Help configuring openrouter (claude sonnet)

[deliciouslytyped]

Hi everyone, I'm new to using these kinds of tools.

I downloaded Zed for windows with the nightly builds provided here #15159 , and I can't figure out how to configure using Claude 3.5 Sonnet via OpenRouter. I don't have the right side assistant panel, and I guess I can't seem to get the JSON configuration right. I also don't have the "assistant: reset keys" item in the ctrl-shift-p menu, for resetting API keys.
Starting Zed with the OPENAI_API_KEY environment variable set also doesn't seem to have helped.
Can someone help me set this up?

Is there any way to specify the API key in the JSON configuration or something?

I found this existing information:
#16576
#13276

I tried to do something like this but nothing seems to have changed, I still don't have an assistant panel:

// Zed settings
//
// For information on how to configure Zed, see the Zed
// documentation: https://zed.dev/docs/configuring-zed
//
// To see all of Zed's default settings without changing your
// custom settings, run `zed: open default settings` from the
// command palette (cmd-shift-p / ctrl-shift-p)
{
  "features": {
    "inline_completion_provider": "copilot"
  },
  "telemetry": {
    "metrics": false,
    "diagnostics": false
  },
  "ui_font_size": 16,
  "buffer_font_size": 16,
  "theme": {
    "mode": "system",
    "light": "One Light",
    "dark": "One Dark"
  },
  "assistant": {
    "enabled": true,
    "default_model": {
      "provider": "openai",
      "model": "anthropic/claude-3.5-sonnet"
    },
    "version": "2"
  },
  "language_models": {
    "openai": {
      "version": "1",
      "api_url": "https://openrouter.ai/api/v1",
      "available_models": [
        {
          "name": "anthropic/claude-3.5-sonnet",
          "max_tokens": 200000
        }
      ]
    }
  }
}

This is what my editor looks like: