Nano Banana 2.1 Precise Image Editing Guide for Gemini

Google released Nano Banana 2.1 on 6 October 2026. The update improves visual quality, text rendering, subject consistency, and targeted editing compared with Nano Banana 2. Paid Google AI plan users get access to it in the Gemini app. Free users continue with Nano Banana 2.

You can change one detail in a photo—such as the colour of a sofa or the text on a sign—while leaving the rest of the scene intact. The model handles up to 14 reference images and supports 1K, 2K, and 4K output.

This guide walks through access, prompt structure, and practical editing steps. It draws only from Google’s announcements and the Gemini app interface.

What Nano Banana 2.1 Adds

Nano Banana 2.1 is the high-efficiency image model based on Gemini 3.6 Flash. It is the successor to Nano Banana 2 (Gemini 3.1 Flash Image). Google reports higher preference scores on overall quality, infographic design, and multi-reference editing.

Key improvements include:

• Better subject and character consistency across turns.
• Clearer text in signs, posters, and labels.
• Mask-based and area-targeted edits.
• Support for up to 14 reference images (up to four characters and ten objects).
• Grounding with Google Search and image search when enabled.
• Output at 1K, 2K, or 4K with expanded aspect ratios including panoramas.

In the Gemini app, paid subscribers (Google AI Plus, Pro, or Ultra) receive Nano Banana 2.1 by default for image creation and editing. Free accounts stay on Nano Banana 2. You can still regenerate an image with the higher Pro model if your plan allows it.

Access Nano Banana 2.1 in Gemini

Open the Gemini app on mobile or go to gemini.google.com on the web. Sign in with your Google account.

To create or edit an image:

1. Tap the tools menu or the banana icon labelled Create images.
2. Enter a text prompt, or upload one or more photos from your device or Google Photos.
3. Submit the request. The model generates or edits the image.
4. For further changes, open the result and tap Chat, or use the Sketch and Text tools on the image itself.

Editing is available only to users 18 and older. If you reach daily limits on the free model, paid plans raise the quota.

The interface streams results progressively. Text appears first, then the image. You can continue the conversation to refine the edit without starting a new chat.

Structure Prompts for Precise Edits

Good edits name one change and list what must stay the same. Vague requests often alter more of the scene than intended.

Use this pattern:

• State the image you are editing.
• Name the single change (colour, object, text, lighting).
• List the elements that must remain unchanged (people, layout, lighting, camera angle).
• Optionally describe how the change should blend with the existing light and style.

Example prompt:

“Edit the attached photo. Change only the sofa colour from grey to rust orange velvet. Keep the wooden frame, cushions shape, floor, wall, plants, and lighting exactly the same.”

Another example for removal:

“Remove the yellow sign near the pool and the towel on the nearest lounger. Fill those areas with matching stone tiles and the clean white cushion. Keep the pool, other loungers, skyline, and lighting unchanged.”

For text changes:

“Replace the text on the shop sign with ‘OPEN DAILY 9–6’. Keep the sign shape, mounting, surrounding building, and all other details the same.”

Start with one change. If the result is close, follow up in the same chat with a narrower instruction. Chaining small edits preserves more of the original than rewriting the whole scene.

Step-by-Step Editing Workflow

1. Prepare the source image. Crop tightly if the area you want to change is small. Higher-resolution source photos give the model more detail to preserve.

2. Upload the image in the Gemini app and open the Create images tool.

3. Write a prompt that follows the pattern above. Attach extra reference images only when you need a specific style, product, or character to match.

4. Submit and wait for the result. Review it at full size.

5. If something drifted, reply in the same conversation. Example: “The sofa colour is correct, but the floor pattern changed. Restore the original floor tiles and keep everything else.”

6. For fine control, open the generated image and use the Sketch tool to mark a region, then describe the change for that region only.

7. Download the full-size image when satisfied. Paid users can also redo the generation with Nano Banana Pro from the three-dot menu if they need higher fidelity.

The model supports multi-turn conversation, so earlier context stays available. This helps when you want to keep a person or product consistent across several new scenes.

Tips for Better Results

• Name borders and neighbouring objects. “Change the sky above the roofline” is clearer than “change the sky”.
• Request one change per turn when the edit is important. Multiple simultaneous changes increase the chance of unintended alterations.
• For product photos, list the exact elements that must stay (label text, bottle shape, cap, camera angle).
• Use Google Search grounding when the edit needs current information, such as weather or event details, by enabling it in the tools.
• If small text looks soft, generate at 2K or 4K and keep the text prompt short and specific.
• Characters stay more consistent when you upload a clear reference photo and mention “keep the same person” in every follow-up.

Limits remain. Very small text can still blur. Left-versus-right placement sometimes fails. Complex scenes with many overlapping objects may require several refinement turns.

If you work with on-device embeddings or private search, the same privacy-first approach applies here: your uploaded photos stay in the conversation and are not used for training under standard Google terms. For local multimodal search techniques, see our guide on EmbeddingGemma 2 on-device search.

Watch a Detailed Comparison

The video below walks through Nano Banana 2.1’s mask editing, scoring, and practical differences from earlier models and Nano Banana Pro.

Conclusion

Nano Banana 2.1 gives paid Gemini users stronger control over image edits. Clear prompts that name one change and list what stays the same produce the most reliable results. Start with a single targeted edit, review the full-size output, and refine in the same conversation.

The model is already available in the Gemini app for Google AI plan subscribers. Free users can still create and edit with Nano Banana 2, then upgrade when they need the improved consistency and text quality.

Sources

• Google DeepMind, Nano Banana 2.1 model page and model card, 6 October 2026: https://deepmind.google/models/gemini-image/flash/
• Gemini app image generation overview: https://gemini.google/overview/image-generation/
• Google AI Studio documentation on Nano Banana image generation and editing
• Official Gemini Apps Help on editing images with Nano Banana