LanguageModelChatUI

A UIKit chat interface for building LLM-powered conversations on iOS. Supports streaming responses, tool calling, vision inputs, speech-to-text, and markdown rendering out of the box.

Preview

This library was extracted from FlowDown.

Requirements

• iOS 17+
• Swift 6+
• Xcode 16+

Installation

.package(url: "https://github.com/Lakr233/LanguageModelChatUI", from: "0.1.0")

Two products are available:

Product	Description
ChatClientKit	Lightweight client for language model networking APIs
LanguageModelChatUI	Full chat UI built on top of ChatClientKit

Quick Start

import ChatClientKit
import LanguageModelChatUI

// checkout demo app for more
let client = OpenAICompatibleClient(
    model: "your-model-id",
    baseURL: "https://api.example.com/v1",
    path: "/chat/completions",
    apiKey: "your-api-key"
)

let model = ConversationSession.Model(
    client: client,
    capabilities: [.tool, .visual],
    contextLength: 128_000
)

let controller = ChatViewController(
    models: .init(chat: model, titleGeneration: model),
    sessionConfiguration: .init(
        storage: DisposableStorageProvider.shared
    )
)

See the Example/ directory for a complete demo app.

License

MIT License. Copyright (c) 2026 Lakr233.