Best Share of Voice SEO Tools: Semrush vs Ahrefs vs Sellm Compared
Quick Comparison
Which Share of Voice Tool Do You Need?
The best tool depends on whether you need traditional SEO tracking, AI visibility, or both:
Choosing the right share of voice SEO tool is critical for understanding your competitive position. But in 2026, you need to track visibility in two distinct channels: traditional search engines (Google, Bing) and AI platforms (ChatGPT, Claude, Gemini).
In this comparison, we'll analyze the leading SEO share of voice tools to help you pick the right solution—or combination of solutions—for your needs.
What to Look for in a Share of Voice SEO Tool
Before comparing specific tools, let's establish what makes a great share of voice SEO tool:
- Accurate keyword tracking: Reliable position monitoring across your target keywords
- Weighted calculations: SoV based on search volume and CTR, not just rank counts
- Competitor benchmarking: Easy comparison against multiple competitors
- Historical trends: Track changes over time to measure strategy effectiveness
- Actionable insights: Recommendations for improvement, not just data
For modern visibility tracking, you also need to consider AI share of voice—whether your brand appears in ChatGPT, Claude, and other AI-generated responses. This requires specialized tools that traditional SEO platforms don't provide.
Detailed Tool Comparison: Semrush vs Ahrefs vs Sellm
| Feature | Semrush | Ahrefs | Sellm |
|---|---|---|---|
| Primary Focus | All-in-one SEO suite | Backlinks & SEO | AI visibility tracking |
| SEO Share of Voice | ✅ Excellent | ✅ Good | ❌ Not primary focus |
| AI Share of Voice | ❌ Not available | ❌ Not available | ✅ Primary feature |
| ChatGPT Tracking | ❌ | ❌ | ✅ |
| Claude Tracking | ❌ | ❌ | ✅ |
| Gemini Tracking | ❌ | ❌ | ✅ |
| Perplexity Tracking | ❌ | ❌ | ✅ |
| Keyword Research | ✅ Extensive | ✅ Extensive | Limited |
| Backlink Analysis | ✅ Good | ✅ Best in class | ❌ |
| Competitor Analysis | ✅ Comprehensive | ✅ Good | ✅ AI-focused |
| Starting Price | $129.95/month | $99/month | $29/month |
| Free Option | 7-day trial | Free tools (limited) | Free SoV tool |
Semrush Share of Voice: Deep Dive
Semrush share of voice capabilities are among the most comprehensive for traditional SEO. The platform calculates your visibility across tracked keywords, weighted by search volume and your ranking position.
Semrush SoV Strengths
- Position Tracking: Track thousands of keywords with daily updates
- Market Explorer: Understand total addressable market by keyword cluster
- Competitive Positioning: Visual share of voice charts comparing up to 5 competitors
- SERP Features: Track featured snippets, local packs, and other SERP elements
- Historical Data: Years of historical rankings for trend analysis
Semrush SoV Limitations
- No AI visibility: Cannot track mentions in ChatGPT, Claude, or other AI platforms
- Price: Expensive for small businesses ($129.95/month minimum)
- Complexity: Feature-rich but steep learning curve
Best for: Enterprises and agencies needing comprehensive traditional SEO tracking with deep competitive intelligence.
Ahrefs Share of Voice Analysis
Ahrefs approaches SEO share of voice through its powerful rank tracking and domain comparison features. While it doesn't have a dedicated "share of voice" label, you can calculate SoV using its Traffic Share metrics.
Ahrefs SoV Strengths
- Traffic Share by Domain: See estimated traffic distribution among competitors
- Content Gap Analysis: Find keywords competitors rank for that you don't
- Backlink Authority: Best-in-class link data influences organic visibility
- Rank Tracker: Accurate position tracking with visibility percentage
Ahrefs SoV Limitations
- No dedicated SoV dashboard: Requires manual calculation or workarounds
- No AI tracking: No visibility into ChatGPT, Claude, Gemini mentions
- Interface: Some find it less intuitive than Semrush
Best for: SEO professionals who prioritize backlink analysis and content gap research alongside visibility tracking.
Sellm: The AI Share of Voice Tool
Sellm is purpose-built for the new frontier of visibility: AI share of voice. While Semrush and Ahrefs excel at traditional SEO, Sellm focuses exclusively on tracking your brand's presence in AI-generated responses.
Sellm AI SoV Strengths
- Multi-platform tracking: ChatGPT, Claude, Gemini, Perplexity, Grok, Copilot
- Citation analysis: See when and how AI mentions your brand
- Sentiment monitoring: Track positive vs negative AI recommendations
- Competitive benchmarking: Compare your AI visibility to competitors
- Query-level insights: See exactly which questions trigger mentions
- Statistical reliability: Multiple queries per term for accurate data
Sellm Limitations
- Not a traditional SEO tool: Doesn't track Google rankings or backlinks
- Newer category: AI visibility tracking is an emerging field
Best for: Brands and marketers who need to track visibility in AI-powered search and want to understand their AI share of voice.
Try Sellm's Free AI Share of Voice Tool
Compare your brand's visibility in ChatGPT against competitors. See who AI recommends when users ask about your industry.
Check Your AI Share of Voice Free →Which Tool(s) Do You Need?
The answer depends on your visibility goals:
For Traditional SEO Only
If you only need to track Google rankings and SEO share of voice, choose between:
- Semrush: Best all-in-one solution with dedicated SoV features
- Ahrefs: Best if backlink analysis is equally important
For AI Visibility Only
If you specifically need to track AI share of voice in ChatGPT, Claude, and other AI platforms:
- Sellm: The specialized solution for AI visibility tracking
For Complete Visibility (Recommended)
For a complete picture of your brand's visibility in 2026, you need both:
- Semrush or Ahrefs for traditional SEO share of voice
- Sellm for AI share of voice
This combination ensures you're tracking visibility where your customers actually search—both in Google and in AI conversations.
Frequently Asked Questions About Share of Voice Tools
Does Semrush have share of voice tracking? ▼
Yes, Semrush share of voice is one of its core features. The Position Tracking tool calculates your visibility percentage across tracked keywords, comparing you to competitors. It's weighted by search volume and ranking position, giving you a true measure of your organic visibility in Google search results.
What is the best free share of voice SEO tool? ▼
For traditional SEO, there's no comprehensive free share of voice SEO tool—both Semrush and Ahrefs require paid subscriptions for SoV features. For AI share of voice, Sellm offers a free tool that lets you compare your brand's visibility in ChatGPT against a competitor.
Can I track AI share of voice with Semrush or Ahrefs? ▼
No. Neither Semrush nor Ahrefs currently track AI share of voice—they're designed for traditional search engine visibility. To track your brand's mentions in ChatGPT, Claude, Gemini, and other AI platforms, you need a specialized AI share of voice tool like Sellm.
How accurate are share of voice tools? ▼
Accuracy varies by tool and methodology. For traditional SEO, Semrush and Ahrefs use estimated search volumes and CTR curves, which are reasonably accurate for comparative analysis. For AI share of voice, tools like Sellm run multiple queries per term to account for response variability—single-query tools are statistically unreliable. Learn more about reliability in brand monitoring platforms.
Conclusion: Build Your Complete Visibility Stack
In 2026, tracking share of voice means monitoring both traditional search and AI platforms:
- Semrush or Ahrefs for Google/Bing visibility
- Sellm for ChatGPT, Claude, Gemini, and Perplexity visibility
Together, these tools give you a complete picture of where your brand appears when customers search—whether they're using a search engine or asking an AI assistant.
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