Web search

Augment responses with real-time web data. Two engines are available: the model's native search (if supported) or Exa. They price differently — know which you're asking for.

resp, err := client.ChatComplete(ctx,
    []openrouter.Message{openrouter.CreateUserMessage("What shipped in Go 1.26?")},
    openrouter.WithModel("openai/gpt-4o:online"), // ":online" enables native web search
)

Or configure explicitly via plugin options — see examples/web_search/main.go and web_search.go for WebSearchEngine / WebSearchContextSize.

Tip: the :online suffix is a model-name modifier. Concatenate it; don't pass it as a separate option.