Google Imagen3 Fast

Google Imagen3 Fast

Playground

Imagen3 Fast is Google’s top text-to-image model, creating richly detailed, beautifully lit images. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Features

Generate high-quality images at speed with Google Imagen 3 Fast. This optimized model delivers Google’s renowned image generation capabilities with faster processing — perfect for rapid iteration, batch generation, and everyday creative work.

Looking for maximum quality? Try Google Imagen 3 for premium output.

Why It Looks Great

• Google quality: Powered by Google’s state-of-the-art Imagen technology.
• Fast generation: Speed-optimized for rapid turnaround.
• Batch support: Generate up to 4 images per request.
• Negative prompts: Exclude unwanted elements for precise control.
• Flexible aspect ratios: Multiple format options for any use case.
• Prompt Enhancer: Built-in tool to refine your descriptions automatically.
• Reproducible results: Use the seed parameter to recreate exact outputs.

Parameters

How to Use

1. Write your prompt — describe the image you want to create.
2. Use Prompt Enhancer (optional) — click to automatically enrich your description.
3. Set aspect ratio — choose the format that fits your needs.
4. Choose number of images — generate 1-4 variations at once.
5. Add negative prompt (optional) — specify elements to exclude.
6. Set seed (optional) — for reproducible results.
7. Run — click the button to generate.
8. Download — preview and save your images.

Pricing

Flat rate per image generated.

Best Use Cases

• Rapid Prototyping — Generate multiple variations quickly to explore ideas.
• Lifestyle & Scenes — Create authentic everyday moments and scenarios.
• Batch Generation — Produce multiple images efficiently in single requests.
• Content Creation — Generate visuals for social media, blogs, and marketing.
• Concept Exploration — Test different prompts and styles at speed.

Example Prompts

• “A couple folding laundry together in a sunlit bedroom, casual clothes, sense of routine”
• “Golden retriever playing fetch on a beach at sunset, action shot, joyful energy”
• “Cozy coffee shop corner with plants, morning light through windows, warm atmosphere”
• “Professional headshot of a smiling businesswoman, neutral background, studio lighting”
• “Minimalist workspace with laptop, succulent plant, and coffee cup, clean aesthetic”

Pro Tips for Best Results

• Use batch generation (num_images: 4) to explore variations efficiently.
• Include mood and atmosphere: “sense of routine”, “joyful energy”, “warm atmosphere”.
• Negative prompts help avoid unwanted elements: “blur”, “distortion”, “watermark”.
• Use the same seed with different prompts to maintain consistency.
• Fast mode is ideal for iteration — find your best prompt, then consider premium for finals.
• Match aspect ratio to your platform: 16:9 for YouTube, 9:16 for Stories, 1:1 for Instagram.

Notes

• Maximum 4 images per generation request.
• Fast mode prioritizes speed while maintaining Google’s quality standards.
• Processing time is optimized for rapid turnaround.
• For highest quality output, consider the standard Imagen 3 model.

Authentication

For authentication details, please refer to the Authentication Guide.

API Endpoints

Submit Task & Query Result

set -euo pipefail

export WAVESPEED_API_KEY="your-api-key"

REQUEST_BODY=$(cat <<'JSON'
{
  "prompt": "A cinematic ocean wave at sunrise, highly detailed",
  "aspect_ratio": "1:1",
  "num_images": 1
}
JSON
)

# 1. Submit the prediction.
SUBMIT_RESPONSE=$(curl --silent --show-error --fail-with-body \
  -X POST "https://api.wavespeed.ai/api/v3/google/imagen3-fast" \
  -H "Authorization: Bearer ${WAVESPEED_API_KEY}" \
  -H "Content-Type: application/json" \
  -d "${REQUEST_BODY}")

TASK=$(printf '%s' "${SUBMIT_RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
PREDICTION_ID=$(printf '%s' "${TASK}" | jq -r '.id // empty')
if [ -z "${PREDICTION_ID}" ]; then
  printf 'Submission response did not contain a prediction id
' >&2
  exit 1
fi
RESULT_URL=$(printf '%s' "${TASK}" | jq -r '.urls.get // empty')
if [ -z "${RESULT_URL}" ]; then RESULT_URL="https://api.wavespeed.ai/api/v3/predictions/${PREDICTION_ID}/result"; fi

# 2. Poll until the prediction finishes.
while true; do
  RESPONSE=$(curl --silent --show-error --fail-with-body \
    "${RESULT_URL}" \
    -H "Authorization: Bearer ${WAVESPEED_API_KEY}")
  RESULT=$(printf '%s' "${RESPONSE}" | jq 'if type == "object" and has("data") then .data else . end')
  STATUS=$(printf '%s' "${RESULT}" | jq -r '.status // empty')

  case "${STATUS}" in
    completed) printf '%s\n' "${RESULT}" | jq '.outputs'; break ;;
    failed|cancelled|timeout) printf '%s\n' "${RESULT}" | jq . >&2; exit 1 ;;
    created|processing) sleep 2 ;;
    *) printf 'Unexpected status: %s
' "${STATUS}" >&2; exit 1 ;;
  esac
done

Parameters

Task Submission Parameters

Request Parameters

Response Parameters

Result Request Parameters

Result Response Parameters