OpenRouter API Key on iPhone — Free BYOK Chat App

OpenRouter in Ensor at a glance

API	OpenRouter Chat Completions API (https://openrouter.ai/api/v1)
Web search	OpenRouter web search
Image input	Yes
PDF input	Yes
Streaming	Yes
Models	Use any model slug OpenRouter offers, such as openai/…, anthropic/…, google/… or x-ai/…. Ensor can load the current model list after you add your key, or you can type a full provider/model slug.

How to set up OpenRouter on iPhone

Create an API key in OpenRouter settings.
Open Ensor, go to Contacts and tap an AI’s avatar, or create a new AI.
Set Provider to OpenRouter and paste your key into API Key.
Choose a model. Use any model slug OpenRouter offers, such as openai/…, anthropic/…, google/… or x-ai/…. Ensor can load the current model list after you add your key, or you can type a full provider/model slug.
Tap Test Connection, save, and start chatting.

Good to know

Give each OpenRouter model its own contact — for example a GPT contact for writing and a Claude contact for code — all using the same key.
Put several OpenRouter models into one group chat to compare their answers side by side.
Image and PDF input is sent in OpenRouter’s format; whether a model can read it depends on the model you pick.
Requests go directly from your iPhone to OpenRouter. There is no Ensor server in between.

Use OpenRouter alongside other models

Every AI contact in Ensor has its own provider and key, so you can keep OpenRouter next to other models and even put them in the same group chat. Other providers:

Frequently asked questions

Is there an OpenRouter app for iPhone?

Ensor is a free iPhone app that works as an OpenRouter client. Paste your OpenRouter API key, pick any model slug, and chat. Requests go straight from your iPhone to OpenRouter — there is no Ensor server in between.

Can I use different OpenRouter models with one key?

Yes. Create one AI contact per model and reuse the same OpenRouter key. Each contact keeps its own model, system prompt and conversations.

Is Ensor free to use with OpenRouter?

Yes. Ensor is free. Your OpenRouter account bills you for the API usage on your key.

Where is my OpenRouter API key stored?

In the iPhone Keychain, set to this device only. It is never stored in the app database, never exported and never sent anywhere except the provider’s API.

Use your OpenRouter API key on iPhone