploding Topics

Best for: Trend discovery and future content opportunities
Why it’s good:

• Helps identify emerging topics before they peak
• Useful for editorial strategy and thought leadership

Best if: Your strategy includes trend-led or timely content.

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Best platform combinations by use case

If you want the strongest all-around setup:

• Semrush or Ahrefs
• Plus AlsoAsked or AnswerThePublic for question mining

If you’re on a budget:

• Google Keyword Planner
• Keyword Surfer
• AlsoAsked free/limited use or AnswerThePublic

If you’re targeting easier ranking opportunities:

• LowFruits
• Ahrefs or Semrush for validation

If your content strategy is informational and topical:

• AlsoAsked
• AnswerThePublic
• Semrush Topic Research or Ahrefs Keywords Explorer

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What to look for in a keyword platform

Choose tools that provide:

• Search volume
• Keyword difficulty
• Search intent
• SERP analysis
• Competitor keyword gap data
• Long-tail and question keywords
• Filtering and export options

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Simple recommendation

If you want the best practical choice:

• Best premium platform: Semrush
• Best for competitor-driven research: Ahrefs
• Best free starter option: Google Keyword Planner
• Best for content ideation: AlsoAsked + AnswerThePublic
• Best for low-competition opportunities: LowFruits

If you want, I can also give you:

1. a ranked list by budget,
2. a workflow for building a keyword list from scratch, or
3. a comparison table of Semrush vs Ahrefs vs free tools.