GPT Image 2.5 to Figma with Codex and Astra

GPT Image 2.5 can create a website concept; Codex with GPT-6 Astra and Computer Use can rebuild it in Figma. The acceptance criterion is editable text, buttons and containers—not a PNG stretched across a frame.

Use an official subscription path when your account already has the needed model and Computer Use. The alternative is an Image 2.5 API call through BetterToken plus a clean API configuration for Astra. Plugin availability, application permissions and Figma access remain separate checks. The X example by Hideki Kobayashi is its author’s example, not our end-to-end test or a guarantee of exact reconstruction.

Build one inspectable concept

Start with one desktop screen: navigation, heading, primary button and several cards. Keep exact copy outside the image so it can become Figma text layers. Generate one image, open the PNG, and verify that it is readable and useful as a reference; the requested size is not evidence of the delivered size.

Choose Flare for a first concept and Sunburst where editing precision matters. In BetterToken Workspace, select a key that has the required image-model group; a key for one group is not automatically valid for the Astra step. Use one paid request with n=1, a 300-second timeout, no automatic retry, and stop after the PNG. Inspect request history and charges before retrying a timeout.

Configure and verify Codex separately

Back up config.toml and auth.json, merge the provider settings without duplicate TOML tables, and keep the API key local. API-key authentication does not itself prove access to Computer Use. Restart Codex, send a short message to verify the model connection, then separately confirm that Computer Use can see Figma.

Use a separate Figma file or page, sign in yourself, and never give the agent passwords or API keys. First ask it to identify the open file and visible layers without writing. For the build, restrict it to a named new page and require native text, buttons, containers and auto layout; photos may remain image fills.

Accept an editable design

Change the heading to a longer string, resize and relabel the button, and narrow the main frame. Check that text does not overlap and that layer names are understandable. If the result is only an imported PNG, rebuild one section with native layers. A model or 401 error calls for checking the API configuration and key access; a failure to control the app calls for checking Computer Use permissions.

Exact values and references

When CODEX_HOME is set, use that directory; the usual Windows location is %USERPROFILE%\\.codex.

Use gpt-image-2.5-flare or gpt-image-2.5-sunburst for the image step, and gpt-6-astra for the Codex step. The public catalog snapshot is dated 10 September 2026: each image call is $0.05, five calls are $0.25, and the GPT group multiplier is 0.68. Astra rates per million tokens are $6.80 / $34.00 / $0.68 / $8.50 up to 272,000 tokens and $13.60 / $51.00 / $1.36 / $17.00 above that threshold. These are a snapshot, not a promised final bill. Verify the current catalog, key conditions, actual usage, and access to the required groups.

References: https://bettertoken.ai/pricing · https://bettertoken.ai/api/pricing · https://bettertoken.ai/workspace · https://docs.bettertoken.ai/api-reference/images-generations · https://docs.bettertoken.ai/ai-tools/codex · https://openai.com/index/introducing-chatgpt-images-2-5/ · https://developers.openai.com/api/docs/models/gpt-image-2.5-flare · https://developers.openai.com/api/docs/models/gpt-image-2.5-sunburst · https://learn.chatgpt.com/docs/computer-use · https://help.figma.com/hc/en-us/articles/360040451373-Guide-to-auto-layout

Copyable implementation samples

The following samples are intentionally retained without edits. Do not expose a key, repeat a failed paid request automatically, or treat a chat response as proof that Computer Use can control Figma.

Create a flat desktop website design concept for a fictional interior
design studio called Northline. Show one screen, not a browser mockup.
Use an off-white background, dark green accents and a clean grid.
Include a navigation bar, a hero heading, one primary button and three
service cards. No perspective, device frame or decorative UI overlays.
Use these exact labels:
Navigation: Projects | Services | About
Heading: Spaces for everyday life
Button: Discuss a project
Cards: Homes | Workspaces | Consultation
Keep text readable and leave enough space between sections.

Создай и запусти в текущей папке Node.js-скрипт generate-design.mjs,
который получит одну концепцию веб-страницы через API BetterToken.
Используй HTTP API, не встроенный инструмент генерации изображений Codex.

Дизайн: один плоский экран сайта вымышленной интерьерной студии Northline,
без рамки браузера и перспективы. Фон молочно-белый, акценты тёмно-зелёные,
чёткая сетка. Навигация: Projects | Services | About.
Заголовок: Spaces for everyday life. Кнопка: Discuss a project.
Три карточки: Homes | Workspaces | Consultation.

POST https://www.bettertoken.ai/v1/images/generations
Content-Type: application/json
Authorization: Bearer <значение BETTERTOKEN_IMAGE_API_KEY>
Параметры: model="gpt-image-2.5-flare", size="1536x1024", n=1,
response_format="b64_json", output_format="png".

Сначала проверь Node.js и наличие переменной BETTERTOKEN_IMAGE_API_KEY,
не выводя её значение. Если ключ недоступен, объясни, как безопасно задать
его локально для процесса запуска; не проси присылать ключ в чат.
Не читай другие хранилища учётных данных и не меняй настройки Codex.
Используй встроенные средства Node.js, без установки зависимостей.
Не перезаписывай существующие файлы: при совпадении выбери новое имя.

Когда окружение готово, выполни ровно один платный запрос, n=1,
с тайм-аутом 300 секунд. Не повторяй запрос автоматически при ошибке
или тайм-ауте; сообщи статус и предложи проверить списания до повтора.
Не выводи ключ, заголовок Authorization или полный ответ с base64.
Декодируй data[0].b64_json и сохрани website-concept.png.
Проверь, что PNG открывается, покажи изображение и его фактические размеры,
укажи путь к скрипту и PNG. При неудаче не заявляй об успешной генерации.
На этом остановись: Figma пока не открывай и не изменяй.

import { writeFile } from "node:fs/promises";

const apiKey = process.env.BETTERTOKEN_IMAGE_API_KEY;
if (!apiKey) throw new Error("Set BETTERTOKEN_IMAGE_API_KEY locally");

const prompt = `Create a flat desktop website design concept for a fictional
interior design studio called Northline. Show one screen without a browser
or device frame. Use an off-white background, dark green accents and a
clean grid. Include navigation, a hero heading, one button and three cards.
Exact navigation: Projects | Services | About.
Exact heading: Spaces for everyday life.
Exact button: Discuss a project.
Exact card labels: Homes | Workspaces | Consultation.
Keep text readable and leave enough space between sections.`;

const response = await fetch("https://www.bettertoken.ai/v1/images/generations", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${apiKey}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    model: "gpt-image-2.5-flare",
    prompt,
    size: "1536x1024",
    n: 1,
    response_format: "b64_json",
    output_format: "png",
  }),
  signal: AbortSignal.timeout(300000),
});

if (!response.ok) throw new Error(`Image request failed: HTTP ${response.status}`);
const result = await response.json();
const encoded = result.data?.[0]?.b64_json;
if (!encoded) throw new Error("Response has no data[0].b64_json");
const base64 = encoded.replace(/^data:[^;]+;base64,/, "");
await writeFile("website-concept.png", Buffer.from(base64, "base64"));
console.log("Saved website-concept.png");

model_provider = "bettertoken"
model = "gpt-6-astra"
cli_auth_credentials_store = "file"

[model_providers.bettertoken]
name = "BetterToken"
base_url = "https://www.bettertoken.ai/v1"
wire_api = "responses"
requires_openai_auth = true
supports_websockets = false

{
  "auth_mode": "apikey",
  "OPENAI_API_KEY": "YOUR_API_KEY"
}

Use Computer Use to rebuild the attached website-concept.png in the Figma
Design file I have opened for this task. Work only on a new page named
Northline concept. Do not modify other pages, share the file or publish it.

Create a desktop frame 1440 px wide. Use the image as a visual reference.
Rebuild navigation, heading, button and service cards with native Figma
layers. Do not use a full-page image as the finished design.

Use these exact texts:
Projects | Services | About
Spaces for everyday life
Discuss a project
Homes | Workspaces | Consultation

Use editable text and auto layout where content must resize. Make the
primary button reusable. Keep photos as image fills if needed; do not
pretend they have become editable vectors.

First build the navigation and hero, inspect them, then continue with the
three cards. Match the reference proportions, colours and spacing. If a
font is unavailable, report it and use an available substitute.

At the end, verify that the title can be edited, the button can be resized
and the frame can be narrowed without overlapping text. Report any
remaining differences and the page/frame names so I can inspect them.