Kterna (api.kterna.xyz) is an OpenAI-compatible LLM API relay aggregating multiple providers including OpenAI, Anthropic Claude, Google Gemini, MoonshotAI, DeepSeek, Qwen, Grok, Zhipu, Volcengine, MiniMax, Hunyuan, Midjourney and Suno. Offers chat completions, embeddings, rerank, image and audio endpoints with no subscription required.