diff --git a/gptel-ollama.el b/gptel-ollama.el
index f5e5fd1..ee15c12 100644
--- a/gptel-ollama.el
+++ b/gptel-ollama.el
@@ -121,7 +121,7 @@ Example:
 (gptel-make-ollama
   \"Ollama\"
   :host \"localhost:11434\"
-  :models '(\"mistral:latest\")
+  :models \\='(\"mistral:latest\")
   :stream t)"
   (let ((backend (gptel--make-ollama
                   :name name
diff --git a/gptel-openai.el b/gptel-openai.el
index b8bcd42..188b7d3 100644
--- a/gptel-openai.el
+++ b/gptel-openai.el
@@ -24,6 +24,22 @@
 
 ;;; Code:
 (require 'cl-generic)
+(require 'map)
+
+(defvar gptel-model)
+(defvar gptel-stream)
+(defvar gptel-use-curl)
+(defvar gptel-backend)
+(defvar gptel-temperature)
+(defvar gptel-max-tokens)
+(defvar gptel--system-message)
+(defvar gptel--known-backends)
+(defvar json-object-type)
+
+(declare-function gptel--get-api-key "gptel")
+(declare-function prop-match-value "text-property-search")
+(declare-function text-property-search-backward "text-property-search")
+(declare-function json-read "json")
 
 ;;; Common backend struct for LLM support
 (cl-defstruct
@@ -174,10 +190,11 @@ Example:
 (gptel-make-azure
  \"Azure-1\"
  :protocol \"https\"
- :host \"YOUR_RESOURCE_NAME.openai.azure.com\"
- :endpoint \"/openai/deployments/YOUR_DEPLOYMENT_NAME/completions?api-version=2023-05-15\"
+ :host \"RESOURCE_NAME.openai.azure.com\"
+ :endpoint
+ \"/openai/deployments/DEPLOYMENT_NAME/completions?api-version=2023-05-15\"
  :stream t
- :models '(\"gpt-3.5-turbo\" \"gpt-4\"))"
+ :models \\='(\"gpt-3.5-turbo\" \"gpt-4\"))"
   (let ((backend (gptel--make-openai
                   :name name
                   :host host
@@ -230,7 +247,7 @@ Example:
  \"GPT4All\"
  :protocol \"http\"
  :host \"localhost:4891\"
- :models '(\"mistral-7b-openorca.Q4_0.gguf\"))")
+ :models \\='(\"mistral-7b-openorca.Q4_0.gguf\"))")
 
 (provide 'gptel-openai)
 ;;; gptel-backends.el ends here
diff --git a/gptel-transient.el b/gptel-transient.el
index 00e58e8..bb1e3f1 100644
--- a/gptel-transient.el
+++ b/gptel-transient.el
@@ -361,6 +361,7 @@ will get progressively longer!"
   (let ((stream gptel-stream)
         (in-place (and (member "i" args) t))
         (output-to-other-buffer-p)
+        (backend gptel-backend)
         (backend-name (gptel-backend-name gptel-backend))
         (buffer) (position)
         (callback) (gptel-buffer-name)
@@ -398,7 +399,10 @@ will get progressively longer!"
                        (gptel--get-api-key)
                      ((error user-error)
                       (setq gptel-api-key
-                            (read-passwd "OpenAI API key: "))))
+                            (read-passwd
+                             (format "%s API key: "
+                                     (gptel-backend-name
+                                      gptel-backend))))))
                    (or prompt
                        (if (use-region-p)
                            (buffer-substring-no-properties (region-beginning)
@@ -413,6 +417,7 @@ will get progressively longer!"
                             (point))
                           (point))))))
       (with-current-buffer buffer
+        (setq gptel-backend backend)
         (gptel--update-header-line " Waiting..." 'warning)
         (setq position (point)))
       (setq output-to-other-buffer-p t))
diff --git a/gptel.el b/gptel.el
index 3116753..a72bca3 100644
--- a/gptel.el
+++ b/gptel.el
@@ -110,6 +110,7 @@
 (require 'json)
 (require 'map)
 (require 'text-property-search)
+(require 'cl-generic)
 (require 'gptel-openai)
 
 (defgroup gptel nil