Mistral Large 4 web search

Mistral Large 4 has no web search of its own, so Opper's engine adds it with one tool entry. Pick an EU route and pin Jina or Searchbase, and the model, the query and every page it reads stay in Europe.

UseWeb searchwithin

Add web search to Mistral Large 4

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": "mistral:eu/mistral-large-4",
5       "messages": [{"role": "user", "content": "What changed in the news today?"}],
6       "tools": [{"type": "opper:web_search", "engine": "jina"}]}'

Where you can run it

Mistral Large 4 runs on the routes below. Route only to EU providers and pin "engine": "jina" or "searchbase" when your data has to stay in Europe.

Provider	Region	Zero data retention	Training	Input	Output	Cache read
Mistral	EU		No	$0.75	$2.30	$0.08
Mistral	Multi		No	$0.68	$2.09	$0.07

The model

Mistral Large 4

by Mistral

Mistral Large 4, Mistral AI's flagship open-weight model: a 1T-parameter mixture of experts (49B active) with native image input, tool use, optional reasoning and long context.