Summary
The model you name decides whether the answer is current, and that is the whole decision.
The tool description draws the one distinction that matters — the sonar models go out to the web, Grok 4 answers from what it was trained on — and everything else on the call is a passthrough. This is a route to another model rather than a search index of its own, so the quality question is really a question about OpenRouter's models and your budget for them.
What it is
A one-tool search server that forwards a query to Perplexity or Grok models through OpenRouter and returns the answer.
What you get
- A single search call taking a query and the model to answer it
- Perplexity's sonar, sonar-pro, sonar-reasoning-pro and sonar-deep-research search the web for current information
- Grok 4 answers from training data, without real-time search
- maxTokens, temperature and timeout set per call
Requirements
OPENROUTER_API_KEY, and OpenRouter access to whichever of these models you name in the call.
Setup effort
One command plus a key — bunx nexus-mcp, then supply credentials