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Add Codex GPT 5.5 image support (#991)

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Aleksei 2026-05-12 05:26:13 +03:00 • committed by GitHub
parent c90cb8ebda
commit ea44ca049e
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3 changed files with 53 additions and 1 deletions
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1
open-sse/config/providerModels.js
View file

@ -58,6 +58,7 @@ export const PROVIDER_MODELS = {
{ id: "gpt-5-codex", name: "GPT 5 Codex" },
{ id: "gpt-5-codex-mini", name: "GPT 5 Codex Mini" },
// Image models (uses image_generation tool, requires Plus/Pro plan)
{ id: "gpt-5.5-image", name: "GPT 5.5 Image", type: "image", capabilities: ["text2img", "edit"], params: ["size", "quality", "background", "image_detail", "output_format"] },
{ id: "gpt-5.4-image", name: "GPT 5.4 Image", type: "image", capabilities: ["text2img", "edit"], params: ["size", "quality", "background", "image_detail", "output_format"] },
{ id: "gpt-5.3-image", name: "GPT 5.3 Image", type: "image", capabilities: ["text2img", "edit"], params: ["size", "quality", "background", "image_detail", "output_format"] },
{ id: "gpt-5.2-image", name: "GPT 5.2 Image", type: "image", capabilities: ["text2img", "edit"], params: ["size", "quality", "background", "image_detail", "output_format"] },

2
open-sse/handlers/imageProviders/codex.js
View file

@ -4,7 +4,7 @@ import { nowSec } from "./_base.js";
const CODEX_RESPONSES_URL = "https://chatgpt.com/backend-api/codex/responses";
const CODEX_USER_AGENT = "codex-imagen/0.2.6";
const CODEX_VERSION = "0.122.0";
const CODEX_VERSION = "0.129.0";
const CODEX_ORIGINATOR = "codex_cli_rs";
const CODEX_MODEL_SUFFIX = "-image";
const CODEX_REF_DETAIL = "high";

51
tests/unit/image-generation.test.js
View file

@ -284,6 +284,57 @@ describe("handleImageGenerationCore", () => {
expect(responseBody.data[0].b64_json).toBeTruthy();
});
it("generates image with Codex gpt-5.5-image using current Codex version header", async () => {
global.fetch.mockResolvedValueOnce(
new Response(
[
"event: response.output_item.done",
'data: {"item":{"type":"image_generation_call","result":"base64codeximage"}}',
"",
"",
].join("\n"),
{ status: 200, headers: { "Content-Type": "text/event-stream" } }
)
);
const result = await handleImageGenerationCore({
body: {
prompt: "A green square",
size: "1024x1024",
output_format: "png",
},
modelInfo: { provider: "codex", model: "gpt-5.5-image" },
credentials: {
accessToken: "codex-token",
providerSpecificData: { chatgptAccountId: "account-123" },
},
log: null,
});
expect(result.success).toBe(true);
expect(global.fetch).toHaveBeenCalledWith(
"https://chatgpt.com/backend-api/codex/responses",
expect.objectContaining({
method: "POST",
headers: expect.objectContaining({
authorization: "Bearer codex-token",
"chatgpt-account-id": "account-123",
version: "0.129.0",
}),
})
);
const fetchCall = global.fetch.mock.calls[0];
const requestBody = JSON.parse(fetchCall[1].body);
expect(requestBody.model).toBe("gpt-5.5");
expect(requestBody.tools).toEqual([
{ type: "image_generation", output_format: "png", size: "1024x1024" },
]);
const responseBody = await result.response.json();
expect(responseBody.data[0].b64_json).toBe("base64codeximage");
});
it("generates image with Cloudflare Workers AI JSON response", async () => {
global.fetch.mockResolvedValueOnce(
new Response(