> ## Documentation Index
> Fetch the complete documentation index at: https://browseruse-0aece648-codex-clarify-browser-infrastructure.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# FAQ

> Common questions and solutions.

## Which model should I use?

* **GPT-5.6 Luna** (`gpt-5.6-luna`) — the default starting point.
* **Claude Opus 5** (`claude-opus-5`) — an option for difficult, long-horizon work.
* **Grok 4.5** (`grok-4.5`) — a general-purpose alternative.
* **GPT-5.6 Sol** (`gpt-5.6-sol`) — an OpenAI option for complex tasks.
* **MiniMax M3** (`minimax-m3`) — another option for simple and high-volume tasks.

See [Models](/cloud/agent/models) for the V4 picker and
[pricing](https://browser-use.com/pricing) for current rates.

## How do I get the live browser URL?

The V4 run's `browser.ready` event contains `live_view_url`. Embed it in an iframe or open it in a browser.

```python theme={null}
from browser_use_sdk.v4 import BrowserUse

client = BrowserUse()
created = client.runs.create("Go to example.com")
client.runs.wait_for_completion(created.id)
events = client.runs.events(created.id, limit=100)
ready = next(event for event in events.events if event.type == "browser.ready")
print(ready.data["live_view_url"])
```

Poll events until `browser.ready` appears if you need the URL while the run is still active. See [Human in the loop](/cloud/agent/human-in-the-loop) for a complete flow.

## Getting blocked by a website

Stealth and proxies are active by default. If you're still getting blocked:

* **Use a profile** with logged-in cookies to bypass login walls.
* **Try a different proxy country** to match the target region.

If it still doesn't work, contact support inside the [Cloud Dashboard](https://cloud.browser-use.com) — send us a link to the page where you're getting blocked.

## Rate limited (429 errors)

The SDK auto-retries 429 responses with exponential backoff. If persistent, you may need more concurrent sessions — contact support.

<a id="v2-or-v4-—-which-should-i-use" />

## Which API interface should I use?

The V2, V3, and V4 references are all retained in these docs. See the
[developer overview](https://browser-use.com/developers) for the maintained
product map and guidance for new integrations.

V4 provides a run-focused API, conversation follow-ups, persistent workspaces,
turn-scoped file attachments, incremental events, per-run cost totals and cost
caps, and optional judgement. Compare those capabilities with the retained
[V3](/cloud/api-reference) and [V2](/cloud/api-v2-overview) references before
changing an existing integration.