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Alternatives to Marvin

Marvin is an agent framework by Prefect: Python framework for structured LLM outputs and agentic workflows built from tasks, agents and threads. If it doesn't fit your setup, these 12 agent frameworks cover similar ground. They are ordered by how closely they match Marvin and by our rank, which weighs adoption, freshness and documentation; money never changes the order. Agent Squad leads the list (more recently active (freshness A); supports TypeScript and Swift). Each entry shows data reasons to switch, and you can open a side-by-side comparison with Marvin.

Updated Oct 26, 2026 · Built from catalog data; how we rank and grade

You're replacing

Marvin

Python framework for structured LLM outputs and agentic workflows built from tasks, agents and threads.

12 alternatives

Ordered by how closely each matches Marvin (shared product, category or stated alternative) and by rank.

  1. 1
    Agent Squad

    2FastLabs

    Open-source framework that routes each user query to one of several AI agents, with Python, TypeScript and Swift runtimes.

    • More recently active (freshness A)
    • Supports TypeScript and Swift

    ★ 7.8K↓ 1.5K/wkLast active Oct 2, 2026Compare →

  2. 2
    Pipecat

    Daily

    Open-source Python framework for real-time voice and multimodal agents, built from composable pipelines with handoffs between specialist agents.

    • More recently active (freshness A)
    • More GitHub stars (16.8K)

    ★ 16.8K↓ 373.6K/wkLast active Oct 24, 2026Compare →

  3. 3
    OGX (formerly Llama Stack)

    OGX

    OpenAI-compatible agentic API server for inference, vector stores, files and skills, on any model or infrastructure.

    • More recently active (freshness A)

    ★ 8.4K↓ 14.2K/wkLast active Oct 24, 2026Compare →

  4. 4
    txtai

    NeuML

    All-in-one Python AI framework for embeddings-based semantic search, LLM pipelines, workflows and agents.

    • More recently active (freshness A)
    • More GitHub stars (13K)

    ★ 13K↓ 3.3K/wkLast active Oct 22, 2026Compare →

  5. 5
    Microsoft Agent Framework

    Microsoft

    Open framework for building and hosting production-grade AI agents and multi-agent workflows in .NET and Python.

    • More recently active (freshness A)
    • More GitHub stars (14.3K)
    • Supports C# and Go

    ★ 14.3K↓ 47.6K/wkLast active Oct 24, 2026Compare →

  6. 6
    LlamaIndex

    LlamaIndex

    Open-source Python toolkit for RAG and agents over your own data, with event-driven workflows and 300+ integration packages.

    • More recently active (freshness A)
    • More GitHub stars (52.6K)

    ★ 52.6K↓ 1.4M/wkLast active Oct 14, 2026

  7. 7
    LangChain

    LangChain

    Python framework of interoperable components and integrations for building agents and LLM apps, with LangGraph and Deep Agents layered above it.

    • More recently active (freshness A)
    • More GitHub stars (148.4K)

    ★ 148.4K↓ 37.3M/wkLast active Oct 24, 2026

  8. 8
    Pydantic AI

    Pydantic

    Typed Python SDK for building agents with swappable model providers, plus optional capabilities for memory, sub-agents, planning and durable execution.

    • More recently active (freshness A)
    • More GitHub stars (20.8K)

    ★ 20.8K↓ 1.5M/wkLast active Oct 24, 2026

  9. 9
    Google Agent Development Kit (ADK)

    Google

    Open-source toolkit for building, evaluating and deploying agents in Python, TypeScript, Go, Java and Kotlin, tuned for Gemini but model-agnostic.

    • More recently active (freshness A)
    • More GitHub stars (22K)
    • Supports TypeScript and Go

    ★ 22K↓ 2.4M/wkLast active Oct 24, 2026

  10. 10
    Agno

    Agno

    Python framework and runtime for building agents, serving them over a REST API and MCP server, and managing them from a web control plane.

    • More recently active (freshness A)
    • More GitHub stars (42.9K)

    ★ 42.9K↓ 519.4K/wkLast active Oct 24, 2026

  11. 11
    Genkit

    Google

    Open-source Firebase framework for AI features and agent workflows in JavaScript, Go, Python and Dart, with model plugins.

    • More recently active (freshness A)
    • Supports TypeScript and JavaScript

    ★ 6.5K↓ 95.8K/wkLast active Oct 23, 2026

  12. 12
    Strands Agents

    AWS

    Open-source Python and TypeScript SDK for model-driven agents, with tools, MCP, multi-agent patterns and streaming.

    • More recently active (freshness A)
    • Supports TypeScript

    ★ 8.9K↓ 8.9M/wkLast active Oct 24, 2026

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