SEO and content optimization platforms · September 2026 Edition
Surfer SEO vs Semrush
Three of twelve models named Surfer SEO first on the direct prompt; seven named Semrush. Both were named by all twelve models and Surfer SEO carries 56 labels and Semrush 43, so the shares are not directly comparable.
Named in three categories this edition.
Boston, United States, founded 2008. Named in seven categories this edition.
First-choice share25%20%Of first choices across the direct, paraphrase, budget and scale prompts, 0 to 100.
Negative rate12%23%Negative labels as a share of the product's labels, 0 to 100.
Rank in category#1#2A position in a field of 16; printed, not drawn.
Labels5643A count; the two differ.
The two percentage rows are drawn on one 0 to 100 track, Surfer SEO reading right to left. Rank and label count are printed, not drawn.Clearscope was named alongside these two in ten of the twelve direct answers. Surfer SEO vs Ubersuggest · Semrush vs Ubersuggest
Share is the count of first choices across the direct, paraphrase, budget and scale prompts over all twelve models, for a mid-market B2B company; rank is within the category; every quote names the model and the prompt it came from. Both figures come from the SEO and content optimization platforms page.
By framing
How many of the twelve models made each the first choice, per way of asking, and how many argued against it.
Surfer SEOFirst choices, of twelve modelsSemrush
Direct37
Paraphrase92
Comparative57
Budget-constrained004 against Surfer SEO · 4 against Semrush
Scale-constrained111 against Semrush
Negative113 against Surfer SEO · 5 against Semrush
Bars are first choices, 0 to 12 each sideModels that argued againstA model can name both, so the two sides of a row do not sum to twelve.
The direct prompt
The plain question, one answer per model, grouped by where Surfer SEO and Semrush stood in it.
Both were the first choice
1 of 12 modelsThe answer named them together, and the judge labeled each a first choice.Gemini 3.5 FlashSemrush, Surfer SEO alternatives: Ahrefs, Clearscope, SE Ranking
Surfer SEO first, Semrush an alternative
2 of 12 modelsSemrush was named in the answer but not as the choice, or not at all.Grok 4.1 FastSurfer SEO alternatives: Ahrefs, Clearscope, Frase, MarketMuse, Semrush
MiniMax M2.5Surfer SEO alternatives: Ahrefs, MarketMuse
Semrush first, Surfer SEO an alternative
6 of 12 modelsSurfer SEO was named in the answer but not as the choice, or not at all.GPT-5.4 miniSemrush alternatives: Ahrefs, Clearscope, Conductor
Perplexity SonarSemrush alternatives: Ahrefs, Clearscope, Surfer SEO
DeepSeek V4 FlashSemrush alternatives: Ahrefs, Clearscope, MarketMuse, Surfer SEO
Qwen 3.7 FlashAhrefs, Semrush alternatives: Clearscope, HubSpot, SE Ranking, Screaming Frog, Sitebulb, Surfer SEO
Kimi K2Semrush alternatives: Ahrefs, Clearscope, MarketMuse, Screaming Frog, Surfer SEO
GLM 4.7 FlashXSemrush alternatives: Ahrefs, Clearscope, NeuronWriter, Surfer SEO
Neither was the first choice, one was named
2 of 12 modelsThe answer put something else first and named one of the two as an alternative.Mistral SmallHubSpot Content Hub, HubSpot Marketing Hub alternatives: Clearscope, MarketMuse, Semrush, Surfer SEO
Llama 4 MaverickKeygrip alternatives: Ahrefs, Clearscope, Screaming Frog, Semrush, Surfer SEO
Neither was named
1 of 12 modelsThe answer made no first choice from these two in this category.Claude Haiku 4.5Sight AI alternatives: Intero Digital, Stratabeat, Ubersuggest, Virayo, Writesonic
Bold names in an answer are the products the judge labeled a first choice; a model naming several gives each of them that label. The full answer text for every row is in the record.
By buyer segment
The same question asked on behalf of a different buyer. Each standing is computed within its segment and they are never added together. The figures above are the mid-market standing, which is the one the category orders by.
Small business
Surfer SEO leads by two points.
Surfer SEO23%#1 of 13Semrush21%#2 of 13Mid-marketThe figures above
Surfer SEO leads by six points.
Surfer SEO25%#1 of 16Semrush20%#2 of 16Enterprise
The order flips: Semrush leads at enterprise.
Semrush12%#3 of 13Surfer SEO2%#7 of 13What the models said about Surfer SEO
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“Surfer SEO — entry plan is $49/mo, but AI tracking requires pricier tiers; more expensive than Frase” DeepSeek V4 Flash · budget prompt · hard negative
“Content optimization platforms like Surfer SEO, Clearscope, Frase, or Rankability... they are highly dangerous when misused” Gemini 3.5 Flash · negative prompt · soft negative
“premium content editors (like Clearscope or Surfer SEO) often start around $100 to $140+ per month” Gemini 3.5 Flash · budget prompt · soft negative
“Ahrefs + Surfer SEO provides the best balance of comprehensive research capabilities and content optimization at $298/month” MiniMax M2.5 · direct prompt · first choice
“The Best All-Rounder: Surfer SEO ... Surfer is widely considered the market leader for real-time content optimization.” Qwen 3.7 Flash · paraphrase prompt · first choice
“Choose Surfer SEO if you want the most mature real-time optimization experience and produce content at volume” Kimi K2 · comparative prompt · first choice
What the models said about Semrush
Every negative label with a quote, up to three, then the highest-weighted positives, up to three. Six of eight in this category shown.
“SEO Tools to Avoid or Use with Caution | Semrush | 40/100 (High) | 3 documented complaints; recurring billing issues” GLM 4.7 FlashX · negative prompt · hard negative
“Avoid: Enterprise tools (Ahrefs/Semrush $99–$139); overkill for small budgets.” Grok 4.1 Fast · budget prompt · hard negative
“Semrush ($140+/mo) — great but overkill for most small budgets” DeepSeek V4 Flash · budget prompt · hard negative
“Semrush is the strongest all-in-one SEO platform for keyword research, site audits, rank tracking, competitive analysis, PPC, and content marketing workflows.” Perplexity Sonar · comparative prompt · first choice
“Choose Ahrefs or Semrush if you need a baseline tool for overall website health, backlink tracking, and competitor espionage.” Gemini 3.5 Flash · comparative prompt · first choice
“If you want one platform only, Semrush is often the best balance of capability, breadth, and cost for mid-market teams.” GPT-5.4 mini · direct prompt · first choice
Comparisons are drawn for the top three products in each category. The output is the models' output; nothing here is a recommendation by the index.