Gen4 Image

Image generationNewAvailable
by RunwayModel ID: runway-gen4-image

Runway's Gen-4 Image model with references. Use up to 3 reference images to create the exact image you need. Capture every angle.

Price
$0.096/image
Aspect ratios
16:9, 9:16, 4:3, 3:4, 1:1, 21:9
Input β†’ output
Text β†’ Image
Developer
Runway
Updated
September 24, 2026
01

Playground

Try Gen4 Image

Input & output

$0.096/image
Try Gen4 Image
Advanced settings (1)
Output
Your image appears here.

This run

$0.096 Β· 9.6 credits

For accounts without a purchase: runs above 2 credits need a top-up.

New here?

10 free credits ($0.10) when you sign up with Google

Usable 24 hours after sign-up, up to 5 runs per day and at most 2 credits per run. Other sign-in methods start without credits.

02

Examples

Real outputs from the public examples of this model on Replicate, with the prompt and settings that produced them. They were not generated live on this page.
  • Example output 1 from Gen4 Image: a close up portrait of @woman and @man standing in @park, hands in pockets, looking cool. She is wearing her pink sweater and bangles.Open full size
    InputInput

    Prompt

    a close up portrait of @woman and @man standing in @park, hands in pockets, looking cool. She is wearing her pink sweater and bangles.

    Settings

    aspect_ratio
    4:3
    resolution
    1080p
  • Example output 2 from Gen4 Image: show me the man from @img_1 framed through the windshield of a car like the reference @img_2Open full size
    InputInput

    Prompt

    show me the man from @img_1 framed through the windshield of a car like the reference @img_2

    Settings

    aspect_ratio
    16:9
    resolution
    1080p
  • Example output 3 from Gen4 Image: @woman holds the @bottom up, the bottle is the subject, the @woman is visible but she is blurred, she is in the @living_room, it is a producOpen full size
    InputInput

    Prompt

    @woman holds the @bottom up, the bottle is the subject, the @woman is visible but she is blurred, she is in the @living_room, it is a product photo shoot

    Settings

    aspect_ratio
    4:3
    resolution
    1080p
03

About Gen4 Image

TL;DRAs of September 24, 2026

Gen4 Image is a model by Runway in the Image generation category. On Railwail, Gen4 Image costs $0.096 per image. Depending on the settings, the price ranges from $0.060/image to $0.096/image. Supported aspect ratios: 16:9, 9:16, 4:3, 3:4, 1:1, and 21:9.

04

Pricing

Prices in US dollars. Usage is charged from prepaid credits.
resolution: 720p$0.060 per image
resolution: 1080pDefault$0.096 per image
  • 1 credit = $0.01

Cost calculator

Price calculator

Variant

Total

$9.60

960 credits

Per run

$0.096 Β· 9.6 credits

Fixed price per run, known before the run starts.

05

API

Call Gen4 Image with your Railwail API key. Use this model ID in the request:
curl https://railwail.com/api/v1/images/generations \
  -H "Authorization: Bearer $RAILWAIL_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "runway-gen4-image",
    "prompt": "A lighthouse on a rocky coast at sunset, photorealistic"
  }'
Set your key as RAILWAIL_API_KEYCreate API key
06

Specifications

Model ID
runway-gen4-image
Developer
Runway
Input
Text
Output
Image
Aspect ratios
16:9, 9:16, 4:3, 3:4, 1:1, 21:9
Billing
Fixed price, known before the run
Catalog entry updated
September 24, 2026

Input parameters

Inputs and settings from the model's input schema. The example in the API section shows which of them the API accepts.

  • promptrequired
    Type: Text
    Default: –
    Allowed values: –
  • aspectRatio
    Type: Choice
    Default: –
    Allowed values: 16:9, 9:16, 4:3, 3:4, 1:1, or 21:9

Tags

  • replicate
  • runwayml
  • text-to-image
07

Use cases

08

Frequently asked questions

What is Gen4 Image?

Gen4 Image is a model by Runway in the Image generation category. On Railwail you can call it with an API key through the Railwail API.

How much does Gen4 Image cost on Railwail?

On Railwail, Gen4 Image costs $0.096 per image. Depending on the settings, the price ranges from $0.060/image to $0.096/image. The price is known before the run starts. Usage is paid from prepaid credits; 1 credit equals $0.01.

Which settings does Gen4 Image support?

According to its input schema, Gen4 Image knows these parameters: prompt and aspectRatio (16:9, 9:16, 4:3, 3:4, 1:1, or 21:9).

How fast is Gen4 Image?

There are not enough measured runs of Gen4 Image on Railwail yet to state a run time. It depends on the input, the settings and the load at the provider.

Is Gen4 Image better than FLUX 1.1 Pro?

That depends on the task. Gen4 Image (Runway) and FLUX 1.1 Pro (Black Forest Labs) are both models in the Image generation category. The comparison page shows their prices and specifications side by side.

Compare Gen4 Image and FLUX 1.1 Pro

How do I use Gen4 Image through the API?

Create a Railwail API key and send your request with the model ID runway-gen4-image. Code examples for curl, Python and JavaScript are in the API section of this page.

09

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Use Gen4 Image via the API

One API key for every model on Railwail. Usage is charged from prepaid credits, 1 credit = $0.01.