Tachikoma

Why it's ranked here

The scope is unusually broad for a Swift package, and the modular products keep optional agent, audio, and protocol features separate. Mocked end-to-end tests strengthen the case. However, several ambitious documents describe plans or outdated surfaces, so the maintained guides deserve more trust than every example.

What's good

Strict concurrency and sendable types address risks that matter in modern Swift applications. Streaming uses asynchronous sequences, tools support typed values and multi-step execution, and provider tests can run without credentials through mocked networking. Custom compatible endpoints also reduce dependence on the built-in model catalog.

Tradeoffs

Swift 6.2 and recent Apple deployment floors exclude older projects. Hosted models still require provider credentials, network access, and quota. Realtime audio leaves microphone permissions, capture, and conversion to the host application. Native Azure support is described as an implementation plan, not established functionality.

How to use it well

Choose it for a Swift application that may switch providers, stream responses, or add tools and conversation state. Start with the core library, then link agent, audio, or protocol modules only when required. It does not host models, capture microphone input, or remove provider billing and credentials.

Observed

License

MIT

Primary language

Swift

Packaging

Swift package distributed through Swift Package Manager

Library interfaces

Core, agent, audio, and Model Context Protocol library products

Command-line interfaces

Three executable products cover GPT-5 usage, general AI usage, and configuration or authentication

Platform support

Declared targets include macOS, iOS, tvOS, watchOS, and visionOS; Linux builds are covered by CI

Testing structure

Separate core and Model Context Protocol test targets, with mocked and opt-in live provider tiers