ModelRefs / Together AI — AI Glossary
Together AI — AI Glossary
A cloud inference and fine-tuning platform specializing in open-weight models with OpenAI-compatible APIs and fast GPU clusters.
Overview
Together AI provides managed inference for 100+ open models (LLaMA, Mistral, Qwen, Flux) with OpenAI-compatible endpoints, dedicated fine-tuning with LoRA/QLoRA, and GPU cluster rental. Positioned as the open-model alternative to OpenAI API, with aggressive pricing and fast inference via FlashAttention-optimized kernels.
Reference details
| Topic | infrastructure |
|---|---|
| Last reviewed | 2026-06-24 |
Related terms
Commonly confused with
One of several hosts serving open-weight models behind an OpenAI-shaped API, alongside Fireworks, Replicate and Groq. They differ less in the models offered than in what they optimise: dedicated capacity and fine-tuning here, versus latency-specialised hardware or per-container flexibility elsewhere. Since the API shape is shared, the switching cost is low and the evaluation should be on latency, price and model availability for your specific model.
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Frequently asked questions
What is Together AI?
A cloud inference and fine-tuning platform specializing in open-weight models with OpenAI-compatible APIs and fast GPU clusters.
What concepts are related to Together AI?
Closely related concepts include groq, fireworks ai, openai compatible.