[Bug]: Image editing broken in v0.8.2-rc3 with GPT-Image-1.5 model

[sidanaabhi]

What happened?

In the latest version of LibreChat, attempting to edit a previously generated image using the GPT-Image-1.5 model fails. Instead of editing the image, the assistant responds with:

"I don't have access to the previously generated image for direct editing. Please upload the cat image you want to modify, and I'll add a small ball to it for you!"

Additionally, the backend returns a 404 Resource Not Found error when attempting the edit operation.

The assistant should be able to reference and edit a previously generated image within the same conversation, as it did in v0.8.2-rc3

Actual Behavior

Image editing fails silently from the user's perspective with the above message.
Backend logs show a 404 Resource Not Found error.
Image generation works correctly; only editing is broken.

Version Information

v0.8.3-rc1

Steps to Reproduce

Configure IMAGE_GEN_OAI_* environment variables (see configuration below).
Generate an image using the GPT-Image-1.5 model.
In the same conversation, ask the assistant to modify the generated image (e.g., "Add a ball to this image").
Observe the error response and backend 404 error.

`- name: IMAGE_GEN_OAI_API_KEY
value:

• name: IMAGE_GEN_OAI_BASEURL
  value: "https://.cognitiveservices.azure.com/openai/deployments/gpt-image-1.5/"
• name: IMAGE_GEN_OAI_MODEL
  value: "gpt-image-1.5"
• name: IMAGE_GEN_OAI_AZURE_API_VERSION
  value: "2024-02-01"`

What browsers are you seeing the problem on?

Microsoft Edge

Relevant log output

{"data":{"error":{"code":"404","message":"Resource not found"}},"headers":{"apim-request-id":"7b434ac3-dcb6-4da3-9492-a84f3176090f","content-length":"56","content-type":"application/json","date":"Wed, 04 Mar 2026 05:13:28 GMT","strict-transport-security":"max-age=31536000; includeSubDomains; preload","x-content-type-options":"nosniff"},"level":"error","message":"[image_edit_oai] Problem editing the image: The server responded with status 404: Request failed with status code 404","stack":"AxiosError: Request failed with status code 404\n    at settle (/app/node_modules/axios/dist/node/axios.cjs:2099:12)\n    at IncomingMessage.handleStreamEnd (/app/node_modules/axios/dist/node/axios.cjs:3307:11)\n    at IncomingMessage.emit (node:events:536:35)\n    at endReadableNT (node:internal/streams/readable:1698:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:82:21)\n    at Axios.request (/app/node_modules/axios/dist/node/axios.cjs:4483:41)\n    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)\n    at async /app/api/app/clients/tools/structured/OpenAIImageTools.js:362:26\n    at async DynamicStructuredTool.call (/app/node_modules/@langchain/core/dist/tools/index.cjs:156:22)\n    at async ToolNode.runTool (/app/node_modules/@librechat/agents/dist/cjs/tools/ToolNode.cjs:132:28)\n    at async Promise.all (index 0)\n    at async ToolNode.run (/app/node_modules/@librechat/agents/dist/cjs/tools/ToolNode.cjs:232:23)\n    at async ToolNode.invoke (/app/node_modules/@librechat/agents/dist/cjs/utils/run.cjs:58:27)\n    at async RunnableSequence.invoke (/app/node_modules/@langchain/core/dist/runnables/base.cjs:1321:33)\n    at async _runWithRetry (/app/node_modules/@langchain/langgraph/dist/pregel/retry.cjs:76:22)","status":404,"timestamp":"2026-03-04T05:13:29.005Z"}

Screenshots

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