Sub-5 Second Generation
Experience ultra-low latency with image generation speeds of roughly 4 seconds per 1K image. This is 2.7x faster than flagship models, perfect for real-time user-facing apps.
Gemini 3.1 Flash Lite Image
Nano Banana Lite API powers the Gemini 3.1 Flash-Lite model, delivering sub-5 second image generation. This lite vision tool is optimized for high-velocity workflows, offering 1K resolution and native image-to-image editing at scale.
Input
Output
API Usage Examples
curl --request POST "https://gptproto.com/api/v3/google/gemini-3.1-flash-lite-image/text-to-image" \
--header "Authorization: Bearer $GPTPROTO_API_KEY" \
--header "Content-Type: application/json" \
--data '{
"prompt": "A tiny origami fox sailing a teacup across a moonlit puddle",
"aspect_ratio": "16:9",
"size": "1k",
"output_formart": "png",
"enable_base64_output": false,
"enable_sync_mode": false
}'Gemini 3.1 Flash Lite Image pricing
Start from the cost of a single sample and pick a testing budget. GPTProto rates are 40% below list price.
GPTProto · Price est.
Estimated from the rate card. Final charges may vary.40% off
Cost per request$0.0202$0.0336
Top up
GPTProto vs official pricing.Requests
You pay
40% off
$100You receive$100.00
Save$66.66 (40%)vs Google official
Core Nano Banana Lite API Features
Explore why the Nano Banana Lite API is the leading choice for high-scale vision tasks.
Native Visual Editing
Modify images using natural language. Add, remove, or change elements within your visuals instantly. Ideal for A/B testing creative variations and iterating on designs at a lite cost.
High-Throughput Vision OCR
Optimized for scanning large document batches. Extract tabular data and identify UI components from screenshots with high accuracy and minimal processing time for enterprise workflows.
Cost-Efficient Scaling
At $2.00 per 1M input tokens and $0.034 per image, this is the most economical vision API available. Maximize your ROI on high-volume projects without sacrificing multimodal performance.
Related Models
All Models| Model | Resolution | Input → Output | ||
|---|---|---|---|---|
 | $0.02 per time | 1K | Input: TextInput: Image Output: Image | |
| $0.04 per time | 1K · 2K | Input: TextInput: Image Output: Image | ||
| $0.04 per time | 1K · 2K · 4K | Input: TextInput: Image Output: Image | ||
| $6.40 / $24.00 per 1M | — | Input: TextInput: Image Output: Image | ||
| $0.04 per time | 1K · 2K · 4K | Input: TextInput: Image Output: Image | ||
| $0.03 per time | — | Input: TextInput: Image Output: Image | ||
| $0.03 per time | — | Input: TextInput: Image Output: Image | ||
| $0.01 per time | — | Input: TextInput: Image Output: Image | ||
| $0.02 per time | — | Input: TextInput: Image Output: Image | ||
| $5.60 / $22.40 per 1M | — | Input: TextInput: Image Output: Image | ||
| — | $0.14 per time | — | Input: Text Output: Image | |
| $0.08 per time | 1K · 2K · 4K | Input: TextInput: Image Output: Image | ||
| $0.04 per time | — | Input: Text Output: Image | ||
| $1.75 / $5.60 per 1M | — | Input: TextInput: Image Output: Image | ||
| — | $0.01 per time | — | Input: Image Output: Image | |
| — | $0.02 per time | — | Input: Image Output: Image | |
| $0.03 per time | — | Input: TextInput: Image Output: Image | ||
| $0.02 per time | — | Input: TextInput: Image Output: Image | ||
| $0.03 per time | — | Input: Text Output: Image | ||
| $0.06 per time | — | Input: TextInput: Image Output: Image | ||
| $0.03 per time | — | Input: TextInput: Image Output: Image | ||
| $0.05 per time | — | Input: Image Output: Image | ||
| $0.05 per time | — | Input: Image Output: Image | ||
| $0.05 per time | — | Input: Text Output: Image | ||
| $0.06 per time | — | Input: TextInput: Image Output: Image |
Nano Banana Lite API Questions
Answers regarding the Nano Banana Lite API, Gemini 3.1 Flash-Lite capabilities, and integration requirements.
What is the generation speed of Nano Banana Lite?
The Nano Banana Lite API is built for velocity. It generates a 1K resolution image in approximately 4 seconds. This makes it roughly 2.7 times faster than the standard Flash model, which is ideal for real-time applications and high-throughput production environments where latency is the primary operational constraint for developers using this lite engine.
Does this lite model support Google Search grounding?
No. Unlike the standard Flash or Pro versions, the Nano Banana Lite API does not support grounding with Google Search. It relies on its internal knowledge cutoff of May 2024. If your workflow requires real-time factual verification or image generation based on current web events, we recommend utilizing the standard Nano Banana 2 model instead to ensure the most up-to-date visual context.
What image resolutions are supported by Nano Lite?
To maintain its ultra-low latency profile, the Nano Banana Lite API specifically supports 1K resolution outputs. While other models in the family can scale up to 4K, this lite variant is hyper-optimized for 1024x1024 visuals. This limitation ensures the model remains the fastest and most cost-effective choice for developers building high-volume applications at scale.
Is SynthID watermarking included in Nano images?
Yes. Every image generated via the Nano Banana Lite API includes an invisible, tamper-resistant SynthID watermark. This ensures compliance with AI transparency standards and provides a layer of safety for enterprise users. The watermark is integrated natively during the generation process without affecting the visual quality of the 1K output or increasing the latency for your application.
Can I use this API for image-to-image editing?
Absolutely. The Nano Banana Lite API supports native image-to-image editing. You can provide a reference image and use natural language prompts to modify specific elements, change color grading, or add objects. It is designed for high-velocity visual reasoning, though it is not optimized for multi-turn sequential editing or processing more than 14 reference inputs simultaneously.
What are the input and output pricing tiers?
Pricing for the Nano Banana Lite API is highly competitive. Input tokens (text or image) are priced at $2.00 per 1M tokens. Text output is $10.00 per 1M tokens, and generated 1K images cost $0.034 each. We also offer a 50% discount on input tokens for cached context hits, making it the most economical choice for long-running agent sessions and large-scale visual processing tasks.