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Alternatives

Best Stack AI alternatives

10 tools similar to Stack AI, ranked by how closely they match what it does among agent frameworks. 9 have a free option.

Stack AI alternatives at a glance

ToolPricingFree optionAPIOpen sourceCompare
Stack AI(this tool)Enterprise
CrewAIFreemium vs Stack AI
HaystackFreemium vs Stack AI
FlowiseFreemium vs Stack AI
Pydantic AIFree
AgnoFreemium
WorkatoEnterprise
AutoGenFree
OpenHandsFreemium
Scale AIEnterprise
DifyFreemium

Top 10 alternatives to Stack AI

CrewAI logo

CrewAI

Free

Agent frameworks

The open platform that accelerates enterprise agent adoption at scale

Freemium model with enterprise pricing available

ArizeGalileoDataDogPatronus
Free tierEveryoneAPIOSSSelf-host
Multi-LLM (model-agnostic)10M+ users
Haystack logo

Haystack

Free

Agent frameworks

The open-source AI framework for production-ready agents, RAG & context engineering

Open source · Enterprise support available

OpenAIAnthropicMistralHugging Face+3
Free tierDevAPIOSSSelf-host
Agnostic (OpenAI, Anthropic, Mistral, Hugging Face, and more)Popular
Flowise logo

Flowise

Free

Agent frameworks

Open source visual platform for building AI agents and LLM-powered applications

Free · $35/mo Starter · $65/mo Pro

LangChainSlackNotionOpenTelemetry+1
Free tierEveryoneAPIOSSSelf-host
Agnostic (100+ LLMs supported)12kPopular
Pydantic AI logo

Pydantic AI

Free

Agent frameworks

GenAI Agent Framework, the Pydantic way — build production-grade AI apps with confidence

OpenAIAnthropicGoogleCohere+4
FreeDevAPIOSSSelf-host
Model-agnostic (OpenAI, Anthropic, Gemini, Mistral, Cohere, Groq, Ollama, and more)Growing
Agno logo

Agno

Free

Agent frameworks

Open-source agent framework and high-performance runtime for building multi-agent systems at scale

Free tier available · AgentOS for production deployment

LangGraphLangChainClaudeSlack+1
Free tierDevAPIOSSSelf-host
Multi-provider (30+ model providers)Growing
Workato logo

Workato

Free

Automation & agents

The trusted orchestration layer for AI agents, built on the #1 iPaaS

SalesforceSlackMarketoNetSuite+1
EnterpriseEveryoneAPI
Multiple (Claude, OpenAI, Microsoft Copilot)Popular
AutoGen logo

AutoGen

Free

Agent frameworks

Build multi-agent AI applications with conversable, customizable agents powered by LLMs

FreeDevAPIOSSSelf-host
OpenAI, Azure OpenAI, and others
OpenHands logo

OpenHands

Free

Agent frameworks

The Open Platform for Cloud Coding Agents

Free open-source local tier; Free SaaS Individual tier (BYOK or pay-as-you-go at-cost models); Enterprise at custom pricing (SaaS or self-hosted in VPC).

GitHubGitLabBitbucketSlack+6
Free tierEveryoneAPIOSSSelf-host
Model-agnostic (supports Claude Code, Codex, Gemini CLI, and others; BYOK supported)81k
Scale AI logo

Scale AI

Chat assistants

Reliable AI systems powered by the world's best data — from training to deployment.

MetaMayo ClinicBritish Petroleum
EnterpriseEveryoneAPI
Popular
Dify logo

Dify

Free

Agent frameworks

Build, deploy, and manage autonomous AI agents and RAG pipelines — effortlessly at any scale.

LLMsRAGMCP
Free tierEveryoneAPIOSSSelf-host
Multi-model (OpenAI, Anthropic, open-source, and more)Popular

Free Stack AI alternatives

Read the full Stack AI guideBrowse all agent frameworks tools