--- title: "2 Sites Where opus 5.1 Is a Top Search Keyword" url: https://mxverify.uk/keywords/opus-5-1 description: "2 sites on mxverify list “opus 5.1” among the searches that send them the most visitors, by traffic estimates: ietf.org, rfc-editor.org." site: mxverify generated: 2026-11-01T14:39:56.673Z --- # Sites where “opus 5.1” is a top search keyword 2 sites on record list “opus 5.1” among the searches that send them the most visitors, by traffic estimates. It is searched about **49.5K** times a month on Google, worldwide (Google Ads, Sept 2026), at about $1.57 a click in search ads: a month of its searches would cost about **$77.7K** as search ads. Each site checked on the [backlink value checker](https://mxverify.uk/backlink-value) adds its top five search keywords, so this list grows as sites are checked. ## Keyword intelligence - **49.5K** Google monthly search volume ×291 since Oct 2025 - **×131** Last 3 months vs 3 before rising - **76/100** Demand score strong - **41/100** Keyword difficulty (US) possible - **Informational** Search intent wants to learn - **$1.57** Google Ads cost per click top-of-page bids $0.44–$4.00 - **65.9K** Third-party estimated keyword demand Sept 2026 - **2** Sites getting visits from it Sept 2026 ### What the data says - Demand is rising: Google searches for “opus 5.1” multiplied about 291 times (170 to 49.5K) from Oct 2025 to Sept 2026; the last three months averaged 24.1K, about 131 times the three before. - The 2 listed sites take about 2,020 visits a month from “opus 5.1”, 3% of its 65.9K searches (traffic estimates). The other 97% goes to sites not on record here, or ends without a click. - rfc-editor.org takes 58% of the listed sites' visits from “opus 5.1”: one site holds most of this keyword's traffic. - At $1.57 a click (Google Ads), the listed sites' 2,020 visits a month from “opus 5.1” would cost about $3,171 as search ads; rfc-editor.org's alone about $1,853. That is what the traffic would cost to buy, not what it earns. ### 1Demand **Search demand, month by month** Google monthly search volume (Google Ads, worldwide) Third-party estimated keyword demand Search demand, month by month. Google monthly search volume (Google Ads, worldwide): Oct 2025 170, Nov 2025 260, Dec 2025 390, Jan 2026 320, Feb 2026 260, Mar 2026 210, Apr 2026 210, May 2026 170, Jun 2026 170, Jul 2026 590, Aug 2026 22.2K, Sept 2026 49.5K; Third-party estimated keyword demand: Sept 2026 65.9K Every month's figures | | Oct 2025 | Nov 2025 | Dec 2025 | Jan 2026 | Feb 2026 | Mar 2026 | Apr 2026 | May 2026 | Jun 2026 | Jul 2026 | Aug 2026 | Sept 2026 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | Google monthly search volume (Google Ads, worldwide) | 170 | 260 | 390 | 320 | 260 | 210 | 210 | 170 | 170 | 590 | 22.2K | 49.5K | | Third-party estimated keyword demand | — | — | — | — | — | — | — | — | — | — | — | 65.9K | Google monthly search volume: Google Ads, worldwide, read 1 Nov 2026. Third-party estimated keyword demand is a separate source, on the same axis: the two can differ. ### 2Who gets the traffic **Share of the visits, Sept 2026** Each site's latest estimate of its visits from this keyword; “As ads”: those visits at its cost per click, what they would cost to buy; DR: Ahrefs Domain Rating; linking sites: sites linking to it (third-party link index). The sites getting its visits range from DR 91 to 93. **Where these sites' visitors are** - United States 21% - Russia 8% - China 7% - India 6% - Germany 6% - Other countries 52% The listed sites' own visitors by country (all their traffic), weighted by each site's visits from this keyword: their audience, not where the keyword is searched. **Phones and computers** - Phones 56% - Computers and tablets 44% Page loads of the listed sites by Chrome users (Chrome UX Report), weighted by each site's visits from this keyword: a site's device mix, not the keyword's. No source gives a keyword's device split. ### 3Ranking competition - **41/100** Keyword difficulty (US) possible - **34/100** Ranking ease hard - **DR 92** First page, median Ahrefs DR - **151** Linking sites per top-ten page average, US On Google's page: AI Overview People also ask **Google's first page, United States** | # | Site | Page title | DR | | --- | --- | --- | --- | | 1 | anthropic.com | Introducing Claude Opus 5.5 | 92 | | 2 | platform.claude.com | Claude Opus 5 - Claude Platform Docs | 92 | | 3 | reddit.com | Opus 5.1 | 95 | | 4 | reddit.com | Fable 5.1 is Opus 5.1 : r/ClaudeCode | 95 | | 5 | endorlabs.com | Opus 5.5: 6x cheaper and 2x faster than Fable 5.1, but only ... | 74 | | 6 | youtube.com | Claude Opus 5.5 Just Killed Fable 5.1! (and GPT-6 Astra) | 99 | | 7 | cometapi.com | Claude Opus 5.1: Release Status & What to Use Now | 64 | | 8 | myclaw.ai | Fable 5.1 vs Opus 5: Which Claude Should You Run? | 51 | Google's results for “opus 5.1” in the United States, in English, read 1 Nov 2026. DR: Ahrefs Domain Rating; “—”: Ahrefs gives no rating. - Keyword difficulty is 41 of 100 for US results: possible on the vendor's scale. - reddit.com has 2 results in Google's top 8 for “opus 5.1”. - None of the 2 sites listed here is in Google's US top 8 for “opus 5.1”. - The first page's median Ahrefs DR is 92; the lowest-rated result, myclaw.ai at #8, has DR 51. - The top ten pages have about 151 linking sites each on average (US results, third-party link index). - Google shows an AI Overview for “opus 5.1”, citing 3 sites: it sits above the results and takes clicks from them. ### 4Intent and related searches **Informational: wants to learn** The searcher's goal, as a third-party keyword database classifies it (US). #### Questions people ask - Is Opus 5 a good model? - Does Opus 5 cost money? - Is Opus 5 as good as Fable? - Is opus 5.5 cheaper than opus 5? #### Keywords the same sites get visits from - [rfc](https://mxverify.uk/keywords/rfc) 2 of these sites · 2 sites in all - [web proxy](https://mxverify.uk/keywords/web-proxy) 1 of these sites · 2 sites in all - [ietf](https://mxverify.uk/keywords/ietf) 1 of these sites · 1 site in all - [olxc](https://mxverify.uk/keywords/olxc) 1 of these sites · 1 site in all - [rfc 6749](https://mxverify.uk/keywords/rfc-6749) 1 of these sites · 1 site in all - [rfc 7807](https://mxverify.uk/keywords/rfc-7807) 1 of these sites · 1 site in all - [rtp](https://mxverify.uk/keywords/rtp) 1 of these sites · 1 site in all Keywords the listed sites also get visits from, the most shared first: linked by the same sites' traffic, not by meaning. ### 5Opportunity **76** /100 · Demand score, strong How much searching there is and what advertisers pay for it. | | | | | --- | --- | --- | | Searches | 74 | 49.5K a month · weight 40% | | Year | 100 | ×291 since Oct 2025 · weight 20% | | Momentum | 100 | last 3 months +13044% on the 3 before · weight 20% | | Commercial | 31 | $1.57 a click (Google Ads) · weight 20% | **34** /100 · Ranking ease, hard How open Google's first page is: 100 minus its difficulty and strength. | | | | | --- | --- | --- | | Keyword difficulty | 59 | 41 of 100 (US) · weight 50% | | First-page strength | 8 | median Ahrefs DR 92 · weight 50% | ### What to do with it - Strong demand but a hard first page (ease 34): aim at its related searches first and build links before the head term. - Study rfc-editor.org: it takes 58% of the listed sites' visits from “opus 5.1”; its report shows which of its traffic comes from search. - Google answers part of it in an AI Overview: the pages it cites get a link above the results. - The listed sites take 3% of its searches: most of the traffic goes to sites not on record here. A business score needs your own figures (conversion, deal value) and is not made here. Scores are fixed formulas over the figures shown; they are not Google's. ### 6Sources - **Google monthly search volume**, Google Ads cost per click, bids and paid competition: Google Ads, worldwide, read 1 Nov 2026. - **Third-party estimated keyword demand**, cost per click and each site's visits (est.): third-party traffic estimates, Sept 2026. - **Keyword difficulty, intent, SERP features, top-ten links**: a third-party keyword database, United States, read 1 Nov 2026. - **Google's first page, AI Overview, related searches**: Google search, United States, read 1 Nov 2026. - **DR**: Ahrefs Domain Rating. **Linking sites**: a third-party link index. - **Phones and computers**: Chrome UX Report. Tiles, findings, scores and actions are worked out from the figures on this page by fixed rules. | Site | Report | Visits (est.) | Month | | --- | --- | --- | --- | | [ietf.org](https://mxverify.uk/publications/ietf.org) | Audited | 840 | Sept 2026 | | [rfc-editor.org](https://mxverify.uk/publications/rfc-editor.org) | Audited | 1,180 | Sept 2026 | Listed A–Z. A top search keyword is one of the searches that bring a site the most visitors, by estimate. It is not a position in Google, and the order here is not a ranking. Visits (est.): the traffic estimate's own figure for the keyword on that site, which behaves like visits a month, not an amount of money (2026-09-29: it had been shown in dollars). Ad value is what advertisers pay for the keyword — its searches × cost per click — not how hard it is to rank for. This page is kept out of search results until 15 sites share the keyword. Searches, cost per click and ad value above: Google Ads, worldwide. Sites and their visits: third-party traffic estimates, Sept 2026. The traffic estimates' own searches figure for the keyword is in the section below; the two sources often differ several times over. --- Source: mxverify, "2 Sites Where opus 5.1 Is a Top Search Keyword", https://mxverify.uk/keywords/opus-5-1 (retrieved 2026-11-01). How every figure is worked out: https://mxverify.uk/methodology