OpenResponses is a native iPhone client for the OpenAI Responses API built for people who want full control, clear observability, and modern tool support. Bring your own API key, stream responses in real time, inspect every request, and use the latest OpenAI models in a fast SwiftUI interface.
Model Lineup
- GPT-5.4, GPT-5.3, GPT-5.2, GPT-5.1, GPT-5, and GPT-5-mini
- o3 and o4-mini reasoning models with configurable effort
- GPT-4.1 family, GPT-4o, and gpt-image-1
What Makes It Different
- Real-time streaming with activity feed, token usage, and Assistant Thinking traces
- Request Inspector for payloads, tool calls, and raw Responses API details
- Explore Demo so new users can try the interface before adding an API key
- Prompt Library, advanced model controls, exports, and local conversation history
- Message quick actions plus direct camera, photo, file, and document attachments
Tools Included
- Web Search with live sources
- Code Interpreter for Python, analysis, charts, and artifacts
- Image Generation with gpt-image-1
- File Search and vector store workflows
- Computer Use preview with explicit approval steps
- Direct Notion integration and Apple system tools when you choose to enable them
Built for Apple
- Calendar, Contacts, and Reminders tools when you enable them
- Permissions shown only when related features are used
- SwiftUI experience with Dark Mode, Dynamic Type, and VoiceOver support
Privacy
- Your OpenAI API key is stored in the iOS Keychain
- Before the first live AI request, the app shows an in-app OpenAI data sharing notice and requires explicit approval
- No required account
- Conversation history stays on device unless you choose to send or export it
AI output can be inaccurate or outdated. Verify important information before acting.
Requirements
- iOS 17.0 or later
- Your own OpenAI API key with active billing
