Opennan

GPT Image 1.5

Live on the API
by OpenAIImagegpt-image-1-5

$0.026/image$0.034-23%

MediumPrices checked Oct 15, 2026
Input → output
Text promptImageImage
Quality
medium

GPT Image 1.5

OpenAI

from $0.026/image · 23% below official

Input

74 / 4,000
0/10

Drop, paste or upload an image, or paste a public https link.

Quality
Aspect ratio

-23% vs official

Output

Example
Example outputMade with this promptA ceramic bowl of fresh lemons on a linen cloth, still life, soft daylight

GPT Image 1.5 API prices

Every tier we sell, next to the model maker's official price.

All prices
GPT Image 1.5 prices by tier, in US dollars
TierOpennanOfficial
Medium$0.026$0.03423% below

Official is the model maker's own list price for the same tier. Where the maker publishes a price, we never sell above it, most tiers at least 10% below.

Call GPT Image 1.5 from your code

Everything for your first call is on this page: the endpoint, a key, the request and every parameter.

POSThttps://api.opennan.com/v1/images/generations

  1. Get an API key

    Create a key in the console. It uses the same balance as the playground.

    Create a key

  2. Send your first request

    The same request the playground sends. Set OPENNAN_KEY to your key.

    curl https://api.opennan.com/v1/images/generations \
  -H "Authorization: Bearer $OPENNAN_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-image-1-5","prompt":"A glass teapot on a sunlit windowsill, soft morning light, 35mm photo","quality":"medium","aspect_ratio":"1:1"}'

# Then poll until "status" is "succeeded" or "failed":
curl https://api.opennan.com/v1/tasks/<task id> -H "Authorization: Bearer $OPENNAN_KEY"

  3. Poll the task

    The call answers right away with a task id. Ask for the task until it finishes:

    GEThttps://api.opennan.com/v1/tasks/{id}
    queued
    Waiting for a worker
    running
    Being made
    succeeded
    Done: outputs[].url holds the files
    failed
    Failed: you are not charged

Parameters

Built from the live catalog: every value listed here is one the API accepts.

Parameters
NameTypeAllowed valuesDefaultEffect on price
modelrequiredWhich model runs the call.stringgpt-image-1-5——
promptrequiredWhat the image shows.string———
imageoptionalAn image to edit or follow (https link).URL———
qualityoptionalQuality setting.stringmediummedium—
aspect_ratiooptionalFrame shape, for example 16:9 or 9:16.string1:1 · 2:3 · 3:2 · 3:4 · 4:3 · 4:5 · 5:4 · 9:16 · 16:9 · 21:91:1—
callback_urloptionalWe send the finished task to this URL.URL———

Errors and how to fix them

  • 401Missing or wrong key

    Send the header Authorization: Bearer with a key from the console.

  • 402Balance too low

    Add credit in Billing, then send the same call again.

  • 400A value is not accepted

    Read error.message: it names the field. Use a value from the parameter table.

  • 429Too many requests

    Wait a few seconds and try again, waiting longer after each 429.

Add Opennan to your AI app

One install gives your AI every Opennan tool: video, images, chat, voice, music, sound effects, 3D, captions and dubbing. Pick your app and follow the steps.

MCP serverhttps://api.opennan.com/v1/mcp

Works in the Codex CLI, the Codex app and the Codex IDE extension: they share ~/.codex/config.toml. If the app or IDE does not see OPENNAN_KEY, use the config.toml option with your key in it. Codex asks before each tool call: approve it to go on.

  1. Get an API key

    Create a key in the console. It starts with sk- and uses the same balance as the website.

    Create a key

  2. Save your key as OPENNAN_KEY

    # macOS / Linux (zsh shown; bash: ~/.bashrc)
echo 'export OPENNAN_KEY="sk-..."' >> ~/.zshrc
source ~/.zshrc

# Windows (PowerShell), then open a new terminal
setx OPENNAN_KEY "sk-..."

  3. Install the Opennan plugin: the server plus a skill that teaches your AI to pick models, confirm prices and wait for results

    codex plugin marketplace add Opennan/opennan-ai-plugin
codex plugin add opennan@opennan

  4. Or add only the server

    codex mcp add opennan --url https://api.opennan.com/v1/mcp --bearer-token-env-var OPENNAN_KEY

  5. Or add this to ~/.codex/config.toml

    [mcp_servers.opennan]
url = "https://api.opennan.com/v1/mcp"
http_headers = { Authorization = "Bearer sk-..." }

  6. Check that opennan is listed

    codex mcp list

  7. Restart Codex, then ask for anything

    “Make a 5 second video of rain on a neon street, a song to go with it and a poster image.”

Replace sk-... with your own key and keep it private: anyone who has it can spend your balance. Your app can list the tools before you add a key; making anything needs one.

This tool from your AI

Once Opennan is added, your AI calls this tool with arguments like these.

Tool
generate_image
Example arguments
{
  "model": "gpt-image-1-5",
  "prompt": "A glass teapot on a sunlit windowsill, soft morning light, 35mm photo"
}

GPT Image 1.5 API questions

How much does the GPT Image 1.5 API cost?

GPT Image 1.5 API on Opennan: $0.026 per image, 23% below OpenAI's official $0.034 per image. Prices are in US dollars per call, shown before you run, and every tier is in the price table.

How does that compare with the official price?

OpenAI lists $0.034 per image; Opennan charges $0.026 per image, 23% below. We only sell a tier below the maker's official price, most tiers at least 10% below.

What inputs does GPT Image 1.5 take?

Text prompt, Image.

Which options can a call set?

Quality: Medium. Aspect ratios: 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9.

How is it billed?

Per image, by quality and size.

What happens if a generation fails?

A failed task is refunded in full. You pay only for results.

How do I call GPT Image 1.5 from an AI agent?

Add the MCP server https://api.opennan.com/v1/mcp with your API key as a bearer token, then call the generate_image tool with model "gpt-image-1-5". Or send a POST to https://api.opennan.com/v1/images/generations.

Similar models

Image models you can call with the same key.

All models

Same task

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