Best OpenAI compatible AI tools

Symphony is a universal LLM interface providing an OpenAI-compatible API for deploying, managing, and scaling AI applications. It offers enterprise-grade reliability, up to 20% lower costs, and supports over 100 major AI models like GPT-5 and Llama 4, making it an ideal solution for developers and enterprises seeking efficient and robust AI infrastructure.

SiliconFlow is a unified AI infrastructure platform designed for high-performance inference of Large Language Models (LLMs) and multimodal models. It provides developers and enterprises with scalable, cost-effective, and flexible deployment options, including serverless APIs, reserved GPUs, and fine-tuning capabilities, all accessible through a single, OpenAI-compatible API.

mancer is a high-performance Large Language Model (LLM) inference service providing API access to a diverse range of powerful and fine-tuned models. It's designed for developers, hobbyists, and businesses to integrate advanced AI capabilities into their applications without managing complex infrastructure.

An affordable, developer-focused transcription API powered by OpenAI's Whisper v3. It offers high-accuracy speech-to-text, speaker diarization, translation, and support for over 100 languages. Its OpenAI-compatible structure allows for seamless integration and scaling for millions of users.