> ## Documentation Index
> Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# WebSearchEngine

The search engine to use for web search.

## Example Usage

```typescript theme={null}
import { WebSearchEngine } from "@openrouter/sdk/models";

let value: WebSearchEngine = "exa";

// Open enum: unrecognized values are captured as Unrecognized<string>
```

## Values

```typescript theme={null}
"native" | "exa" | "firecrawl" | "parallel" | "perplexity" | Unrecognized<string>
```