Best SEO tools (worth paying for?)

We asked 10 models: Which SEO tools are actually worth paying for? Each named its own top 10.

Asked 4 ways: List request · Buyer asking for advice · Search query · Worth paying for?. Share of voice pools every wording.

Agreement between models: 77%
Same model, run twice: 85%
Different picks: 24

When agreement between models is well below a model's agreement with itself, the split reflects real differences in taste rather than randomness.

The consensus

Each cell is the position that model gave the pick; blank means it left the pick off. Click a row for each model's reasoning.

#	Pick	Listed by	Claude Haiku 5.5	GPT-6 Luna	Gemini 4 Argon	Qwen 3.8 Flash	DeepSeek V4 Pro	GLM-5.3	Kimi K3	MiniMax M3	Mistral Large 4	Nemotron 3 Ultra
1	Ahrefs	10/10	1	1	1	1	1	1	1	1	1	1
Claude Haiku 5.5 (#1) Best all-round backlink index and keyword data; the most-used paid SEO toolkit. GPT-6 Luna (#1) Excellent backlink index, keyword research, and competitor analysis make it a strong all-around investment. Gemini 4 Argon (#1) Unmatched backlink index and competitor analysis make it the undisputed industry standard. Qwen 3.8 Flash (#1) Best all-rounder: backlinks, keyword research, site audits in one. DeepSeek V4 Pro (#1) Best-in-class backlink index and competitor research, unmatched for link building and content gap analysis. GLM-5.3 (#1) Best backlink data and keyword research; the all-around value pick. Kimi K3 (#1) Best backlink index and clean interface; core workflow essential. MiniMax M3 (#1) Best-in-class backlink and keyword data for serious SEO work. Mistral Large 4 (#1) Best backlink index and keyword data; worth every penny for serious SEO. Nemotron 3 Ultra (#1) Unmatched backlink index and keyword data depth
2	Semrush	10/10	2	2	2	2	2	2	2	2	2	2
Claude Haiku 5.5 (#2) Broad suite covering keywords, audits, competitor analysis and rank tracking in one place. GPT-6 Luna (#2) Broad, polished research and competitive tools deliver value for teams managing multiple SEO workflows. Gemini 4 Argon (#2) The most complete all-in-one marketing suite for deep keyword research and tracking. Qwen 3.8 Flash (#2) Broadest toolkit incl. PPC/competitor data; pricier but worth it. DeepSeek V4 Pro (#2) All-in-one powerhouse for keyword research, rank tracking, and PPC data; the most versatile toolkit. GLM-5.3 (#2) Broadest toolkit: keywords, PPC, competitor data, content in one place. Kimi K3 (#2) Broadest all-in-one SEO toolkit with strong keyword and competitor data. MiniMax M3 (#2) All-in-one toolkit covering keywords, audits, and competitor tracking. Mistral Large 4 (#2) Unmatched competitor research and PPC + SEO in one powerful platform. Nemotron 3 Ultra (#2) Comprehensive all-in-one suite for research and tracking
3	Screaming Frog SEO Spider	10/10	4	4	3	3	4	4	3	4	3	3
Gemini 4 Argon (#3) Essential, affordable desktop crawler for diagnosing complex technical SEO issues quickly. Qwen 3.8 Flash (#3) Unbeatable cheap crawls; auditors' default desktop tool. Kimi K3 (#3) Technical crawling gold standard; yearly license is a bargain. Mistral Large 4 (#3) Technical SEO audits done right; cheap, fast, and essential for site health. Nemotron 3 Ultra (#3) Essential technical crawler for site audits at scale Claude Haiku 5.5 (#4) Desktop crawler that finds technical issues fast; affordable and indispensable for audits. GPT-6 Luna (#4) Deep technical crawling catches issues that broader platforms often miss, at a modest cost. DeepSeek V4 Pro (#4) The gold standard for technical audits; crawls large sites faster and deeper than anything else. GLM-5.3 (#4) Indispensable technical site audits at a fair one-time price. MiniMax M3 (#4) Essential technical SEO crawler for site audits and fixes.
4	Surfer SEO	9/10	6	7	5		6	5	4	3	4	5
MiniMax M3 (#3) Top content optimization tool with data-driven on-page guidance. Kimi K3 (#4) Content optimization pays off when publishing at volume. Mistral Large 4 (#4) Content optimization that actually moves rankings; great ROI for content teams. Gemini 4 Argon (#5) Best-in-class on-page optimization tool for aligning content with top-ranking search results. GLM-5.3 (#5) Best-in-class on-page optimization and content scoring. Nemotron 3 Ultra (#5) Best content optimization with real-time SERP analysis Claude Haiku 5.5 (#6) Practical on-page content optimization tool that helps pages match top-ranking content. GPT-6 Luna (#7) Useful content optimization guidance can speed production, especially for editorial teams.
5	Moz Pro	8/10	5	6		4	9	3	10		5	4
GLM-5.3 (#3) Solid keyword and link tools, though trailing Ahrefs on data quality. Qwen 3.8 Flash (#4) Solid rank tracking and Domain Authority ecosystem for beginners. Nemotron 3 Ultra (#4) Reliable rank tracking and domain authority metric Claude Haiku 5.5 (#5) Solid keyword research and rank tracking with an easy-to-read interface. Mistral Large 4 (#5) Solid for beginners and local SEO, though pricier than its data justifies now.
6	Google Search Console	7/10	3	3		7	3	8			7	6
Claude Haiku 5.5 (#3) Free, authoritative source of real Google search performance data; essential. GPT-6 Luna (#3) Free, first-party performance and indexing data makes it indispensable for any site owner. DeepSeek V4 Pro (#3) Indispensable and free, but the paid value is in pairing it with tools that interpret its data. Nemotron 3 Ultra (#6) Free but indispensable for direct Google insights Qwen 3.8 Flash (#7) Free and essential; you shouldn't pay for what Google gives away. Mistral Large 4 (#7) Free and essential—ignoring it would be malpractice. GLM-5.3 (#8) Free and essential; only direct source of your real query data.
7	Sitebulb	7/10			4	9	5	9	7	8		7
Gemini 4 Argon (#4) Translates complex technical website crawls into visual, prioritized, and actionable audit reports. DeepSeek V4 Pro (#5) Makes technical SEO findings actually understandable with excellent visualizations and prioritized insights. Kimi K3 (#7) Technical audit visualizations justify desktop license for agencies. Nemotron 3 Ultra (#7) Superior visual technical audits with actionable prioritization MiniMax M3 (#8) Polished technical audit tool with clear visualizations and prioritization. Qwen 3.8 Flash (#9) Crawl + audit with the clearest actionable reports available.
8	SE Ranking	7/10	9	10	7	6		7	5	7
Kimi K3 (#5) Solid all-rounder at half the price of bigger suites. Qwen 3.8 Flash (#6) Budget SERP tracking; fine if money is tight, otherwise skip. Gemini 4 Argon (#7) Delivers 90% of enterprise tool functionality at a fraction of the cost. GLM-5.3 (#7) Cheaper Semrush alternative with surprisingly complete features. MiniMax M3 (#7) Solid mid-tier rank tracking with strong agency reporting features. Claude Haiku 5.5 (#9) Good value for money with strong rank tracking and site audit features.
9	Majestic	6/10		8	10			6	9	6	8
GLM-5.3 (#6) Deep historical backlink index for link-focused workflows. MiniMax M3 (#6) Premier backlink history database, strong for link profile analysis. GPT-6 Luna (#8) Its backlink-focused metrics and link discovery remain useful for serious link analysis. Mistral Large 4 (#8) Unique trust flow metrics; worth it if link building is your focus. Gemini 4 Argon (#10) Deep historical link data and proprietary trust metrics invaluable for domain vetting.
10	Clearscope	5/10	8		6				8		6	10
Gemini 4 Argon (#6) Superior NLP-driven content grading that consistently helps writers outrank tough competition. Mistral Large 4 (#6) Premium content intelligence; expensive but unmatched for enterprise content. Claude Haiku 5.5 (#8) Reliable content optimization grounded in term relevance; well regarded by content teams. Kimi K3 (#8) Premium content grading worth it for high-stakes editorial teams.
11	Mangools	3/10			8				6	5
MiniMax M3 (#5) Affordable suite (KWFinder, etc.) great for freelancers and small sites. Kimi K3 (#6) Affordable, beginner-friendly keyword research with decent accuracy. Gemini 4 Argon (#8) Extremely intuitive interface with the best value for straightforward keyword difficulty analysis.
12	BrightLocal	3/10	7		9	5
Qwen 3.8 Flash (#5) The go-to paid stack for local SEO citations and reviews. Gemini 4 Argon (#9) Indispensable for managing local citations, tracking map rankings, and auditing Google profiles.
13	Google Analytics	2/10	10	5
GPT-6 Luna (#5) Free conversion and engagement measurement helps connect organic traffic to business outcomes.
14	Looker Studio	1/10					7
DeepSeek V4 Pro (#7) Free but essential paid companion to any stack; builds client-ready dashboards from any data source.
15	BrightEdge	1/10				8
No reasons recorded.

9 lower-scoring picks are not shown; every ballot below lists them in full.

Most divisive

Picks most models listed, at very different positions

Moz Pro#3 for GLM-5.3 #10 for Kimi K3
Google Search Console#3 for Claude Haiku 5.5 #8 for GLM-5.3
Sitebulb#4 for Gemini 4 Argon #9 for GLM-5.3

Hot takes

Picks that appear on only one ballot

Looker Studio at #7, only DeepSeek V4 Pro
BrightEdge at #8, only Qwen 3.8 Flash
Keyword Insights at #8, only DeepSeek V4 Pro
Keywords Everywhere at #8, only Nemotron 3 Ultra
AccuRanker at #9, only GPT-6 Luna
Keyworddit at #9, only MiniMax M3
ContentKing at #9, only Mistral Large 4
AlsoAsked at #9, only Nemotron 3 Ultra
Detailed SEO Extension at #10, only DeepSeek V4 Pro
Keyword.com at #10, only Mistral Large 4

Every ballot

Hover a pick to find it on the other ballots. Marked picks appear on no other ballot.

Claude Haiku 5.5

Ahrefs
Semrush
Google Search Console
Screaming Frog SEO Spider
Moz Pro
Surfer SEO
BrightLocal
Clearscope
SE Ranking
Google Analytics

85% with consensus · 92% self-consistent

GPT-6 Luna

Ahrefs
Semrush
Google Search Console
Screaming Frog SEO Spider
Google Analytics
Moz Pro
Surfer SEO
Majestic
AccuRanker
SE Ranking

82% with consensus · 79% self-consistent

Gemini 4 Argon

Ahrefs
Semrush
Screaming Frog SEO Spider
Sitebulb
Surfer SEO
Clearscope
SE Ranking
Mangools
BrightLocal
Majestic

85% with consensus · 96% self-consistent

Qwen 3.8 Flash

Ahrefs
Semrush
Screaming Frog SEO Spider
Moz Pro
BrightLocal
SE Ranking
Google Search Console
BrightEdge
Sitebulb
SpyFu

85% with consensus · 80% self-consistent

DeepSeek V4 Pro

Ahrefs
Semrush
Google Search Console
Screaming Frog SEO Spider
Sitebulb
Surfer SEO
Looker Studio
Keyword Insights
Moz Pro
Detailed SEO Extension

81% with consensus · 84% self-consistent

GLM-5.3

Ahrefs
Semrush
Moz Pro
Screaming Frog SEO Spider
Surfer SEO
Majestic
SE Ranking
Google Search Console
Sitebulb
SpyFu

88% with consensus · 77% self-consistent

Kimi K3

Ahrefs
Semrush
Screaming Frog SEO Spider
Surfer SEO
SE Ranking
Mangools
Sitebulb
Clearscope
Majestic
Moz Pro

89% with consensus · 72% self-consistent

MiniMax M3

Ahrefs
Semrush
Surfer SEO
Screaming Frog SEO Spider
Mangools
Majestic
SE Ranking
Sitebulb
Keyworddit
SpyFu

82% with consensus · 85% self-consistent

Mistral Large 4

Ahrefs
Semrush
Screaming Frog SEO Spider
Surfer SEO
Moz Pro
Clearscope
Google Search Console
Majestic
ContentKing
Keyword.com

93% with consensus · 92% self-consistent

Nemotron 3 Ultra

Ahrefs
Semrush
Screaming Frog SEO Spider
Moz Pro
Surfer SEO
Google Search Console
Sitebulb
Keywords Everywhere
AlsoAsked
Clearscope

94% with consensus · 89% self-consistent

Who agrees with whom

Overlap between two models' lists, weighted toward the top · 100 means identical · Color runs from 71 (lightest) to 90 (darkest)

	Claude Haiku 5.5	GPT-6 Luna	Gemini 4 Argon	Qwen 3.8 Flash	DeepSeek V4 Pro	GLM-5.3	Kimi K3	MiniMax M3	Mistral Large 4	Nemotron 3 Ultra
Claude Haiku 5.5		90	77	82	87	82	76	73	84	84
GPT-6 Luna	90		71	76	85	80	73	73	81	80
Gemini 4 Argon	77	71		77	79	79	90	82	83	82
Qwen 3.8 Flash	82	76	77		73	84	78	72	81	85
DeepSeek V4 Pro	87	85	79	73		77	76	74	76	81
GLM-5.3	82	80	79	84	77		80	84	85	87
Kimi K3	76	73	90	78	76	80		88	85	82
MiniMax M3	73	73	82	72	74	84	88		79	76
Mistral Large 4	84	81	83	81	76	85	85	79		89
Nemotron 3 Ultra	84	80	82	85	81	87	82	76	89