GPT Image 2 (ChatGPT Images 2.0) vs Nano Banana 2 (Gemini 3.1 Flash): Which AI Image Generator is Better in 2026?
Compare the current Plykit GPT Image 2 and Nano Banana 2 editing paths on the same labelled product photos. Model names alone do not guarantee legible or unchanged packaging text. We have removed unsupported accuracy estimates; the bounded sample below is not a population benchmark.
Can these models keep product-label text while changing the background?
We tested three bottles and three cartons on October 2, 2026, with one edit per model per source photo. These are all twelve outputs, including visible mistakes. This small convenience sample is not an accuracy benchmark or a guarantee for your product.
GPT Image 2: Standard, medium quality, square edit, 4 credits per image. Nano Banana 2: Standard (Gemini 3.1 Flash Image Preview), 1K square edit, 3 credits per image. The twelve tests used 42 test-account credits in total. Settings and prices may change; check the current quote before generating.
Exact shared prompt and review limits
Replace only the background with a plain light-grey studio background. Preserve the photographed product, its shape, every visible label letter, number and punctuation exactly as in the reference. Do not add, remove, translate or rewrite any text. Keep the same product view. One image only.
Each model received the original source URL; source previews below are reduced to 1024 pixels on the long edge. Outputs are unretouched. We visually checked readable front-label fields; unclear source text stays unverified. “No change observed” is not full-character or pixel-preservation certification. The examples show that readable brand names can coexist with altered small print or product geometry. Proofread every final label.
D02: Sensitive Marinara
GPT Image 2 · 4 credits
Main nutrition text readable; no change observed in checked main rows. Fine print is not fully verified. Jar perspective changed.
Nano Banana 2 · 3 credits
Main text readable, but Dietary Fiber daily value changed from 5% to 9%; extra side jars and rewritten side labels remain.
D04: Simply Orange Pulp Free 100% Orange Juice
GPT Image 2 · 4 credits
Brand and main statements readable. Small calorie-box text and batch code are not verified character by character; perspective changed.
Nano Banana 2 · 3 credits
Brand readable. The small 100% PURE SQUEEZED line is visibly distorted; batch code is not verified. Bottle view changed.
D05: Pure Grade A Maple Syrup Amber Color Rich Taste
GPT Image 2 · 4 credits
Main title readable. Small serving-suggestion text is distorted; do not treat the whole label as exact. Bottle outline changed.
Nano Banana 2 · 3 credits
Main title readable, but small serving-suggestion text and volume digits are distorted. Bottle shape and lighting changed.
D07: Protein From Real Food - Dark Chocolate Nut
GPT Image 2 · 4 credits
Checked front-panel phrases and quantities readable; no changed letters observed in those fields. Box perspective and artwork changed.
Nano Banana 2 · 3 credits
Checked front-panel phrases and quantities readable; no changed letters observed in those fields. Box perspective and artwork changed.
D09: 2% Reduced Fat Milk
GPT Image 2 · 4 credits
Front-panel brand, 2%, 44% and 1.89 L readable with no change observed in checked fields. Original top date stamp is too unclear to certify.
Nano Banana 2 · 3 credits
Front-panel text readable; the top date stamp is absent. Small print and all characters are not certified; carton view changed.
D10: Coconut Water The Original
GPT Image 2 · 4 credits
Checked brand, volume and main phrases readable with no changed letters observed. Hand retained; framing changed.
Nano Banana 2 · 3 credits
Checked brand, volume and main phrases readable with no changed letters observed. Hand retained but geometry and framing changed.
Source photos: Keetly product dataset, CC0 own-photography subset. Brand names identify the photographed samples; no endorsement is implied.
Feature Comparison
| Feature | GPT Image 2 (ChatGPT Images 2.0) | Nano Banana 2 (Gemini 3.1 Flash) |
|---|---|---|
| Test task | Replace background; retain visible label | Same instruction and source photo |
| Test configuration | Standard edit, medium, 1024 × 1024 | Standard edit, 1K, 1:1; web search off |
| Plykit test quote | 4 credits per edit | 3 credits per edit |
| Expected label quality | Inspect the actual output | Inspect the actual output |
| Generation time | Variable; no fixed-time promise | Variable; no fixed-time promise |
| Sign-in | Required for generation | Required for generation |
Strengths & Advantages
GPT Image 2 (ChatGPT Images 2.0) Strengths
- ✓Reference-based editing in the current Plykit workflow
- ✓The selected medium 1K edit has an explicit 4-credit quote
- ✓Keep the source photo and check every critical label before use
Nano Banana 2 (Gemini 3.1 Flash) Strengths
- ✓Reference-based editing with the standard Gemini 3.1 Flash Image path
- ✓The selected standard 1K edit has an explicit 3-credit quote
- ✓This test disables web search and requests one output per source
Our Verdict
Use the visible source/output pairs to judge your task. Readable text and unchanged wording are separate checks; a valid image response is not proof of label preservation. These six selected photos are a small convenience sample, not an accuracy percentage, a universal ranking or a promise of identical results. Recheck the current quote before submitting your own job.
Frequently Asked Questions
Which model preserves product-label spelling?▼
Neither name guarantees it. Inspect the source and result side by side, including numbers, punctuation and small print. We report this bounded sample without extrapolating an overall accuracy rate.
How much does the tested edit cost on Plykit?▼
The frozen test uses GPT Image 2 medium 1K edit at 4 credits and Nano Banana 2 standard 1K edit at 3 credits. Other configurations can cost more. These are product credit quotes, not provider dollar bills.
Is this a web-search or batch-generation comparison?▼
No. The same six source photos and editing instruction are tested once per model. Web search is off for Nano Banana 2 and each request asks for one image.
Does success mean the product is ready for a listing?▼
No. Review wording, product shape, crop, resolution and marketplace requirements. A successful API response is only a technical result.