Alternatives to Theta

Zhipu GLM delivers open-source LLM models, MaaS APIs, and autonomous agents for Chinese enterprises and developers.

Enterprise AI agent platform for document-heavy back-office workflows

OpenAI Agents SDK: Lightweight Python framework for building multi-agent workflows with handoffs, sandboxing, and voice.

Durable execution for background jobs, workflows, and AI agents — written in your own code

Mastra is an open-source TypeScript agent framework for building durable AI agents and workflows that run for days.

Self-hosted cloud dev environments with governed AI agent and LLM control for enterprises.

SAP's unified low-code and pro-code platform with Joule AI for enterprise app development

Agent evaluation and simulation platform that catches hallucinations before they reach production

Microsoft's open-source framework for building multi-agent AI workflows.

The integration layer for AI agents: managed auth + 10,000+ tools across 3,000+ APIs.

Hugging Face's barebones Python library for AI agents that act by writing code.

Microsoft's open-source SDK for building production-grade AI agents with plugins, memory, and orchestration.

Pydantic AI is the Python AI SDK for typed agents, realtime voice, image generation, and embeddings — every model a string swap away.

Open-source LLM that turns natural language into API calls for tool-using agents

Open-source multi-agent framework for role-based software engineering

Open-source dev platform uniting AI, NoCode, Code, and reusable MicroApps.

The frontend stack for agentic user experience — drop-in chat, generative UI, and shared state for React apps on any AG-UI backend

Imbue is an open AI lab building coding agent tools that run in parallel and answer to you, not a vendor.

Microsoft's framework for building production-grade agentic AI on Azure, with Python, C#, and Go SDKs and a GA Agent Harness runtime.

AI-powered all-in-one business OS with 50+ apps for sales and ops

Agent enablement platform for governing, testing, and optimizing AI agent skills across your dev team.

Agentic AI for the entire DevSecOps lifecycle in GitLab.

Open-source agentic AI data assistant for SQL, code, and reports

Flowith is an agentic canvas for multimodal AI creation with persistent context.

Microsoft's open-source, code-first agent framework for stateful, data-intensive conversational tasks.

Marketplace for ready-made AI agent skills you can run, publish, and monetize.

Open-source desktop AI agent with autonomous learning loop and deep memory

Open-source AI agent with smart routing that cuts token costs 60-80%.

Run any AI coding agent from anywhere — self-hosted, multi-provider, open source.

Open-source, self-hosted AI agent that plans tasks, runs tools, and evolves memory across 10+ channels.