Technical / Code-First Frameworks · Updated 15 June 2026

Top Frameworks

Ranked by real-world demand. As of 15 June 2026, LangChain is the most-sought framework — index 77.0 of 100.

Framework finder

Which agent framework should you use?

There are 25 on the board. Answer 3 quick questions and get the 2–3 that actually fit how you build — not just the most popular.

How these frameworks differ

The board ranks by demand. This map places each tool by low-level / composable → high-level / opinionated and single-agent → multi-agent team, so you can choose by fit, not just popularity.

← Low-level / composable High-level / opinionated → ↑ Multi-agent team ↓ Single-agent Compose your own agents Opinionated crews Low-level single agent Batteries-included LangChain LangChain LangGraph LangGraph Haystack Haystack LlamaIndex LlamaIndex Google ADK Google ADK CrewAI CrewAI Microsoft AutoGen Microsoft AutoGen OpenAI Agents SDK OpenAI Agents SDK DSPy DSPy Agno Agno Semantic Kernel Semantic Kernel Spring AI Spring AI Pydantic AI Pydantic AI Mastra Mastra smolagents smolagents Letta (MemGPT) Letta (MemGPT) CAMEL CAMEL Anthropic Claude Agent SDK Anthropic Claude Agent SDK Griptape Griptape Strands Agents Strands Agents OpenAI Swarm OpenAI Swarm Marvin Marvin Guidance Guidance Atomic Agents Atomic Agents Eliza (elizaOS) Eliza (elizaOS)
#ToolIndexDemandGitHub ⭐Searches/mo
1 LangChain 77.0 180k 61k
2 LangGraph 64.0 38k 33k
3 Haystack 63.1 26k 4.6k
4 LlamaIndex 60.2 53k 8.1k
5 Google ADK 59.0 20k 9.9k
6 CrewAI 58.8 54k 6.6k
7 Microsoft AutoGen 55.7 59k 6.6k
8 OpenAI Agents SDK 55.1 30k 5.4k
9 DSPy 53.1 35k 8.1k
10 Agno 52.4 41k 2.9k
11 Semantic Kernel 50.6 28k 2.4k
12 Spring AI 50.1 8.9k 4.4k
13 Pydantic AI 48.8 18k 415
14 Mastra 46.1 25k —
15 smolagents 45.5 28k 1.6k
16 Letta (MemGPT) 45.0 23k —
17 CAMEL~ 42.9 17k 2.7k
18 Anthropic Claude Agent SDK~ 41.9 8.8k —
19 Griptape 40.2 2.5k 1.4k
20 Strands Agents 39.0 6.1k —
21 OpenAI Swarm 38.1 22k —
22 Marvin~ 36.5 6.2k 460
23 Guidance~ 31.1 21k 20
24 Atomic Agents 27.9 6k —
25 Eliza (elizaOS) 22.6 19k —

Index = market demand (search + AI demand) weighted most heavily, then adoption, real usage, momentum, production-readiness and community. ◇ proprietary / closed-source (no public repo — scored on demand). ~ demand estimated from product-site traffic. Methodology → · All boards →

Common questions

Top Frameworks — frequently asked questions

What is the best framework right now?

As of 15 June 2026, LangChain is the most-sought framework on the Agent Reality Index, scoring 77.0 of 100. "Best" here means the strongest real-world demand and adoption rather than an editorial pick — the full board ranks the top 25.

How is the Frameworks ranking calculated?

Each tool gets a 0–100 score weighted most heavily toward real-world market demand (search and AI-search volume), then developer adoption, real usage, momentum, production-readiness, and community — rather than GitHub stars or vendor claims.

How many frameworks are ranked, and how often is the board updated?

The board ranks 25 frameworks and is rebuilt monthly from fresh demand and adoption data. It was last updated 15 June 2026.