Image

Grok Image Fast API

Fast, cheap image generation from xAI.

Generate AI images with xAI's fast Grok image model through one unified API. A single REST endpoint, async jobs, and webhooks, with no separate xAI account to manage.

Get API key Read the docs

2 credits
Flat per image: ~8s
Avg. generation: 5
Aspect ratios

Grok Image Fast candid photograph of three friends laughing on a dusty APEX trail at golden hour

Playground

Try Grok Image Fast right here.

model: grok-imagine-image

Prompt

Aspect ratio

Media inputs

Reference image

Estimated cost 2 credits · $0.02 Generate in Studio

Output Example

Grok Image Fast photoreal matte black APEX water bottle on granite in harsh noon light, fingerprints and dust visible — Photoreal matte black APEX water bottle on a granite ledge in harsh noon light, dust, fingerprints, natural daylight, less synthetic.

Capabilities

What's new in Grok Image Fast.

Built on xAI's Aurora engine

It runs on Aurora, an autoregressive mixture-of-experts model (now in its Aurora-2 generation) trained for photorealistic rendering and precise text-instruction following.

A natural, less synthetic look

It leans into realistic, "imperfect by design" imagery rather than the over-polished stock-photo feel, which reads as more authentic in brand and social content.

Strong text and instruction following

It renders readable text inside images and follows detailed prompts closely, which suits ads, posters, and labels.

A full editing workflow, not just generation

Beyond text-to-image, it edits existing images with natural language, combines multiple input images in one pass, applies style transfer, and refines across multiple turns.

The fast, cheap Grok image model

Use this when you want volume and speed. For 2K output and a quality control, switch to Grok Image 2 (Imagine Image 2.0).

Part of the wider Grok pipeline

Image outputs flow into Grok Video on the same key. On Apiframe pricing is a flat 2 credits ($0.02) per image, for both generation and editing.

Showcase

See what Grok Image Fast can create.

Real outputs generated with Grok Image Fast on Apiframe, each with the prompt behind it.

Try Grok Image Fast

Grok Image Fast candid photograph of an APEX Launch Night pop-up in a warehouse courtyard with string lights and a chalkboard — Photographic night pop-up for APEX outdoor gear in a warehouse courtyard, string lights, real people trying on jackets, a handmade chalkboard reading LAUNCH NIGHT OCT 26, candid, grain, not a graphic poster.

Grok Image Fast branded outdoor photo of an APEX tent on a windy ridge at dusk — Branded outdoor hero photo: an APEX two-person tent on a windy ridge at dusk, small APEX wordmark on the fly, photographic, natural color, not CGI.

Grok Image Fast vertical candid of a hiker in an APEX jacket walking toward camera on a dusty ridge at late sun — Vertical candid photo of a hiker in an APEX jacket walking toward camera on a dusty ridge, late sun, dust at the boots, imperfect handheld, natural skin.

Pricing

Simple per-generation pricing.

2 credits per generation ≈ $0.02

You only pay for successful generations. Failed jobs are refunded automatically.
One credit balance across every model on Apiframe, no per-model plans.
Start with free credits. No subscription required.
Volume discounts on larger plans.

See plans and credit packs Provider prices Compare Grok Image Fast pricing vs fal.ai and others

Specs

At a glance.

Provider xAI

Model ID grok-imagine-image

Aspect ratios 1:1, 2:3, 3:2, 16:9, 9:16

Image input Supported

Avg. time ~11s

Comparison

Grok Image Fast vs Imagen 4 Fast vs Nano Banana

Grok Image Fast against the other budget-tier image models on Apiframe. All flat-priced.

Feature	Grok Image Fast	Imagen 4 Fast	Nano Banana
Price per image	2 credits flat (≈$0.02)	2 credits flat (≈$0.02)	5 credits flat (≈$0.05)
Avg. generation	~8s	~8s	~15s
Image input	Reference image	—	Multi-image editing
Signature strength	Natural look, video pipeline tie-in	Speed-first Imagen tier	Conversational editing
Best for	Cheap volume with an I2V path	Real-time experiences	Edit-heavy workflows

Specs reflect what each model supports on Apiframe today, from the live catalog.

Quickstart

How to call the Grok Image Fast API.

Send one POST /v2/images/generate request with your API key. The call returns a jobId you can poll, or pass a webhook_url and the result is pushed to you the moment it's ready.

Swap grok-imagine-image for any other model and nothing else changes.

Get API key Read the docs

generate.js

const response = await fetch("https://api.apiframe.ai/v2/images/generate", {
  method: "POST",
  headers: {
    "X-API-Key": "afk_your_api_key_here",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "prompt": "a sleek silver sports car on a coastal highway at sunset, hyper-realistic",
    "model": "grok-imagine-image",
    "grokImagineParams": {
      "image": "https://example.com/input.jpg"
    }
  }),
});
const { jobId } = await response.json();
console.log(jobId);

import requests

response = requests.post(
    "https://api.apiframe.ai/v2/images/generate",
    headers={
        "X-API-Key": "afk_your_api_key_here",
        "Content-Type": "application/json",
    },
    json={
        "prompt": "a sleek silver sports car on a coastal highway at sunset, hyper-realistic",
        "model": "grok-imagine-image",
        "grokImagineParams": {
            "image": "https://example.com/input.jpg"
        }
    },
)
print(response.json())  # { "jobId": "...", "status": "QUEUED" }

curl -X POST https://api.apiframe.ai/v2/images/generate \
  -H "X-API-Key: afk_your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
        "prompt": "a sleek silver sports car on a coastal highway at sunset, hyper-realistic",
        "model": "grok-imagine-image",
        "grokImagineParams": {
            "image": "https://example.com/input.jpg"
        }
    }'

let job;
do {
  await new Promise((r) => setTimeout(r, 2000));
  job = await fetch("https://api.apiframe.ai/v2/jobs/JOB_ID", {
    headers: { "X-API-Key": "afk_your_api_key_here" },
  }).then((r) => r.json());
} while (job.status !== "COMPLETED" && job.status !== "FAILED");
console.log(job.result);

import requests, time

while True:
    job = requests.get(
        "https://api.apiframe.ai/v2/jobs/JOB_ID",
        headers={"X-API-Key": "afk_your_api_key_here"},
    ).json()
    if job["status"] in ("COMPLETED", "FAILED"):
        break
    time.sleep(2)
print(job["result"])

curl https://api.apiframe.ai/v2/jobs/JOB_ID \
  -H "X-API-Key: afk_your_api_key_here"

Input schema

Every field Grok Image Fast accepts, with types and defaults. The full reference lives in the docs.

Field	Type	Description
prompt required	string	Text description of what to generate.
model required	string	The model identifier for this endpoint. Default:"grok-imagine-image" · "grok-imagine-image"
grokImagineParams.image	string (URL)	Reference image (URL)

Grok versions

Every Grok image model on Apiframe. Switch with one parameter.

Use cases

What teams build with Grok Image Fast.

Volume generation

At a flat 2 credits (≈$0.02) and ~8-second turnarounds, Grok Image Fast is the cheapest Grok path on Apiframe to fill a feed, test creative, or seed a dataset.

Step up to Grok Image 2 when it counts

Need 2K and a quality control? Switch the model id to grok-image. Same family, same key.

First frame for Grok Video

Generate the still here, then animate it with Grok Video 1.5, one pipeline, one provider aesthetic, one API key.

A natural, less synthetic look

Grok’s output leans photographic rather than overpolished, which suits UGC-style and editorial contexts.

Reviews

9,800+ developers. One API.

Real Apiframe reviews from Trustpilot and G2.

Speeds up our ad creative iteration

The API integrates directly into my existing pipeline, so I can generate and iterate on image variations for Meta ads without jumping between tools. We can go from concept to a testable ad in the same day instead of spreading it across a week.

Ethan M. July 2026 G2

Fast, reliable, easy to integrate

Image generation requests are processed quickly, and the results are consistently high quality. Customer support has also been responsive whenever I had questions. It has saved me a lot of development time.

Nana Arianto July 2026 Trustpilot

Seamless integrations, effortless setup

Generating ad creatives for Facebook and Google ads is more streamlined now since we use APIFRAME to manage the workflow, which used to require a lot of time with official APIs. The initial setup was very easy, just a matter of using curl.

Bean A. July 2026 G2

Grok Image Fast questions

What teams ask before shipping with Grok Image Fast. Everything else lives in the docs.

Can Grok generate images?

Yes. Grok Image Fast creates images from text prompts and also edits existing ones with natural language. For higher-fidelity 2K work, use Grok Image 2.

What engine powers it?

xAI's Aurora model, an autoregressive mixture-of-experts system now in its Aurora-2 generation.

Can it edit images, not just generate them?

Yes. It supports natural-language edits, combining multiple reference images, style transfer, and multi-turn refinement.

Should I use this or Grok Image 2?

Use Grok Image Fast for cheap, quick drafts. Use Grok Image 2 (grok-image) when you want 2K output, a quality control, and tighter instruction following.

How much does it cost?

On Apiframe, a flat 2 credits ($0.02) per image, whether you generate or edit.

Where can you access it?

Through Apiframe, as well as the Grok app and the xAI API.