text-to-image
RunwayML Gen-4 Image Turbo is cheaper and 2.5x faster than Gen-4 Image and supports up to 3 reference images to capture every angle. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.
Idle
Your request will cost $0.03 per run.
For $1 you can run this model approximately 33 times.
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README
Runway Gen4 Image Turbo
Generate stunning images from text prompts with optional reference image guidance. Runway's Gen4 Image Turbo delivers fast, high-quality results with support for multiple aspect ratios and resolutions — perfect for rapid creative iteration.
Why It Looks Great
- Reference-guided generation: Upload up to 3 reference images to guide style, composition, or subject appearance.
- Flexible aspect ratios: Supports multiple formats including 9:16, 16:9, 1:1, and more for any use case.
- High resolution output: Generate images up to 1080p for crisp, detailed results.
- Fast turbo processing: Optimized for speed without sacrificing quality.
- Reproducible results: Use the seed parameter to recreate exact outputs or explore variations.
Parameters
| Parameter | Required | Description |
|---|---|---|
| prompt | Yes | Text description of the image you want to generate. |
| aspect_ratio | No | Output aspect ratio (e.g., 9:16, 16:9, 1:1). Default varies. |
| resolution | No | Output resolution (e.g., 1080p). |
| reference_images | No | Up to 3 reference images to guide generation (upload or URL). |
| seed | No | Random seed for reproducibility. Leave empty for random. |
| enable_base64_output | No | API only: Returns base64 string instead of URL. |
How to Use
- Write your prompt — describe the image you want to create in detail.
- Choose aspect ratio — select the format that fits your needs (9:16 for portraits/stories, 16:9 for landscapes, etc.).
- Select resolution — pick your desired output quality.
- Add reference images (optional) — upload up to 3 images to guide style, subject, or composition.
- Set seed (optional) — use a specific number for reproducible results, or leave empty for random.
- Run — click the button to generate.
- Download — preview and save your generated image.
Pricing
Flat rate per image generation.
| Output | Cost |
|---|---|
| Per image | $0.03 |
Examples
| Images Generated | Total Cost |
|---|---|
| 1 | $0.03 |
| 10 | $0.30 |
| 100 | $3.00 |
Best Use Cases
- Social Media Content — Create scroll-stopping visuals for Instagram, TikTok, and stories with 9:16 aspect ratio.
- Concept Art & Ideation — Rapidly explore visual ideas and creative directions.
- Marketing & Advertising — Generate on-brand imagery for campaigns and promotions.
- Character Design — Use reference images to maintain consistent character appearance across generations.
- Style Transfer — Apply the aesthetic of reference images to new scenes and subjects.
Pro Tips for Best Results
- Be specific in your prompts — include details about lighting, mood, style, and composition.
- Use reference images strategically: one for style, one for subject, one for composition.
- Keep the seed fixed when iterating on prompts to isolate the effect of text changes.
- For consistent characters or styles across multiple images, always include the same reference image.
- Match aspect ratio to your intended use case: 9:16 for mobile/stories, 16:9 for desktop/video thumbnails, 1:1 for profile pictures.
Notes
- If using URLs for reference images, ensure they are publicly accessible. A preview thumbnail confirms successful loading.
- The enable_base64_output option is only available through the API, not the web interface.
- Reference images influence but do not guarantee exact replication — they guide style and composition.