Why does Gemini recommend my brand but ChatGPT doesn't?
Because each company runs its own bots and builds answers from the pages it retrieves, so what one engine finds can differ from another. Check that every engine's search bot can reach you, then compare which sources each one cites for the same prompt. The gap is usually a missing access rule or a source only one engine uses.
Free to read, no signup. Nova compares each engine's answer and sources side by side.
Each company runs its own search bots
Straight from their own documentation. No engine publishes how its answers compare with another's.
OAI-SearchBot feeds ChatGPT search
OpenAI says OAI-SearchBot surfaces sites in ChatGPT search, and that robots.txt changes take about 24 hours. GPTBot is a separate bot for training.
Overview of OpenAI crawlersPerplexityBot indexes for Perplexity
Perplexity says PerplexityBot indexes sites so they can be surfaced and linked in its search results, and that its bot settings work independently of each other.
Perplexity crawlersClaude-SearchBot supports Claude search
Anthropic says Claude-SearchBot crawls to improve search results and Claude-User fetches pages for user questions. Blocking them can reduce visibility there.
Does Anthropic crawl data from the web?Google AI features follow Googlebot rules
Google says Googlebot's robots.txt rules manage crawling for Search, and pages must be indexed and snippet-eligible to appear in its AI features.
AI features and your websiteFive steps to close an engine gap
Do it by hand with these steps, or hand the whole thing to Nova.
Run the same prompts everywhere
Ask a set of prompts in each engine, in fresh sessions, and note where you appear and where you don't.
Nova: runs your prompts across engines and logs the results.
Check each engine's access
Confirm OAI-SearchBot, PerplexityBot, Claude-SearchBot and Googlebot can reach your pages and aren't blocked by rules.
Nova: checks access for each engine's search bot.
Compare the cited sources
List the pages each engine cites for the same prompt. Note sources one engine uses and another doesn't.
Nova: lines up the cited sources per engine.
Find what the winning engine sees
Open the sources behind the engine that names you. Find what they say and whether the others can reach them.
Nova: marks sources only the winning engine cites.
Fix and recheck
Open access where needed, and earn or improve the sources the other engines use. Re-run in a few weeks.
Nova: drafts the fixes for approval and re-checks later.
Short on time? Nova, your AI brand visibility expert, runs this Maneuver on your brand and tracks the result.
Take it to NovaEach engine, its access and its sources
| Engine | You appear? | Bot access | Top cited source | Gap |
|---|---|---|---|---|
| Gemini | Yes | Allowed | [Your guide page] | None |
| ChatGPT | No | OAI-SearchBot blocked | [Review site] | Allow bot, request listing |
| Perplexity | Sometimes | Allowed | [Forum thread] | Add a helpful answer |
Nova then re-runs the prompts at 30 days, so you see whether the gap narrows.
Take this Maneuver into your own AI agent
Get engine-disparity.md, a ready-to-use skill file with a per-engine run log, an access check and a source comparison table. Drop it into Claude, Cursor or any agent that reads SKILL.md files.
Skill file for Claude, Cursor and other agents
- A per-engine run log
- A bot access checklist
- A source comparison table
Questions, answered.
Relevant reads
All articlesLet Nova compare every engine
Nova opens with this Maneuver loaded. You approve every change before it ships.