Google Gemini 2.5 Flash Image Preview Text To Image

Playground

Google Gemini 2.5 Flash Text-to-Image delivers state-of-the-art text-to-image generation and image editing with previews. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Google Gemini 2.5 Flash Image Preview — Text-to-Image

Gemini 2.5 Flash Image Preview is Google’s fast and efficient text-to-image generation model built on the Gemini architecture. Generate high-quality images from text descriptions with flexible aspect ratios and multiple output formats — all at an affordable price.

Why It Stands Out

Fast generation: Optimized for speed while maintaining high visual quality.
Prompt Enhancer: Built-in AI-powered prompt optimization for better image results.
Flexible aspect ratios: Choose from multiple aspect ratio presets to fit your content needs.
Multiple output formats: Export as PNG or other formats based on your requirements.
Powered by Gemini: Leverages Google’s advanced multimodal AI for strong prompt understanding.

Parameters

Parameter	Required	Description
prompt	Yes	Text description of the image you want to generate.
aspect_ratio	No	Output aspect ratio (square, portrait, landscape, etc.).
output_format	No	Output format: png, jpeg, etc. (default: png).
enable_sync_mode	No	Wait for result before returning response (API only).
enable_base64_output	No	Return base64 string instead of URL (API only).

How to Use

Write a prompt describing the image you want. Use the Prompt Enhancer for AI-assisted optimization.
Select aspect ratio — choose the format that fits your use case.
Choose output format — select PNG or other available formats.
Click Run and download your image.

Best Use Cases

Quick Prototyping — Rapidly generate visual concepts and ideas.
Social Media Content — Create images sized for different platforms.
Marketing & Advertising — Produce eye-catching visuals for campaigns.
Creative Exploration — Experiment with different styles and concepts affordably.
Design Mockups — Generate placeholder images and visual references.

Pricing

Output	Price
Per image	$0.038

Pro Tips for Best Quality

Be descriptive in your prompt — include style, mood, lighting, composition, and specific details.
Use style keywords like “photorealistic,” “illustration,” “digital art,” or “cinematic” to guide the aesthetic.
Choose the appropriate aspect ratio for your intended use (square for social media, wide for banners, etc.).
Use PNG format when you need higher quality or transparency support.

Notes

Processing time varies based on current queue load.
Please ensure your prompts comply with Google’s Safety Guidelines.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result


# Submit the task
curl --location --request POST "https://api.wavespeed.ai/api/v3/google/gemini-2.5-flash-image-preview/text-to-image" \
--header "Content-Type: application/json" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}" \
--data-raw '{
    "output_format": "png",
    "enable_sync_mode": false,
    "enable_base64_output": false
}'

# Get the result
curl --location --request GET "https://api.wavespeed.ai/api/v3/predictions/${requestId}/result" \
--header "Authorization: Bearer ${WAVESPEED_API_KEY}"

Parameters

Task Submission Parameters

Request Parameters

Parameter	Type	Required	Default	Range	Description
prompt	string	Yes		-	The positive prompt for the generation.
aspect_ratio	string	No	-	1:1, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9	The aspect ratio of the generated media.
output_format	string	No	png	png, jpeg	The format of the output image.
enable_sync_mode	boolean	No	false	-	If set to true, the function will wait for the result to be generated and uploaded before returning the response. It allows you to get the result directly in the response. This property is only available through the API.
enable_base64_output	boolean	No	false	-	If enabled, the output will be encoded into a BASE64 string instead of a URL. This property is only available through the API.

Response Parameters

Parameter	Type	Description
code	integer	HTTP status code (e.g., 200 for success)
message	string	Status message (e.g., “success”)
data.id	string	Unique identifier for the prediction, Task Id
data.model	string	Model ID used for the prediction
data.outputs	array	Array of URLs to the generated content (empty when status is not `completed`)
data.urls	object	Object containing related API endpoints
data.urls.get	string	URL to retrieve the prediction result
data.has_nsfw_contents	array	Array of boolean values indicating NSFW detection for each output
data.status	string	Status of the task: `created`, `processing`, `completed`, or `failed`
data.created_at	string	ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.error	string	Error message (empty if no error occurred)
data.timings	object	Object containing timing details
data.timings.inference	integer	Inference time in milliseconds

Result Request Parameters

Parameter	Type	Required	Default	Description
id	string	Yes	-	Task ID

Result Response Parameters

Parameter	Type	Description
code	integer	HTTP status code (e.g., 200 for success)
message	string	Status message (e.g., “success”)
data	object	The prediction data object containing all details
data.id	string	Unique identifier for the prediction, the ID of the prediction to get
data.model	string	Model ID used for the prediction
data.outputs	string	Array of URLs to the generated content (empty when status is not completed).
data.urls	object	Object containing related API endpoints
data.urls.get	string	URL to retrieve the prediction result
data.status	string	Status of the task: `created`, `processing`, `completed`, or `failed`
data.created_at	string	ISO timestamp of when the request was created (e.g., “2023-04-01T12:34:56.789Z”)
data.error	string	Error message (empty if no error occurred)
data.timings	object	Object containing timing details
data.timings.inference	integer	Inference time in milliseconds

Google Gemini 2.5 Flash Image Preview Edit Google Gemini 2.5 Flash Image Text To Image