docs: add Groq provider page

docs/providers/groq.md

@@ -0,0 +1,96 @@
+---
+title: "Groq"
+summary: "Groq setup (auth + model selection)"
+read_when:
+  - You want to use Groq with OpenClaw
+  - You need the API key env var or CLI auth choice
+---
+
+# Groq
+
+[Groq](https://groq.com) provides ultra-fast inference on open-source models
+(Llama, Gemma, Mistral, and more) using custom LPU hardware. OpenClaw connects
+to Groq through its OpenAI-compatible API.
+
+- Provider: `groq`
+- Auth: `GROQ_API_KEY`
+- API: OpenAI-compatible
+
+## Quick start
+
+1. Get an API key from [console.groq.com/keys](https://console.groq.com/keys).
+
+2. Set the API key:
+
+```bash
+export GROQ_API_KEY="gsk_..."
+```
+
+3. Set a default model:
+
+```json5
+{
+  agents: {
+    defaults: {
+      model: { primary: "groq/llama-3.3-70b-versatile" },
+    },
+  },
+}
+```
+
+## Config file example
+
+```json5
+{
+  env: { GROQ_API_KEY: "gsk_..." },
+  agents: {
+    defaults: {
+      model: { primary: "groq/llama-3.3-70b-versatile" },
+    },
+  },
+}
+```
+
+## Audio transcription
+
+Groq also provides fast Whisper-based audio transcription. When configured as a
+media-understanding provider, OpenClaw uses Groq's `whisper-large-v3-turbo`
+model to transcribe voice messages.
+
+```json5
+{
+  media: {
+    understanding: {
+      audio: {
+        models: [{ provider: "groq" }],
+      },
+    },
+  },
+}
+```
+
+## Environment note
+
+If the Gateway runs as a daemon (launchd/systemd), make sure `GROQ_API_KEY` is
+available to that process (for example, in `~/.openclaw/.env` or via
+`env.shellEnv`).
+
+## Available models
+
+Groq's model catalog changes frequently. Run `openclaw models list | grep groq`
+to see currently available models, or check
+[console.groq.com/docs/models](https://console.groq.com/docs/models).
+
+Popular choices include:
+
+- **Llama 3.3 70B Versatile** - general-purpose, large context
+- **Llama 3.1 8B Instant** - fast, lightweight
+- **Gemma 2 9B** - compact, efficient
+- **Mixtral 8x7B** - MoE architecture, strong reasoning
+
+## Links
+
+- [Groq Console](https://console.groq.com)
+- [API Documentation](https://console.groq.com/docs)
+- [Model List](https://console.groq.com/docs/models)
+- [Pricing](https://groq.com/pricing)

docs/providers/index.md

@@ -31,6 +31,7 @@ Looking for chat channel docs (WhatsApp/Telegram/Discord/Slack/Mattermost (plugi
 - [Cloudflare AI Gateway](/providers/cloudflare-ai-gateway)
 - [GLM models](/providers/glm)
 - [Google (Gemini)](/providers/google)
+- [Groq (LPU inference)](/providers/groq)
 - [Hugging Face (Inference)](/providers/huggingface)
 - [Kilocode](/providers/kilocode)
 - [LiteLLM (unified gateway)](/providers/litellm)