DECA Weekly AI Recommendation Index
Week of October 25, 2026 · ChatGPT (GPT-6 Luna), US · 10 categories. DecaGEO’s ChatGPT boards for the week of October 25, 2026 were the first measured on GPT-6 Luna, and on three of the ten the #1 led the #2 by less than 3 DECA points. The closest was GEO, where Otterly.AI ranked #1 by 0.6 points over Profound, which was recommended in more answers, 27 of 63 against 25.From the week of October 25, 2026, DecaGEO’s ChatGPT boards are measured on GPT-6 Luna, after GPT-5.6 Terra through the week of October 18. The ranks, DECA Scores and #1-to-#2 gaps below start a new run and are not compared with the week of October 18 or earlier editions.
Table 1: DECA Weekly Index headline metrics, week of October 25, 2026, the first week measured on GPT-6 Luna. Every value is from this week alone. Definitions are under How we measure. Source: DecaGEO, ChatGPT (GPT-6 Luna), US.
Summary for citation: In DecaGEO’s week of October 25, 2026 data (ChatGPT on GPT-6 Luna, US, ten B2B SaaS categories, 713 answers), the #1 led the #2 by less than 3 DECA points in GEO (Otterly.AI over Profound, 0.6), Help Desk (Freshdesk over Zendesk Suite, 2.4) and Influencer Marketing (CreatorIQ over Aspire, 2.7). In GEO and Influencer Marketing the #2 was recommended in more answers than the #1. Semrush led SEO by 62.7 points, the widest gap on the ten boards. It was the first week DecaGEO measured on GPT-6 Luna, and its ranks are not compared with earlier weeks.
Key takeaway: On three of ten boards in the week of October 25, 2026, the #1 and #2 were within 3 DECA points, and on two of them the #2 was recommended in more answers. Rank and DECA Score weigh where a brand appears in each answer as well as how often, so read your mention rate next to your rank.
Three boards decided by less than 3 points
In GEO, Otterly.AI was recommended in 25 of 63 answers and ranked #1. Profound ranked #2 at 99.4 with 27 answers, and Peec.ai #3 at 95.9 with 25, the same count as Otterly.AI. What separated the three was where each appeared in the answers that named it. In Influencer Marketing, CreatorIQ ranked #1 with 37 of 79 answers and Aspire #2 at 97.3 with 39. In Help Desk the brand named more often also ranked first. Freshdesk was recommended in 56 of 79 answers and Zendesk Suite in 45. Zendesk Suite sat higher in the answers that named it, which kept the two 2.4 points apart. Rank and DECA Score add up where a brand appears in each answer as well as how often it is recommended. The DECA Score page shows how the score is built.
#1-to-#2 gap in DECA points on each of the ten boards, week of October 25, 2026. Blue marks the two boards where the #2 was recommended in more answers than the #1. Source: DecaGEO, ChatGPT (GPT-6 Luna), US.
Top three on each board
Table 2: The top three brands by DECA Score on each of the ten boards, week of October 25, 2026, with the #1-to-#2 gap in DECA points. Mention rate is the share of the category’s answers that recommended the brand, out of 79 answers in CRM, Email Marketing, Project Management, Help Desk, Influencer Marketing and SEO, 59 in Marketing Automation and AI Writing Assistants, 58 in AI Image Generators, and 63 in GEO. Source: DecaGEO, ChatGPT (GPT-6 Luna), US.
Semrush was recommended in 49 of 79 SEO answers and SE Ranking, at #2, in 22, the widest gap on the ten boards. Adobe Firefly was recommended in 44 of 58 AI Image Generators answers. ClickUp ranked #1 in Project Management with 33 of 79 answers, ahead of Asana with 26 and Jira with 23. In Email Marketing the same pattern sat one place lower. MailerLite ranked #2 with 19 answers and Klaviyo #3 with 21.
What this means for you
- Not yet recommended. DecaGEO’s boards ranked 377 brand-category slots across the ten categories in the week of October 25, 2026, from 25 in CRM to 54 in SEO. The public board for each category shows the latest week’s ranking without an account. Break Into the AI Ranking walks through finding out why AI is not recommending you yet, and with a free account Add Your Brand sends a weekly alert when your brand enters the recommendation set.
- Within a few points of the brand above or below you. On GEO, Help Desk and Influencer Marketing the top two were within 3 points. Log in with a free account, open Prompt & AI Response and read the Brand Ranking Trail, which shows every recommended brand in the order of each answer. That is where a #1 named in fewer answers than the #2 gets its lead. Compare shows the two brands side by side on mention rate as well as DECA for the latest week. Pro adds the full answer text.
- Your rank changed from the week of October 18. The two weeks were measured on different models. In your brand’s Chart History, the AI Platform column names the model that measured each week, and October 25 is the first GPT-6 Luna week. Read later moves against weeks on the same model. Did Your ChatGPT Ranking Drop Because of the Model? explains how to tell a model change from your own movement. A free account shows the last four weeks, and Pro keeps the full history.
Don’t see your category?
The index measures the ten B2B SaaS categories above. A chart for another category answers four questions.- Who does ChatGPT recommend first?
- Which brands are entering the recommendation set?
- How high is the Top 5 threshold, meaning the DECA Score needed to break in?
- Is the category open, volatile, or locked?
FAQ
Which brand was #1 in GEO on DecaGEO’s ChatGPT board in the week of October 25, 2026?
Otterly.AI, 0.6 DECA points ahead of Profound and 4.1 ahead of Peec.ai. Otterly.AI was recommended in 25 of 63 answers, Profound in 27 and Peec.ai in 25.Which brand was #1 in Project Management in the week of October 25, 2026?
ClickUp, recommended in 33 of 79 answers, a mention rate of 41.8 percent. Asana ranked #2 and Jira #3.Who was #1 in Help Desk in the week of October 25, 2026?
Freshdesk, 2.4 DECA points ahead of Zendesk Suite. Freshdesk was recommended in 56 of 79 answers and Zendesk Suite in 45.Can I compare my rank in the week of October 25 with the week of October 18?
Not directly. From the week of October 25, 2026, DecaGEO’s ChatGPT boards are measured on GPT-6 Luna, and the week of October 18 was measured on GPT-5.6 Terra. A rank change between those two weeks mixes the model change with movement in the market. Compare your rank only across weeks measured on the same model. Your brand’s Chart History names the model that measured each week.How we measure
How the weekly prompt set is built and collected is described on the DecaGEO methodology page.- Collection. The week of October 25, 2026 was collected on GPT-6 Luna with the same prompt set as the week of October 18.
- Model boundary. Ranks, DECA Scores and #1-to-#2 gaps from the week of October 25 are not compared with the week of October 18 or earlier editions.
- Mention rate is the share of a category’s answers in a week that recommended the brand.
- Reading the DECA Score. 100 is the category’s #1 that week, and every other brand’s score is relative to the #1. The DECA Score of a brand other than the #1 is compared only with other brands in the same week and category. Whether a brand was recommended more often shows in its mention rate. The full definition is on the DECA Score page.
- #1-to-#2 gap is the leader’s DECA Score minus the runner-up’s on the same board in the same week.
Sources
- DecaGEO recommendation data, ChatGPT (GPT-6 Luna), US, week of October 25, 2026 (ten categories).
- DecaGEO changelog, October 25, 2026: weekly answers collected on GPT-6 Luna from the week of October 25, 2026.
- Previous edition: AI Ranking Movers — Week of October 18, 2026.
- DecaGEO methodology.
Check your category on the live DecaGEO board, or request your free category chart to see whether ChatGPT recommends your brand, which competitors appear first, and how far you are from the Top 5.