Claude isn't the AI engine with the most users. But it's the one whose users matter most for your B2B business.

In January 2026, Claude recorded 202.9 million monthly visits. More importantly: it holds 29% of the enterprise AI market, is used by more than 70% of Fortune 100 companies, and its enterprise revenue surpassed OpenAI's by mid-2025. Approximately 80% of its users operate in a B2B context — versus 60% for ChatGPT.

If you sell to businesses, your most qualified prospects are probably using Claude. The question is whether Claude is pointing them towards you — or towards your competitors.

What makes Claude fundamentally different

Claude was designed by Anthropic with a philosophy of precision and verification that distinguishes it radically from other AI engines.

1. Claude relies on Brave Search for its web citations

When Claude performs a web search, it uses Brave Search as its retrieval engine — not Google, not Bing. A Profound analysis from 2025 measured an 86.7% overlap between Claude citations and top Brave Search results. Direct consequence: being well-positioned on Brave Search is a Claude-specific lever that no other AI engine shares.

2. Claude applies Constitutional AI — verification first

Anthropic trained Claude with an approach called Constitutional AI, which pushes it to verify information before citing it. Claude verifies each important claim by cross-referencing at least three external sources before retaining it. This makes Claude more conservative in its citations — but also more reliable. A source cited by Claude benefits from a strong credibility signal.

3. Claude has three distinct crawlers to manage

Unlike other AI engines, Anthropic deploys three distinct bots:

  • ClaudeBot: training data collection
  • Claude-SearchBot: indexing for Claude search results
  • Claude-User: real-time access during conversations

Blocking ClaudeBot in your robots.txt only prevents your data from being used for Anthropic's training — not your visibility in responses. Blocking Claude-SearchBot, however, makes you invisible in Claude. This is a very common confusion that deprives companies of visibility without their knowing.

4. Claude values high-value B2B users

Claude Pro subscribers have an average income 3.2 times higher than free ChatGPT users. They are directors, senior consultants, enterprise buyers. Being cited by Claude means being recommended to the most qualified B2B audience in the AI market.

The 10-minute test: check your Claude visibility

Go to claude.ai and activate web search if available.

Sector discovery prompts

"What are the best providers in [your field] for a B2B company in [your country]?" "Recommend an expert in [your service] recognised for their rigour and quality of analysis." "Which companies are reference points in [your field] in [Belgium / France / Switzerland]?"

Direct verification prompts

"What is [your company name] and what services does it offer?" "Is [your company name] recognised in [your field]?"

Claude-specific prompt

"I need to choose a provider in [your field] for my company. What criteria should I use and which players do you recommend?"

This prompt is particularly suited to Claude — it corresponds exactly to the type of complex, multi-criteria query that its enterprise users frequently ask.

Interpreting the results

Claude cites you with verifiable sources ✅

This is the strongest signal — Claude has verified your existence and credibility across multiple sources. Your external authority is working.

Claude knows you but doesn't recommend you ⚠️

Claude has data on you but doesn't position you as a reference. Work on your expertise demonstration content: original data, case studies, transparent methodology.

Claude mentions you with reservations ⚠️

Claude may indicate it "couldn't verify" certain information about you. This signals that your entity isn't sufficiently documented on reliable third-party sources.

Claude doesn't know you ❌

Your company is absent from its sources. Priority: build documented presence on platforms Claude considers authoritative.

Why Claude doesn't cite you: the real reasons

1. You've blocked Claude-SearchBot without knowing it

This is the most frequent and least known cause. If your robots.txt contains a generic rule blocking all AI bots, Claude-SearchBot is probably blocked. Explicitly verify that Claude-SearchBot and Claude-User are authorised.

2. Your content isn't verifiable

Claude requires dated primary sources and traceable claims. An article without sources, without dated statistics, without an identifiable author has very little chance of being retained. Claude prefers not to cite rather than cite a source it can't verify.

3. You're not present on Brave Search

Brave Search is Claude's retrieval engine. If your site isn't well positioned on Brave, Claude won't find you during its web searches. Check your visibility on search.brave.com with your main queries.

4. Your content lacks author signals

Claude applies a strict credibility hierarchy based on author signals. An author with 10+ years of declared experience in the field increases citation probability by 45% according to observed data.

5. Your entity isn't documented on multiple sources

Claude systematically cross-references multiple sources before citing a company. If your business only exists on your own site, Claude can't independently verify your claims. It needs to find you on at least 2 to 3 reliable third-party sources.

The 6 Claude-specific levers

Lever 1 — Check and fix your robots.txt immediately

Open your robots.txt file and verify it explicitly contains:

User-agent: Claude-SearchBot
Allow: /
User-agent: Claude-User
Allow: /

If you want to prevent your data from being used for Anthropic's training while remaining visible in responses, you can block ClaudeBot only:

User-agent: ClaudeBot
Disallow: /

Lever 2 — Write content that is "verifiable by design"

Each article should be written as if Claude were going to verify it source by source. This means: each important statistic with its source and date in the same sentence, links to primary sources, transparent methodology when presenting data. This writing style is exactly what Claude values.

Lever 3 — Check your Brave Search visibility

Test your 5 main queries on search.brave.com. If you don't appear in the Brave top 10 on your key topics, your chances of being cited by Claude during web searches are low. Submit your sitemap to Brave via search.brave.com/webmasters.

Lever 4 — Strengthen your author signals

Add an identifiable author on each article with a detailed bio, a LinkedIn link, and a mention of your experience in the field. Add JSON-LD Person markup for each author. These signals are particularly important for Claude, which cross-references them with external sources to verify credibility.

Lever 5 — Build presence on sources Claude verifies

Identify the publications Claude considers authoritative in your sector — generally specialised media, professional associations, B2B review platforms like G2 or Capterra. A mention in these sources is worth more than a dozen articles on your own blog.

Lever 6 — Publish original data with methodology

Claude explicitly favours content that shows its work: studies with described methodology, first-hand collected data, concrete results with context. Our study on 20 Belgian B2B agencies in ChatGPT is an example of this type of content — it cites real data, a precise method, and verifiable results. This is exactly what Claude values.

Claude vs other AI engines: comparative table

| Criterion | ChatGPT | Perplexity | Gemini | Copilot | Claude | |---|---|---|---|---|---| | Search engine | Bing | Own web | Google | Bing | Brave | | Enterprise market share | 25% | — | — | — | 29% | | User profile | General public | Pro B2B | Generalist | Enterprise | B2B decision-makers | | Citation priority | Volume + authority | Earned media | Google SEO | Bing + LinkedIn | Verifiability | | Strongest signal | Third-party mentions | Earned press | Google ranking | LinkedIn | Primary sources |

Where to start?

Two priority actions in the next 24 hours:

  1. Check your robots.txt — ensure Claude-SearchBot and Claude-User are authorised
  2. Test your Brave Search visibility for your 3 main queries

Our free scoring tool tests your Claude visibility among the 5 analysed engines. Our AI Diagnostic includes a complete benchmark of your competitors on Claude with recommendations specific to this ecosystem.

Sources: theStacc data on Claude enterprise adoption (April 2026), Profound analysis on Claude-Brave Search overlap (2025), study on author signals and Claude citation probability (2025-2026), Anthropic documentation on Claude crawlers.