What does Immersive Translate do? Do I need a ChatGPT account?

Immersive Translate is a browser extension that translates pages, PDFs, ebooks, and subtitles side by side, and also supports document translation. This page uses the built-in OpenAI service with an AI Code With key — you do not need to sign in to ChatGPT.

Why must I paste the full URL instead of Host and Path?

Immersive Translate's Custom API endpoint expects a full URL with a path. Set it to https://api.aicodewith.ai/v1/chat/completions. Do not split the value into Host and Path.

Why use built-in OpenAI instead of a custom service?

This page uses the official built-in OpenAI entry. Choose OpenAI as the translation service, then fill the custom endpoint and custom model name. Do not switch to a Beta custom service.

Where do I get the API key?

Create an API key in the AI Code With dashboard under Key Management. The key is shown only once, so save it, then paste it into Immersive Translate's APIKEY field.

How do I confirm the setup works?

Click Test this service, then save. In the popup, switch the translation service to OpenAI and choose PDF or text. A normal translation confirms the connection; match the call by time and model in usage records. Copying or saving is not the same as a successful connection.

Immersive Translate × AI Code With

Use AI Code With in Immersive Translate: third-party API / relay setup

This page shows how to connect a third-party API in Immersive Translate so you can translate web pages, PDFs, and subtitles with a custom model.

Install Immersive Translate first, then finish setup in Settings. Enter the key only in the extension, never on this page.

I have Immersive Translate: set it up Install Immersive Translate

OpenAI custom endpoint quick reference4 settings

Custom translation service name: OpenAI
Custom API endpoint: https://api.aicodewith.ai/v1/chat/completions
API Key: sk-xxxxxxxx
Model ID: deepseek-v4-flash

Quick setup

In Immersive Translate Settings, configure built-in OpenAI: paste the full endpoint and key, then a Model ID. About 3 minutes.

Immersive Translate is a browser extension. Open Settings, choose OpenAI in Basic, fill the full endpoint and API key, then check Enter custom model name and paste a Model ID.

Open Immersive Translate Settings
Click the Immersive Translate toolbar icon, then Settings. Choose Basic on the left.
Click the Immersive Translate toolbar icon, then Settings to open Basic settings.
Fill the full endpoint and API key
Set Translation Service to OpenAI. Set the custom service name to OpenAI, the custom API endpoint to https://api.aicodewith.ai/v1/chat/completions (include the full path), then paste the API key.
Quick copy
Custom translation service name
OpenAI
Custom API endpoint
https://api.aicodewith.ai/v1/chat/completions
Open the API key page
Set Translation Service to OpenAI. Set the custom service name to OpenAI, the custom API endpoint to https://api.aicodewith.ai/v1/chat/completions, then paste the API key.
3
Paste the Model ID
Check Enter custom model name and paste a Model ID from the list below. Immersive Translate does not fetch the model list for you.
Copy a Model ID
Immersive Translate does not fetch a model list. Check Enter custom model name, then paste a Model ID from the list below.
Pick a family, then copy a Model ID into the custom model name field. The API endpoint stays the same for every model.
Selected
Provider
Claude
Model ID
claude-sonnet-4-6
The full catalog follows the AI Code With docs and pricing page. Example IDs in screenshots only show where to paste; use an ID from this page.
View the full model list
Test, then translate
Click Test this service first, then save. In the popup, switch the translation service to OpenAI and choose PDF or text. A normal translation confirms the connection — then match the call by time and model in AI Code With usage records.
Click Test this service, then save. In the popup, switch the translation service to OpenAI and choose PDF or text. A normal translation confirms the connection. Match the call by time and model in usage records.
You can also open the document translation page and use the OpenAI service you just configured to translate PDFs, ebooks, or subtitles.

How does Immersive Translate connect to AI Code With?

Immersive Translate talks to an OpenAI-compatible API. Connecting to AI Code With means filling the full endpoint, key, and a Model ID in the built-in OpenAI service:

Open Settings: Click the Immersive Translate toolbar icon, then Settings. Choose Basic on the left.
Choose OpenAI: Set Translation Service to the built-in OpenAI option. Do not use a Beta custom service.
Fill the full endpoint: Set Custom translation service name to OpenAI. Set Custom API endpoint to https://api.aicodewith.ai/v1/chat/completions (include the full path; do not split Host and Path). Then paste the API key.
Paste the Model ID: Check Enter custom model name and paste a Model ID from this page. Immersive Translate does not fetch the model list.
Test, then translate: Click Test this service first, then save. In the popup, switch the translation service to OpenAI and choose PDF or text. A normal translation confirms the connection.

Flow: Immersive Translate extension → built-in OpenAI (full endpoint + custom model name) → AI Code With API. Everything is configured inside the extension. No files to edit.

Frequently asked questions

New to Immersive Translate?

Immersive Translate is a browser extension for side-by-side translation of pages, PDFs, ebooks, and subtitles, plus document translation.

Chrome Web Store

Install Immersive Translate from the Chrome Web Store. Edge can use the same listing. After install, click the toolbar icon, then Settings.

Open the Chrome Web Store

Full install guidance follows the Immersive Translate official site; this site does not host the extension package.

Common error troubleshooting

The most frequent problems fall into 4 categories.

401 / Invalid API Key

Symptom: Test this service or a translation returns 401, Unauthorized, or Invalid API Key.

Cause: Usually the API key is invalid, mistyped, or copied with extra characters.

Go back to Basic settings and re-paste the API key (no extra spaces)
Confirm the key is a valid AI Code With API key
Click Test this service again

Endpoint missing /v1/chat/completions

Symptom: The test fails, or the request hits the wrong path.

Cause: Custom API endpoint was not the full URL. Immersive Translate does not append a Path, so a Host-only value fails.

Set Custom API endpoint to https://api.aicodewith.ai/v1/chat/completions
Do not split the value into Host and Path
Do not omit /v1/chat/completions

Model Not Found / invalid model

Symptom: Test or translation says the model does not exist, or the extension keeps using gpt-4o.

Cause: Enter custom model name is unchecked, or the pasted Model ID does not match the catalog.

Confirm Enter custom model name is checked
Copy the Model ID from this page instead of typing it
Confirm the key can access that model

Test fails / no translation

Symptom: Test this service fails, or the page or PDF never shows a translation.

Cause: Settings were not saved, the popup still uses another service, or the model is unavailable for this key.

Confirm the test succeeds, then save
Switch the popup translation service to OpenAI
Check AI Code With usage records for a matching call

Need the full guide?

Every config parameter, the complete model list, and more troubleshooting live in the AI Code With docs.

Open the AI Code With docs

Use AI Code With in Immersive Translate: third-party API / relay setup

Quick setup

Open Immersive Translate Settings

Fill the full endpoint and API key

Paste the Model ID

Test, then translate