diff --git a/app/src/main/java/eu/faircode/email/FragmentCompose.java b/app/src/main/java/eu/faircode/email/FragmentCompose.java
index 688a294c0a..7f788f3a2c 100644
--- a/app/src/main/java/eu/faircode/email/FragmentCompose.java
+++ b/app/src/main/java/eu/faircode/email/FragmentCompose.java
@@ -2790,8 +2790,9 @@ public class FragmentCompose extends FragmentBase {
 
                 SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
                 String model = prefs.getString("gemini_model", "gemini-pro");
+                float temperature = prefs.getFloat("gemini_temperature", 0.5f);
 
-                return Gemini.generate(context, model, new String[]{Gemini.truncateParagraphs(body)});
+                return Gemini.generate(context, model, new String[]{Gemini.truncateParagraphs(body)}, temperature);
             }
 
             @Override
diff --git a/app/src/main/java/eu/faircode/email/FragmentDialogSummarize.java b/app/src/main/java/eu/faircode/email/FragmentDialogSummarize.java
index 4aa3ef593a..b4e57f40c8 100644
--- a/app/src/main/java/eu/faircode/email/FragmentDialogSummarize.java
+++ b/app/src/main/java/eu/faircode/email/FragmentDialogSummarize.java
@@ -106,9 +106,10 @@ public class FragmentDialogSummarize extends FragmentDialogBase {
                     return sb.toString();
                 } else if (Gemini.isAvailable(context)) {
                     String model = prefs.getString("gemini_model", "gemini-pro");
+                    float temperature = prefs.getFloat("gemini_temperature", 0.5f);
                     String prompt = prefs.getString("gemini_summarize", Gemini.SUMMARY_PROMPT);
 
-                    String[] result = Gemini.generate(context, model, new String[]{prompt, text});
+                    String[] result = Gemini.generate(context, model, new String[]{prompt, text}, temperature);
                     return TextUtils.join("\n", result);
                 }
 
diff --git a/app/src/main/java/eu/faircode/email/FragmentOptionsIntegrations.java b/app/src/main/java/eu/faircode/email/FragmentOptionsIntegrations.java
index 2638be48fc..0bbeb647c6 100644
--- a/app/src/main/java/eu/faircode/email/FragmentOptionsIntegrations.java
+++ b/app/src/main/java/eu/faircode/email/FragmentOptionsIntegrations.java
@@ -90,6 +90,8 @@ public class FragmentOptionsIntegrations extends FragmentBase implements SharedP
     private EditText etGemini;
     private TextInputLayout tilGemini;
     private EditText etGeminiModel;
+    private TextView tvGeminiTemperature;
+    private SeekBar sbGeminiTemperature;
     private EditText etGeminiSummarize;
     private ImageButton ibGemini;
 
@@ -106,7 +108,7 @@ public class FragmentOptionsIntegrations extends FragmentBase implements SharedP
             "vt_enabled", "vt_apikey",
             "send_enabled", "send_host", "send_dlimit", "send_tlimit",
             "openai_enabled", "openai_uri", "openai_apikey", "openai_model", "openai_temperature", "openai_moderation", "openai_summarize",
-            "gemini_enabled", "gemini_uri", "gemini_apikey", "gemini_model", "gemini_summarize"
+            "gemini_enabled", "gemini_uri", "gemini_apikey", "gemini_model", "gemini_temperature", "gemini_summarize"
     ));
 
     @Override
@@ -162,6 +164,8 @@ public class FragmentOptionsIntegrations extends FragmentBase implements SharedP
         etGemini = view.findViewById(R.id.etGemini);
         tilGemini = view.findViewById(R.id.tilGemini);
         etGeminiModel = view.findViewById(R.id.etGeminiModel);
+        tvGeminiTemperature = view.findViewById(R.id.tvGeminiTemperature);
+        sbGeminiTemperature = view.findViewById(R.id.sbGeminiTemperature);
         etGeminiSummarize = view.findViewById(R.id.etGeminiSummarize);
         ibGemini = view.findViewById(R.id.ibGemini);
 
@@ -556,6 +560,7 @@ public class FragmentOptionsIntegrations extends FragmentBase implements SharedP
             public void onCheckedChanged(CompoundButton compoundButton, boolean checked) {
                 prefs.edit().putBoolean("gemini_enabled", checked).apply();
                 etGeminiModel.setEnabled(checked);
+                sbGeminiTemperature.setEnabled(checked);
                 etGeminiSummarize.setEnabled(checked);
                 if (checked)
                     swOpenAi.setChecked(false);
@@ -634,6 +639,24 @@ public class FragmentOptionsIntegrations extends FragmentBase implements SharedP
             }
         });
 
+        sbGeminiTemperature.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
+            @Override
+            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
+                float temp = progress / 20f;
+                prefs.edit().putFloat("gemini_temperature", temp).apply();
+            }
+
+            @Override
+            public void onStartTrackingTouch(SeekBar seekBar) {
+                // Do nothing
+            }
+
+            @Override
+            public void onStopTrackingTouch(SeekBar seekBar) {
+                // Do nothing
+            }
+        });
+
         etGeminiSummarize.setHint(Gemini.SUMMARY_PROMPT);
         etGeminiSummarize.addTextChangedListener(new TextWatcher() {
             @Override
@@ -780,6 +803,12 @@ public class FragmentOptionsIntegrations extends FragmentBase implements SharedP
             tilGemini.getEditText().setText(prefs.getString("gemini_apikey", null));
             etGeminiModel.setText(prefs.getString("gemini_model", null));
             etGeminiModel.setEnabled(swGemini.isChecked());
+
+            temperature = prefs.getFloat("gemini_temperature", 0.5f);
+            tvGeminiTemperature.setText(getString(R.string.title_advanced_openai_temperature, NF.format(temperature)));
+            sbGeminiTemperature.setProgress(Math.round(temperature * 20));
+            sbGeminiTemperature.setEnabled(swGemini.isChecked());
+
             etGeminiSummarize.setText(prefs.getString("gemini_summarize", null));
             etGeminiSummarize.setEnabled(swGemini.isChecked());
         } catch (Throwable ex) {
diff --git a/app/src/main/java/eu/faircode/email/Gemini.java b/app/src/main/java/eu/faircode/email/Gemini.java
index ea731db039..784bd6cce7 100644
--- a/app/src/main/java/eu/faircode/email/Gemini.java
+++ b/app/src/main/java/eu/faircode/email/Gemini.java
@@ -40,6 +40,8 @@ import java.util.Objects;
 
 public class Gemini {
     // https://ai.google.dev/models/gemini
+    static final String MODEL = "model";
+    static final String USER = "user";
     static final String SUMMARY_PROMPT = "Summarize the following text:";
 
     private static final int MAX_GEMINI_LEN = 4000; // characters
@@ -57,7 +59,7 @@ public class Gemini {
                 (!TextUtils.isEmpty(apikey) || !Objects.equals(getUri(context), BuildConfig.GEMINI_ENDPOINT)));
     }
 
-    static String[] generate(Context context, String model, String[] texts) throws JSONException, IOException {
+    static String[] generate(Context context, String model, String[] texts, float temperature) throws JSONException, IOException {
         JSONArray jpart = new JSONArray();
         for (String text : texts) {
             JSONObject jtext = new JSONObject();
@@ -67,10 +69,17 @@ public class Gemini {
 
         JSONObject jcontent0 = new JSONObject();
         jcontent0.put("parts", jpart);
+        jcontent0.put("role", USER);
         JSONArray jcontents = new JSONArray();
         jcontents.put(jcontent0);
+
+        // https://ai.google.dev/api/python/google/generativeai/GenerationConfig
+        JSONObject jconfig = new JSONObject();
+        jconfig.put("temperature", temperature);
+
         JSONObject jrequest = new JSONObject();
         jrequest.put("contents", jcontents);
+        jrequest.put("generationConfig", jconfig);
 
         String path = "models/" + Uri.encode(model) + ":generateContent";
 
diff --git a/app/src/main/res/layout/fragment_options_integrations.xml b/app/src/main/res/layout/fragment_options_integrations.xml
index 8869a0b4a4..402d8669ed 100644
--- a/app/src/main/res/layout/fragment_options_integrations.xml
+++ b/app/src/main/res/layout/fragment_options_integrations.xml
@@ -750,6 +750,31 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@id/tvGeminiModel" />
 
+                <TextView
+                    android:id="@+id/tvGeminiTemperature"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="12dp"
+                    android:layout_marginTop="12dp"
+                    android:layout_marginEnd="48dp"
+                    android:text="@string/title_advanced_openai_temperature"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/etGeminiModel" />
+
+                <SeekBar
+                    android:id="@+id/sbGeminiTemperature"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginStart="12dp"
+                    android:max="20"
+                    android:min="0"
+                    android:progress="10"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvGeminiTemperature" />
+
                 <TextView
                     android:id="@+id/tvGeminiSummarize"
                     android:layout_width="wrap_content"
@@ -759,7 +784,7 @@
                     android:text="@string/title_advanced_summarize_prompt"
                     android:textAppearance="@style/TextAppearance.AppCompat.Small"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@id/etGeminiModel" />
+                    app:layout_constraintTop_toBottomOf="@id/sbGeminiTemperature" />
 
                 <EditText
                     android:id="@+id/etGeminiSummarize"