Use xAI web search with Grok 4.3

by xAIWeb search

Grok 4.3 has its own web search on 4 of its 5 routes, and auto uses it. On every other route and endpoint Opper's engine runs the search.

UsexAI web searchwithin

Add xAI web search to Grok 4.3

Set up with agents

Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.

Get your API key

In your code

1curl https://api.opper.ai/v3/compat/chat/completions \
2  -H "Authorization: Bearer $OPPER_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{"model": "xai/grok-4.3",
5       "messages": [{"role": "user", "content": "What changed in the news today?"}],
6       "tools": [{"type": "opper:web_search"}]}'

Where you can run it

Grok 4.3 runs xAI web search on the routes below. Some routes also sell priority processing: the same model at another price, picked per request with service_tier. How service tiers work.

Provider	Region	Training	Input	Output	Cache read
xAI	EU	No	$1.25	$2.50	$0.20
xAI	EU	No	$1.25	$2.50	$0.20
xAI	Multi	No	$1.25	$2.50	$0.20
xAI	Multi	No	$1.25	$2.50	$0.20

The model

Grok 4.3

by xAI

Grok 4.3 by xAI combines always-on reasoning with a 1M context window, native vision, and agentic tool calling in one model.

Available on

AzurexAI

Pricing from$1.25/ 1M input$2.50/ 1M output$0.20/ 1M cache read1Mcontext

Privacy

ZDR
Training: No
Region: Multi, EU

Use xAI web search with other models

Step-by-step setup for xAI web search on each of these models through Opper.

Grok 4.7 Grok 4.6 Grok 4.5 Grok 3 Mini Grok 3 Mini Beta Grok Build 0.1 See all 700+ models

More tools on Opper

Jina search

Opper's default search engine for models without their own. Search processing stays in the EU.

Search"engine": "jina"

SearchBase

The Swedish open-source search API, on Europe's own Staan index and hosted in the EU.

Search"engine": "searchbase"

Exa search

Exa's search engine built for AI, on any tool-calling model through one tool entry. US-based.

Search"engine": "exa"