First, log into the Mistral AI console (https://console.mistral.ai/).
Before proceeding, you may need to setup the appropriate billing information.
Next, select API Keys, create a new key, and place it into your configuration file.
For example:
models: { "Mistral Medium with Streaming": { provider: "mistral", model: "mistral-medium", stream: true, apiKey: "......" } }