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Pass model when you create a run. These are the models currently shown in the V4 agent UI: Prices are USD per 1 million tokens using Browser Use’s provider keys and include the platform markup. Grok 4.5 requests with 200k or more context use its higher long-context rate. Cache prices are for cache reads; cache writes can cost more.
MiniMax M3 is the default and the cheapest choice for simple tasks. Use Claude Opus 5 when maximum reasoning quality matters.

Bring your own key

Add an Anthropic, OpenAI, or Google key under Settings → API Keys → Bring Your Own Key. V4 automatically uses a matching project key for that provider; there is no use_own_key / useOwnKey request flag. With your own key, you pay the provider directly and Browser Use charges a 0.2× orchestration fee based on provider list token prices. If no matching key is configured, V4 uses Browser Use’s provider key and the rates in the table above. Grok 4.5 and MiniMax M3 currently use Browser Use-managed keys only.