📝 docs: add BetterToken custom endpoint

content/docs/configuration/librechat_yaml/ai_endpoints/bettertoken.mdx

@@ -0,0 +1,38 @@
+---
+title: BetterToken
+icon: Plug
+description: Configure BetterToken as a custom endpoint in LibreChat.
+---
+
+BetterToken is a pay-as-you-go API gateway that serves Claude, GPT, DeepSeek, Kimi, GLM, MiniMax and Qwen models through one OpenAI-compatible API, used in LibreChat as a custom endpoint.
+
+## Get an API key
+
+[Create a BetterToken account](https://bettertoken.ai/register), add balance, and create an API key. Add it to your `.env` file:
+
+```bash filename=".env"
+BETTERTOKEN_API_KEY=your-api-key
+```
+
+## Configuration
+
+Add the endpoint to the `custom` list under `endpoints` in your `librechat.yaml`. If your file already has an `endpoints.custom` list, paste only the `- name:` entry into it, keeping the same indentation:
+
+```yaml filename="librechat.yaml"
+endpoints:
+  custom:
+    - name: "BetterToken"
+      apiKey: "${BETTERTOKEN_API_KEY}"
+      baseURL: "https://bettertoken.ai/v1"
+      models:
+        default: [
+          "claude-sonnet-5-5", "deepseek-flash", "kimi-k3"
+          ]
+        fetch: true
+      titleConvo: true
+      titleModel: "deepseek-flash"
+      modelDisplayLabel: "BetterToken"
+```
+
+- `fetch: true` loads the models available to your key from `https://bettertoken.ai/v1/models`.
+- Current model IDs and per-token prices are listed on the [BetterToken pricing page](https://bettertoken.ai/pricing).

content/docs/configuration/librechat_yaml/ai_endpoints/meta.json

@@ -5,6 +5,7 @@
     "anyscale",
     "apipie",
     "azure",
+    "bettertoken",
     "cloudflare",
     "cohere",
     "databricks",