OpenAI API vs Together AI
Side-by-side comparison of OpenAI API and Together AI: pricing, features, API access, and community ratings.
Together AI specializes in ultra-fast inference for open-source models with cutting-edge optimization (31%+ faster than competitors), making it ideal if you need high-performance hosting for models like Llama or Mixtral at lower costs. OpenAI API gives you access to proprietary frontier models (GPT-4o) with more mature tooling like Assistants API and the broadest ecosystem support, but locks you into OpenAI's models only. Choose Together AI for speed, cost efficiency, and open model flexibility; choose OpenAI for the most capable proprietary models and established developer infrastructure.
OpenAI API The most widely used AI API — access GPT-4o, DALL·E, Whisper, and Embeddings from OpenAI. | ||
|---|---|---|
| Category | AI infrastructure | AI infrastructure |
| Pricing | Freemium | Freemium |
| Starting price | ||
| Free tier | ||
| Audience | Technical | Technical |
| API available | ||
| Open source | ||
| Self-hostable | ||
| Model provider | OpenAI | Open-source models (e.g., DeepSeek, Gemma, Llama, Qwen, GLM, MiniMax, Kimi) |
| Founded | 2023 | 2022 |
| Headquarters | San Francisco, US | San Francisco, USA |
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