Alternatives to Sublayer

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

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

Vercel AI SDK is an open-source TypeScript toolkit for building AI apps with 100+ models, real-time streaming, fallbacks, and agents

Open-source Python & TypeScript SDK for building production-grade AI agents with hooks, model routing, and cost controls.

EffGen is a Python framework for building AI agents on small language models, run locally or through any OpenAI-compatible server.

An open-source Python framework that turns ordinary functions into AI-powered tools via simple decorators.

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

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

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

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

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

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

Google's open-source framework for building agentic AI apps in JS, Go, Python & Dart.

Open-source Python framework turning messy text into typed, queryable Semantic DataFrames

Open-source MCP testing & app framework for building ChatGPT Apps and Claude Connectors.

Open-source React toolkit for generative UI — let LLM agents render your own components

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

Guidance is an open-source Python library for constrained LLM generation with regex, CFG, and native control flow.

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

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.

Open-source AI agent that learns from you and automates tasks across 20+ chat platforms

Self-hosted open-source SuperAgent for deep research, coding, and creation.

Open-source streaming-first toolkit that turns AI agent output into interactive UI, not JSON.

Compress AI agent context by up to 90% with a local, open-source MCP server.

Open Harness is an open-source TypeScript SDK for building Claude Code-style agent harnesses with stateless primitives and composable middleware.

Open-source Swift package wrapping the OpenAI API with async/await and Combine.

Open-source Java library for building LLM-powered apps with a unified API