Grok Image API (grok-imagine-1.5-apimart)

$0.015 per image, edits included — one OpenAI-compatible endpoint at https://api.apimart.ai/v1, no monthly plan required. (observed 2026-09-17)

Get an API key · Live pricing · Model page · ⚡ 60-second quickstart

Why teams call Grok Imagine 1.5 (grok-imagine-1.5-apimart) through APIMart

• One key, entire catalog. The same https://api.apimart.ai/v1 base URL and Authorization header reach Grok Imagine 1.5 (grok-imagine-1.5-apimart) and 300+ other image, video and language models — switch the model field, not your client.
• $1 minimum, pay as you go. No subscription and no prepaid plan to size up front: top up from $1 and spend it on calls. There is no free quota to burn through first, so the price in this table is the price you pay.
• The charge comes back in the response. Every call reports the amount billed (cost / credits_cost), so a spend number is read per call instead of guessed at month end.
• Async by design. Submit, take the task_id, poll GET /v1/tasks/{id} — batching and retries are ordinary queue work, not a bespoke integration.

Grok Image on APIMart is the async Grok Imagine route: text-to-image plus reference-based editing, five aspect ratios, and up to 10 images per request — the batch behaviour is the unusual part.

Model id and routes

Route	model value	Billing	Notes
Per-image (default here)	grok-imagine-1.5-apimart	per delivered image, by resolution	alias grok-imagine-1.5-ext is documented as equivalent
Token-billed official	``	per million tokens	no official_fallback on this id

Endpoint: POST https://api.apimart.ai/v1/images/generations (OpenAI-compatible), then poll GET /v1/tasks/{task_id}. Result links are valid for 24 hours.

Pricing

Output	List price	Effective price
default	$0.0187	$0.015

What that costs at scale

Spend	Cost
100 images	$1.50
1000 images	$15.00
10000 images	$150.00

Linear at the observed per-unit rate, no volume discount assumed. Snapshot 2026-09-17; re-check the live table before committing a budget.

Prices are a snapshot; the pricing page and data/model.json are refreshed by CI, and a completed task reports the exact amount in its cost field.

Request parameters

Field	Type	Default	Notes
model	string	required	grok-imagine-1.5-apimart (alias grok-imagine-1.5-ext); the sibling ids grok-imagine-image and grok-imagine-image-quality are documented on the same endpoint
prompt	string	required	supports multiple languages; describes the image or the edit
size	string	1:1	1:1, 16:9, 9:16, 3:2, 2:3
n	integer	1	1–10 images per request on this route; must be a plain number
image_urls	string[]	—	1–5 publicly reachable reference URLs for editing; local files must be uploaded first
nsfw_check	boolean	false	runs omni-moderation-latest before submitting

Supported aspect ratios: 1:1, 16:9, 9:16, 3:2, 2:3.

Quickstart

curl --request POST --url https://api.apimart.ai/v1/images/generations \
  --header "Authorization: Bearer $APIMART_API_KEY" --header 'Content-Type: application/json' \
  -d '{"model":"grok-imagine-1.5-apimart","prompt":"A bamboo forest path under moonlight","size":"1:1","resolution":"1K","n":1}'

import os, time, requests

BASE = "https://api.apimart.ai/v1"
HEADERS = {"Authorization": f"Bearer {os.environ['APIMART_API_KEY']}", "Content-Type": "application/json"}

created = requests.post(f"{BASE}/images/generations", headers=HEADERS, timeout=60, json={
    "model": "grok-imagine-1.5-apimart", "prompt": "A bamboo forest path under moonlight",
    "size": "1:1", "resolution": "1K", "n": 1,
}).json()
task_id = created["data"]["id"]

while True:
    task = requests.get(f"{BASE}/tasks/{task_id}", headers=HEADERS, timeout=60).json()["data"]
    if task["status"] in ("completed", "failed"):
        break
    time.sleep(5)
print(task.get("cost"), task.get("result", {}).get("images", [{}])[0].get("url"))

const res = await fetch("https://api.apimart.ai/v1/images/generations", {
  method: "POST",
  headers: { Authorization: `Bearer ${process.env.APIMART_API_KEY}`, "Content-Type": "application/json" },
  body: JSON.stringify({ model: "grok-imagine-1.5-apimart", prompt: "A bamboo forest path under moonlight",
                          size: "1:1", resolution: "1K", n: 1 }),
});
const { data } = await res.json();      // data.id is the task id — poll /v1/tasks/<id>

Runnable versions: examples/. The task lifecycle is pending → processing → completed | failed, and the finished task carries cost, credits_cost and expiring result URLs.

Sample outputs

Every render below came from a single call with the model id above, at the ratio shown; the cost column is what the task reported.

Output	Recipe	Ratio	Cost	Prompt
	Product	1:1	$0.015	Two frosted glass cosmetics bottles on a pale sand surface, hard afternoon light casting long shadows, minimal styling, commercial product photography
	Cinematic	16:9	$0.015	Cyberpunk motorbike parked in a neon-lit underpass, rain on asphalt, magenta and cyan rim lights, cinematic still, shallow depth of field
	Concept art	3:2	$0.015	Mythic forest creature concept art, antlered guardian covered in moss and small flowers, soft volumetric light through trees, painterly detail
	Poster / graphic	3:4	$0.015	Retro travel poster illustration of a coastal train route, flat colour blocks, textured paper grain, warm sunset palette, bold graphic composition
	Food	4:3	$0.015	Gourmet chocolate dessert with gold leaf on a dark ceramic plate, moody side light, shallow depth of field, fine dining food photography
	Environment	16:9	$0.015	Aerial view of a fantasy cliff city carved into stone terraces above a turquoise sea, tiny bridges and hanging gardens, cinematic haze, epic scale

Recipes and measured costs are also in data/samples.json.

First-call troubleshooting

Symptom	Likely cause	Fix
401 / invalid api key	key missing, truncated, or a stray newline pasted into the header	Re-copy it from the console; the header is Authorization: Bearer $APIMART_API_KEY
balance / credit error	the account has no balance	Top up from $1 in the console — there is no free quota to fall back on
429	concurrent requests on one key	Back off, then retry the same request with the same Idempotency-Key
400 / model not found	wrong route for the id: the per-unit alias needs its version, the official id must not send one	Copy the exact model value from the route table above
task ends failed	prompt rejected by the filter, or a reference image URL expired	Re-submit with a new Idempotency-Key and re-host the reference image
result URL stops working	result links expire	Download the file as soon as the task reports completed

FAQ

What is the Grok Image API model id?

grok-imagine-1.5-apimart, with the documented alias grok-imagine-1.5-ext. The endpoint also documents grok-imagine-image and grok-imagine-image-quality.

Can I get several images in one request?

Yes — this route accepts n from 1 to 10, which makes it the cheapest way to explore variations. Most other image routes cap n at 1, so fan-out there has to happen client-side.

How does editing work?

Pass 1–5 publicly reachable image URLs in image_urls and describe the change in prompt. Only absolute http(s) URLs are accepted, so upload local files to your own storage first.

How long do result links last?

Generated links are valid for 24 hours; download and store the output as part of the job.

Related searches

• grok image api
• grok imagine api
• grok image api pricing
• grok imagine api key
• grok image editing api
• image generation api
• ai image api

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Start with $1. Get an API key → check live pricing → open Grok Imagine 1.5 (grok-imagine-1.5-apimart) in the model library. The first call is three steps: submit, poll task_id, read the charged amount off the response.

Attributed links (how this repository is measured)

Purpose	Attributed link	Target
Open Grok Image on APIMart	https://go.apimart.ai/k-1a274e	docs.apimart.ai model page
Current pricing page	https://go.apimart.ai/k-4f6dcd	apimart.ai/pricing
Get an API key	https://go.apimart.ai/k-a96fe3	apimart.ai/keys

Outbound APIMart links are minted through the promo link API; hand-made tracking parameters are rejected by tools/check_links.py in CI.

Disclosure

Grok Image is a third-party model served through APIMart; this repository documents how to call it and publishes real outputs, model ids and prices, and does not claim official status. Model names, prices and documentation belong to their respective owners. Endpoint reference: https://docs.apimart.ai/en/api-reference/images/grok-imagine/generation.

Repository map

README.md             model id, pricing, parameters, quickstart, samples, FAQ
data/model.json       the pricing record for this model (CI-refreshed)
data/samples.json     prompt recipes with measured cost
tools/snapshot.py     refresh this model's prices from the public pricing payload
tools/check_links.py  attribution guard
examples/             curl, Python and JavaScript clients
assets/               real sample renders (JPEG, resized for the README)
.github/workflows/    daily price refresh + validation

License

MIT — see LICENSE.