# SEO and content optimization platforms: what AI models recommend, October 2026

GTM AI Recommendation Index, October 2026 Edition. Asked as "SEO and content optimization platform" and as "SEO content optimization tool", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Page: https://gtm-ai-index.com/marketing/seo-content-optimization/

**Standing:** Semrush leads with 21% of first choices; verdict contested. 58 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | Semrush | 21% | 21% | 58 |
| 2 | Surfer SEO | 17% | 17% | 58 |
| 3 | Clearscope | 14% | 17% | 48 |
| 4 | SE Ranking | 10% | 4% | 24 |
| 5 | NeuronWriter | 7% | 0% | 10 |
| 6 | Ubersuggest | 7% | 30% | 10 |
| 7 | Ahrefs | 3% | 17% | 42 |
| 8 | Frase | 3% | 12% | 32 |
| 9 | MarketMuse | 3% | 7% | 29 |
| 10 | Conductor | 3% | 7% | 15 |
| 11 | Google Search Console | 0% | 6% | 17 |
| 12 | Moz | 0% | 17% | 12 |

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Semrush; alternatives Ahrefs, Moz, Surfer SEO, Writesonic
- GPT-5.4 mini: Conductor; alternatives Clearscope, Semrush
- Gemini 3.5 Flash: Clearscope, Semrush; alternatives Ahrefs, MarketMuse, Surfer SEO
- Perplexity Sonar: Semrush; alternatives HubSpot Marketing Hub, MarketMuse, Surfer SEO
- Grok 4.1 Fast: Semrush; alternatives Ahrefs, Clearscope, MarketMuse, SE Ranking
- Mistral Small: Ahrefs, Semrush; alternatives Clearscope, Google Keyword Planner, Google Search Console, HubSpot Marketing Hub
- DeepSeek V4 Flash: Semrush; alternatives Ahrefs, Clearscope, SE Ranking, Surfer SEO
- Llama 4 Maverick: Sight AI
- Qwen 3.7 Flash: Semrush; alternatives Sight AI, Surfer SEO
- Kimi K2: Clearscope; alternatives Frase, Semrush, Surfer SEO
- GLM 4.7 FlashX: Semrush; alternatives Ahrefs, Clearscope, Surfer SEO
- MiniMax M2.5: Semrush; alternatives Conductor, SE Ranking, Sight AI
- GPT-6 Luna: Semrush; alternatives Conductor
- Muse Glimmer 30B: Surfer SEO; alternatives Clearscope, MarketMuse

## Sources the answers cite

78 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- blog.hubspot.com: 38 answers, 63 citations
- trysight.ai: 29 answers, 58 citations
- zapier.com: 26 answers, 27 citations
- onelittleweb.com: 21 answers, 30 citations
- rankability.com: 18 answers, 21 citations
- frase.io: 17 answers, 27 citations
- airops.com: 16 answers, 16 citations
- semrush.com: 15 answers, 18 citations

Pages named in the most answers:

- https://blog.hubspot.com/marketing/b2b-seo-tools (15 answers)
- https://trysight.ai/blog/b2b-seo-content-tools (15 answers)
- https://zapier.com/blog/best-seo-tools (15 answers)
- https://blog.hubspot.com/marketing/content-optimization-tools (14 answers)
- https://onelittleweb.com/top-tools/best-seo-content-optimization-tools (14 answers)
- https://rankability.com/blog/best-seo-content-optimization-tools (14 answers)
- https://airops.com/blog/seo-optimization-software (12 answers)
- https://learn.g2.com/best-seo-tools (12 answers)
- https://blog.hubspot.com/website/content-optimization-tools (11 answers)
- https://trysight.ai/blog/b2b-ai-seo-software (11 answers)

## Warned against

- Semrush: 12 of 58 labels negative. "you cannot afford to waste money on bloated enterprise platforms like Semrush, Ahrefs, or Clearscope, which easily run $100 to over $150 per month" (Gemini 3.5 Flash, budget prompt)
- Surfer SEO: 10 of 58 labels negative. "Surfer SEO if you publish at volume (credit economics will hurt you)" (Kimi K2, negative prompt)
- Clearscope: 8 of 48 labels negative. "tools such as Surfer, Clearscope, or similar editors | Their term suggestions and scores can help with coverage, but they're recommendations—not proof" (GPT-6 Luna, negative prompt)
- Ahrefs: 7 of 42 labels negative. "Ahrefs now offers AI content surfaces... they raise quality, originality, and brand-voice risks if teams over-rely on them." (GPT-5.4 mini, negative prompt)

## Movement since September 2026

Floor: 11 points of share, measured on the calibration repeat.
New leader: Surfer SEO (25%) to Semrush (22%). Margin 4 points, within noise.

- Surfer SEO: 25% to 18%, −8. Inside the floor by 3 points · rank 1 → 2 of 71.
- Clearscope: 6% to 12%, +6. Inside the floor by 5 points · rank 4 → 3 of 71.
- SE Ranking: 6% to 12%, +6. Inside the floor by 5 points · rank 5 → 4 of 71.
- Ubersuggest: 12% to 8%, −4. Inside the floor by 7 points · rank 3 → 5 of 71.
- MarketMuse: 0% to 4%, +4. Inside the floor by 7 points · rank 18 → 7 of 71.
- Semrush: 20% to 22%, +2. Inside the floor by 9 points · rank 2 → 1 of 71.
- Conductor: 2% to 4%, +2. Inside the floor by 9 points · rank 10 → 8 of 71.
- NeuronWriter: 2% to 4%, +2. Inside the floor by 9 points · rank 9 of 71, unchanged.
- Frase: 4% to 2%, −2. Inside the floor by 9 points · rank 8 → 11 of 71.
- BrightEdge: 2% to 0%, −2. Inside the floor by 9 points · rank 11 → 49 of 71.
- Ahrefs: 4% to 4%, ±0. Inside the floor by 11 points · rank 7 → 6 of 71.
- Google Search Console: 0% to 0%, ±0. Inside the floor by 11 points · rank 19 → 16 of 71.

## Record

- Method: https://gtm-ai-index.com/methodology/
- Raw judge labels and full responses: https://gtm-ai-index.com/data/
- License: CC BY 4.0. Cite as GTM AI Recommendation Index, October 2026 Edition, gtm-ai-index.com.