Agent Frameworks & Builders
The Agent Frameworks & Builders segment of the agent economy: 20 companies, ranked by X followers.
| Company | Headcount | HC 3m | Traffic/mo | X followers | Last round | Category |
|---|---|---|---|---|---|---|
| LangChain Frameworks (LangChain, LangGraph) and LangSmith for agent engineering | 469 | ▲ 18.7% | 3.2M | 272.6K | $125M Series B | Agent Frameworks & Builders |
| LlamaIndex Framework and cloud for document agents | 105 | ▲ 4.8% | 259.2K | 122.2K | $19M Series A | Agent Frameworks & Builders |
| Zapier Automation platform with Zapier Agents and MCP | 1,530 | ▲ 4.2% | 9.5M | 97.2K | $1.2M Last known: Seed (2012) | Agent Frameworks & Builders |
| n8n Workflow automation platform with AI agents | 1,389 | ▲ 18.9% | 10.8M | 84.9K | $180M Series C | Agent Frameworks & Builders |
| Make Visual automation platform with AI agents | 722 | ▲ 3.0% | 9.3M | 32.1K | — | Agent Frameworks & Builders |
| Flowise Open-source visual builder for AI agents | 2 | ▼ -33.3% | 109.5K | 29K | — | Agent Frameworks & Builders |
| Lindy No-code AI agents for business workflows | 59 | ▼ -1.9% | 398.7K | 25K | $35M Series B | Agent Frameworks & Builders |
| CrewAI Multi-agent orchestration framework and platform | 97 | ▲ 28.2% | 351.6K | 23K | $12M Series A | Agent Frameworks & Builders |
| Dify Open-source platform for agentic workflows | — | — | — | 22.8K | — | Agent Frameworks & Builders |
| Pydantic (Pydantic AI) Pydantic AI agent framework and Logfire observability | 42 | ▲ 11.1% | 301.3K | 21.2K | $12.5M Series A | Agent Frameworks & Builders |
| Gumloop The multiplayer AI agent builder. Let anyone build, IT controls access | 51 | ▲ 6.1% | 808K | 15.3K | $50M Series B | Agent Frameworks & Builders |
| Mastra The Javascript framework for building AI agents, from the Gatsby devs | — | — | — | 15K | — | Agent Frameworks & Builders |
| Agno Framework and runtime for multi-agent systems | 22 | ■ 0.0% | 66.6K | 13K | $5.4M Seed | Agent Frameworks & Builders |
| Letta Platform for stateful agents with long-term memory (ex-MemGPT) | 17 | ■ 0.0% | 62.3K | 10.7K | $10M Seed | Agent Frameworks & Builders |
| Stack AI Enterprise no-code platform to build AI agents | 85 | ▲ 11.8% | 163.4K | 7,016 | — | Agent Frameworks & Builders |
| Relevance AI Build an AI workforce of agents | 107 | ▼ -4.2% | 216.8K | 3,800 | $24M Series B | Agent Frameworks & Builders |
| Inkeep Build AI Agent teammates and automations in code or no-code | 20 | ▼ -16.0% | 5,890 | 1,022 | $13M Seed | Agent Frameworks & Builders |
| Cotera The fastest way to build an AI agent | 16 | ▲ 33.3% | 7,182 | 44 | $500K Pre-Seed | Agent Frameworks & Builders |
| Workflow86 Agentic workflows for complex, long running business operations | 2 | ■ 0.0% | 3,568 | — | — | Agent Frameworks & Builders |
| Microsoft Copilot Studio Microsoft's low-code agent builder | — | — | — | — | — | Agent Frameworks & Builders |
Frameworks (LangChain, LangGraph) and LangSmith for agent engineering
- HC
- 469
- 3m
- ▲ 18.7%
- X
- 272.6K
Framework and cloud for document agents
- HC
- 105
- 3m
- ▲ 4.8%
- X
- 122.2K
Automation platform with Zapier Agents and MCP
- HC
- 1,530
- 3m
- ▲ 4.2%
- X
- 97.2K
Workflow automation platform with AI agents
- HC
- 1,389
- 3m
- ▲ 18.9%
- X
- 84.9K
Visual automation platform with AI agents
- HC
- 722
- 3m
- ▲ 3.0%
- X
- 32.1K
Open-source visual builder for AI agents
- HC
- 2
- 3m
- ▼ -33.3%
- X
- 29K
No-code AI agents for business workflows
- HC
- 59
- 3m
- ▼ -1.9%
- X
- 25K
Multi-agent orchestration framework and platform
- HC
- 97
- 3m
- ▲ 28.2%
- X
- 23K
Open-source platform for agentic workflows
- HC
- —
- 3m
- —
- X
- 22.8K
Pydantic AI agent framework and Logfire observability
- HC
- 42
- 3m
- ▲ 11.1%
- X
- 21.2K
The multiplayer AI agent builder. Let anyone build, IT controls access
- HC
- 51
- 3m
- ▲ 6.1%
- X
- 15.3K
The Javascript framework for building AI agents, from the Gatsby devs
- HC
- —
- 3m
- —
- X
- 15K
Framework and runtime for multi-agent systems
- HC
- 22
- 3m
- ■ 0.0%
- X
- 13K
Platform for stateful agents with long-term memory (ex-MemGPT)
- HC
- 17
- 3m
- ■ 0.0%
- X
- 10.7K
Enterprise no-code platform to build AI agents
- HC
- 85
- 3m
- ▲ 11.8%
- X
- 7,016
Build an AI workforce of agents
- HC
- 107
- 3m
- ▼ -4.2%
- X
- 3,800
Build AI Agent teammates and automations in code or no-code
- HC
- 20
- 3m
- ▼ -16.0%
- X
- 1,022
The fastest way to build an AI agent
- HC
- 16
- 3m
- ▲ 33.3%
- X
- 44
Agentic workflows for complex, long running business operations
- HC
- 2
- 3m
- ■ 0.0%
- X
- —
Microsoft's low-code agent builder
- HC
- —
- 3m
- —
- X
- —
Top movers in category
- Cotera▲ 33.3%
- CrewAI▲ 28.2%
- n8n▲ 18.9%
- LangChain▲ 18.7%
- Stack AI▲ 11.8%
FAQ
What are Agent Frameworks & Builders AI agents?+
Agent Frameworks & Builders covers companies building autonomous or semi-autonomous AI agents for this use case. We currently track 20 of them.
How is the Agent Frameworks & Builders list ranked?+
By default by X followers. Headcount growth comes from Clay enrichment; social metrics from the public X API. Missing data is shown as —.
How often is this updated?+
Weekly. Each company profile shows its own last-verified date.