Swarm
A Swift framework for building stateful, multi-agent AI workflows with type-safe tools, crash resilience, and native concurrency.
Swarm
What is Swarm?
Swarm vs Similar AI Tools
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How to use Swarm?
- 1Add Swarm as a Swift package dependency.
- 2Define tools using the @Tool macro with type-safe parameters.
- 3Create agents by providing instructions and tools.
- 4Combine agents into workflows using .step(), .parallel(), .route(), and .repeatUntil().
- 5Run or stream the workflow with the .run() or .stream() method.
Swarm Key Features
- Type-safe tools via @Tool macro with compile-time JSON schema generation
- Multi-agent workflows (sequential, parallel, routed, repeat-until)
- Crash-resilient checkpoints and recovery
- Streaming support via AsyncThrowingStream
- Multiple inference providers: Anthropic, OpenAI, Foundation Models, Ollama, Gemini, etc.
- Built-in memory types (conversation, vector, sliding window, summary, hybrid)
- Guardrails for input and output validation
- Observability with tracers and token metrics
- MCP client and server support
- Durable workflow execution
Swarm Use Cases
- Building multi-step research and summarization pipelines
- Creating conversational agents with context retention
- Parallel evaluation of data from multiple perspectives
- Dynamic routing of tasks to specialized agents
- On-device AI workflows with Foundation Models
Swarm Pricing & Free Credits
Swarm currently operates on a Free model.
This tool is completely free to use
Swarm Pros & Cons
Pros
- Compile-time safety with Swift's strict concurrency
- First-class support for Apple platforms (iOS, macOS, tvOS) and Linux
- Unified abstraction for cloud and on-device LLMs
- Rich workflow graph with checkpointing
- Active community and MIT license
Cons
- Requires Swift 6.2 and newer OS versions
- Limited to Swift ecosystem; Python alternatives are more mature
- Some features (Foundation Models, SwiftData) are Apple-only
What is Swarm best for?
- Swift developers building AI-native apps on Apple/Linux
- Developers needing type-safe agent workflows
- Projects requiring on-device LLM support
Swarm FAQ
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