To use Fireworks AI’s models (Thinking mode, DeepSeek R1, and DeepSeek V3 New) in Xcode with Alex Sidebar without paying a subscription for Alex, you’ll need a Fireworks AI API key. Here’s how to get one:
  1. Visit Fireworks AI’s Console
  2. Create an account or sign in if you already have one
  3. Once logged in, navigate to the API Keys page in your account settings
  4. Click “Create API Key”
  5. Give your key a name (e.g., “Alex Sidebar”) and create it
  6. Copy the API key - make sure to save it somewhere secure as you won’t be able to see it again
  7. In Alex Sidebar:
    • Open Settings (⚙️)
    • Select “Models” at the bottom of the page
    • Paste your Fireworks AI API key in the Fireworks AI text field
Keep your API key secure and never share it publicly. If you suspect your key has been compromised, you should immediately rotate it in the Fireworks AI Console.

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Usage & Billing

  • Fireworks AI bills based on the number of tokens used
  • You can monitor your usage in the Fireworks AI Console
  • Set up billing alerts to avoid unexpected charges
  • New accounts typically come with some free credits to get started
For more information about Fireworks AI’s pricing and usage, visit Fireworks AI’s pricing page.
Enabling Fireworks AI does not give you access to all of Alex’s features. To enable codebase indexing, follow the VoyageAI API Key Instructions, and to enable Claude models, follow the Anthropic API Key Instructions.
For other models like GPT 4o and the o-series (o1, o3, o4-mini), follow the OpenAI API Key Instructions.