Previous value: -"Grounding tool usage (3.1 only)"New value: +"Grounding tool usage (requires a grounding-capable model; see [Model Guidance] in the tool description)"

Previous value: -"Optional (default: false). Request thought fields from Gemini (3.1 only). Thought content is returned in MCP response only when include_metadata=true."New value: +"Optional (default: false). Request thought fields from Gemini (thinking-capable models only). Thought content is returned in MCP response only when include_metadata=true."

Previous value: -"Flash3.1"New value: +"NanoBanana2.1"

Previous value: -"Model tier to use for generation (see tool description for details; \"flash\" and \"pro\" are aliases for Flash2.5 and Pro3; \"Lite3.1\" is the low-latency Nano Banana 2 Lite model, 1K-only, no grounding)"New value: +"Model tier to use for generation (default: NanoBanana2.1; see tool description for details; \"flash\" resolves to NanoBanana2.1, \"pro\" to Pro3; \"Lite3.1\" is the low-latency Nano Banana 2 Lite model, 1K-only, no grounding; \"Flash3.1\" is deprecated — Google shuts it down on October 29, 2026)"

Previous value: -[
-  "Flash3.1",
-  "Lite3.1",
-  "Flash2.5",
-  "Pro3",
-  "flash",
-  "pro"
-]New value: +[
+  "NanoBanana2.1",
+  "Flash3.1",
+  "Lite3.1",
+  "Flash2.5",
+  "Pro3",
+  "flash",
+  "pro"
+]

Previous value: -"Gemini generation source resolution (optional in normal mode, required when noresize=true). In normal mode, the final image is resized to the requested pixel size after generation."New value: +"Gemini generation source resolution: 1K, 2K, and 4K (optional in normal mode, required when noresize=true; 0.5K was removed in v1.6.0). In normal mode, the final image is resized to the requested pixel size after generation."

Removed value: -[
-  "0.5K",
-  "1K",
-  "2K",
-  "4K"
-]

Previous value: -"Reference images for style guidance (Flash2.5: max 3, others: max 14)"New value: +"Reference images for style guidance (max 14 files; per-model limits are enforced automatically)"

Previous value: -"minimal"New value: +"medium"

Previous value: -"Thinking mode (3.1 only)"New value: +"Thinking level: minimal, medium, high (default: medium, matching NanoBanana2.1's model default; requires a thinking-capable model — NanoBanana2.1 accepts all three levels, Flash3.1/Pro3 accept minimal/high and fall back to their own default otherwise)"

Previous value: -[
-  "minimal",
-  "high"
-]New value: +[
+  "minimal",
+  "medium",
+  "high"
+]

Removed value: -[
-  {
-    "type": "string"
-  },
-  {
-    "type": "null"
-  }
-]

Added value: +[
+  "string",
+  "null"
+]

Added value: +{
+  "description": "Gemini aspect ratio to use directly when noresize=true. Ignored in normal resize mode.",
+  "enum": [
+    "1:1",
+    "2:3",
+    "3:2",
+    "3:4",
+    "4:3",
+    "4:5",
+    "5:4",
+    "9:16",
+    "16:9",
+    "21:9",
+    "1:4",
+    "4:1",
+    "1:8",
+    "8:1"
+  ],
+  "type": "string"
+}

Previous value: -"Model tier to use for generation (see tool description for details; \"flash\" and \"pro\" are aliases for Flash2.5 and Pro3)"New value: +"Model tier to use for generation (see tool description for details; \"flash\" and \"pro\" are aliases for Flash2.5 and Pro3; \"Lite3.1\" is the low-latency Nano Banana 2 Lite model, 1K-only, no grounding)"

Previous value: -[
-  "Flash3.1",
-  "Flash2.5",
-  "Pro3",
-  "flash",
-  "pro"
-]New value: +[
+  "Flash3.1",
+  "Lite3.1",
+  "Flash2.5",
+  "Pro3",
+  "flash",
+  "pro"
+]

Added value: +{
+  "default": false,
+  "description": "Skip post-generation resizing and return Gemini native dimensions directly. When true, provide aspectRatio and output_resolution instead of outputWidth/outputHeight.",
+  "type": "boolean"
+}

Previous value: -"Output image height in pixels. The image will be generated using the closest supported Gemini aspect ratio and resolution, then resized to this height. To avoid cropping or padding, set width and height to match a supported aspect ratio (see tool description)."New value: +"Output image height in pixels. Required unless noresize=true. In normal mode, the image will be generated using the closest supported Gemini aspect ratio and resolution, then resized to this height."

Previous value: -"Output directory path (MUST be an absolute path when outputType is file or combine)"New value: +"Output directory path (MUST be an absolute path when outputType is file or combine). In Claude Desktop on Windows, use the FileSystem extension to choose or prepare a writable absolute path such as C:\\temp."

Previous value: -"Output format: file=file only, base64=base64 only, combine=both"New value: +"Output format: file=file only, base64=base64 only, combine=both. In Claude Desktop, prefer file for medium or large images to avoid context-size limits; use base64 only for small previews."

Previous value: -"Output image width in pixels. The image will be generated using the closest supported Gemini aspect ratio and resolution, then resized to this width. To avoid cropping or padding, set width and height to match a supported aspect ratio (see tool description)."New value: +"Output image width in pixels. Required unless noresize=true. In normal mode, the image will be generated using the closest supported Gemini aspect ratio and resolution, then resized to this width."

Previous value: -"Gemini generation source resolution (optional; normally auto-calculated from pixel size. Set only to override. Final image is resized to requested pixel size.)"New value: +"Gemini generation source resolution (optional in normal mode, required when noresize=true). In normal mode, the final image is resized to the requested pixel size after generation."

Removed value: -false

Previous value: -"Absolute path to reference image file (.png, .jpg, .jpeg, .webp)"New value: +"Absolute path to reference image file (.png, .jpg, .jpeg, .webp). In Claude Desktop on Windows, use the FileSystem extension to locate the file and pass its Windows absolute path."

Added value: +[
+  {
+    "type": "string"
+  },
+  {
+    "type": "null"
+  }
+]

Removed value: -[
-  "string",
-  "null"
-]

Previous value: -[
-  "prompt",
-  "outputFileName",
-  "outputWidth",
-  "outputHeight"
-]New value: +[
+  "prompt",
+  "outputFileName"
+]