Readme: Add Sambanova documentation (#803)

* README.org: Add Sambanova documentation.

Author: wlauppe

README.org

@@ -8,31 +8,32 @@
 gptel is a simple Large Language Model chat client for Emacs, with support for multiple models and backends.  It works in the spirit of Emacs, available at any time and uniformly in any buffer.
 
 #+html: <div align="center">
-| LLM Backend        | Supports | Requires                   |
-|--------------------+----------+----------------------------|
-| ChatGPT            | ✓        | [[https://platform.openai.com/account/api-keys][API key]]                    |
-| Anthropic (Claude) | ✓        | [[https://www.anthropic.com/api][API key]]                    |
-| Gemini             | ✓        | [[https://makersuite.google.com/app/apikey][API key]]                    |
-| Ollama             | ✓        | [[https://ollama.ai/][Ollama running locally]]     |
-| Llama.cpp          | ✓        | [[https://github.com/ggerganov/llama.cpp/tree/master/examples/server#quick-start][Llama.cpp running locally]]  |
-| Llamafile          | ✓        | [[https://github.com/Mozilla-Ocho/llamafile#quickstart][Local Llamafile server]]     |
-| GPT4All            | ✓        | [[https://gpt4all.io/index.html][GPT4All running locally]]    |
-| Kagi FastGPT       | ✓        | [[https://kagi.com/settings?p=api][API key]]                    |
-| Kagi Summarizer    | ✓        | [[https://kagi.com/settings?p=api][API key]]                    |
-| Azure              | ✓        | Deployment and API key     |
-| Groq               | ✓        | [[https://console.groq.com/keys][API key]]                    |
-| Mistral Le Chat    | ✓        | [[https://console.mistral.ai/api-keys][API key]]                    |
-| Perplexity         | ✓        | [[https://docs.perplexity.ai/docs/getting-started][API key]]                    |
-| OpenRouter         | ✓        | [[https://openrouter.ai/keys][API key]]                    |
-| together.ai        | ✓        | [[https://api.together.xyz/settings/api-keys][API key]]                    |
-| Anyscale           | ✓        | [[https://docs.endpoints.anyscale.com/][API key]]                    |
-| PrivateGPT         | ✓        | [[https://github.com/zylon-ai/private-gpt#-documentation][PrivateGPT running locally]] |
-| DeepSeek           | ✓        | [[https://platform.deepseek.com/api_keys][API key]]                    |
-| Cerebras           | ✓        | [[https://cloud.cerebras.ai/][API key]]                    |
-| Github Models      | ✓        | [[https://github.com/settings/tokens][Token]]                      |
-| Novita AI          | ✓        | [[https://novita.ai/model-api/product/llm-api?utm_source=github_gptel&utm_medium=github_readme&utm_campaign=link][Token]]                      |
-| xAI                | ✓        | [[https://console.x.ai?utm_source=github_gptel&utm_medium=github_readme&utm_campaign=link][API key]]                    |
-| Github CopilotChat | ✓        | Github account             |
+| LLM Backend          | Supports | Requires                   |
+|----------------------+----------+----------------------------|
+| ChatGPT              | ✓        | [[https://platform.openai.com/account/api-keys][API key]]                    |
+| Anthropic (Claude)   | ✓        | [[https://www.anthropic.com/api][API key]]                    |
+| Gemini               | ✓        | [[https://makersuite.google.com/app/apikey][API key]]                    |
+| Ollama               | ✓        | [[https://ollama.ai/][Ollama running locally]]     |
+| Llama.cpp            | ✓        | [[https://github.com/ggerganov/llama.cpp/tree/master/examples/server#quick-start][Llama.cpp running locally]]  |
+| Llamafile            | ✓        | [[https://github.com/Mozilla-Ocho/llamafile#quickstart][Local Llamafile server]]     |
+| GPT4All              | ✓        | [[https://gpt4all.io/index.html][GPT4All running locally]]    |
+| Kagi FastGPT         | ✓        | [[https://kagi.com/settings?p=api][API key]]                    |
+| Kagi Summarizer      | ✓        | [[https://kagi.com/settings?p=api][API key]]                    |
+| Azure                | ✓        | Deployment and API key     |
+| Groq                 | ✓        | [[https://console.groq.com/keys][API key]]                    |
+| Mistral Le Chat      | ✓        | [[https://console.mistral.ai/api-keys][API key]]                    |
+| Perplexity           | ✓        | [[https://docs.perplexity.ai/docs/getting-started][API key]]                    |
+| OpenRouter           | ✓        | [[https://openrouter.ai/keys][API key]]                    |
+| together.ai          | ✓        | [[https://api.together.xyz/settings/api-keys][API key]]                    |
+| Anyscale             | ✓        | [[https://docs.endpoints.anyscale.com/][API key]]                    |
+| PrivateGPT           | ✓        | [[https://github.com/zylon-ai/private-gpt#-documentation][PrivateGPT running locally]] |
+| DeepSeek             | ✓        | [[https://platform.deepseek.com/api_keys][API key]]                    |
+| Sambanova (Deepseek) | ✓        | [[https://cloud.sambanova.ai/apis][API key]]                    |
+| Cerebras             | ✓        | [[https://cloud.cerebras.ai/][API key]]                    |
+| Github Models        | ✓        | [[https://github.com/settings/tokens][Token]]                      |
+| Novita AI            | ✓        | [[https://novita.ai/model-api/product/llm-api?utm_source=github_gptel&utm_medium=github_readme&utm_campaign=link][Token]]                      |
+| xAI                  | ✓        | [[https://console.x.ai?utm_source=github_gptel&utm_medium=github_readme&utm_campaign=link][API key]]                    |
+| Github CopilotChat   | ✓        | Github account             |
 #+html: </div>
 
 *General usage*: ([[https://www.youtube.com/watch?v=bsRnh_brggM][YouTube Demo]])
@@ -110,6 +111,7 @@ gptel uses Curl if available, but falls back to the built-in url-retrieve to wor
       - [[#openrouter][OpenRouter]]
       - [[#privategpt][PrivateGPT]]
       - [[#deepseek][DeepSeek]]
+      - [[#sambanova-deepseek][Sambanova (DeepSeek)]]
       - [[#cerebras][Cerebras]]
       - [[#github-models][Github Models]]
       - [[#novita-ai][Novita AI]]
@@ -748,6 +750,33 @@ The above code makes the backend available to select.  If you want it to be the
 
 #+html: </details>
 #+html: <details><summary>
+
+**** Sambanova (Deepseek)
+#+html: </summary>
+Sambanova offers various LLMs through their Samba Nova Cloud offering, with Deepseek-R1 being one of them. The token speed for Deepseek R1 via Sambanova is about 6 times faster than when accessed through deepseek.com 
+
+Register a backend with
+#+begin_src emacs-lisp
+(gptel-make-openai "Sambanova"        ;Any name you want
+  :host "api.sambanova.ai"
+  :endpoint "/v1/chat/completions"
+  :stream t                          ;for streaming responses
+  :key "your-api-key"               ;can be a function that returns the key
+  :models '(DeepSeek-R1))
+#+end_src
+
+You can pick this backend from the menu when using gptel (see [[#usage][Usage]]).
+
+***** (Optional) Set as the default gptel backend
+The code aboves makes the backend available for selection.  If you want it to be the default backend for gptel, you can set this as the value of =gptel-backend=.  Add these two lines to your configuration: 
+#+begin_src emacs-lisp
+;; OPTIONAL configuration
+  (setq gptel-model 'DeepSeek-R1)
+  (setq gptel-backend (gptel-get-backend "Sambanova"))
+#+end_src
+#+html: </details>
+#+html: <details><summary>
+
 **** Cerebras
 #+html: </summary>