Open Source Together AI Alternatives
A curated collection of the 1 best open source alternatives to Together AI.
The best open source alternative to Together AI is LocalAI. If that doesn't suit you, we've compiled a ranked list of other open source Together AI alternatives to help you find a suitable replacement.
Together AI alternatives are mainly Machine Learning Infrastructure. Browse these if you want a narrower list of alternatives or looking for a specific functionality of Together AI.
A self-hosted AI engine that runs text, vision, voice, image and video models on any hardware, with no GPU required.

LocalAI runs models on hardware you already own and speaks the APIs your code already calls. Text, vision, voice, image and video all sit behind a single endpoint, and a GPU is optional rather than assumed, which removes the usual reason for sending private data to somebody else's server.
The design is a small core rather than a bundle. Each backend wraps an established engine such as llama.cpp, vLLM, whisper.cpp, stable-diffusion or MLX in its own image, pulled only when a model needs it, so you install nothing you do not use. LocalAI detects your GPU capability and fetches the matching backend on its own.
Several things follow from that structure.
- Drop-in API compatibility: the OpenAI, Anthropic and ElevenLabs APIs are served across every backend.
- Any hardware: NVIDIA, AMD, Intel, Apple Silicon, Vulkan and CPU-only each have their own container tag.
- Model sources: run one from the gallery, Hugging Face, the Ollama registry, a YAML config or any OCI registry.
- Multi-user ready: API key authentication, per-user quotas and role-based access come built in.
- Built-in agents: autonomous agents with tool use, RAG, MCP and skills ship with the engine.
- Terminal agent: a chat client reads your files and runs commands, asking approval before anything changes state.
macOS has a disk image download, unsigned by Apple, that needs a quarantine attribute cleared after install; everywhere else a single docker run starts the server.