OpenRouter / Create embeddings

Turns text into an embedding vector with one of 30 embedding models on OpenRouter (OpenAI text-embedding-3, Google gemini-embedding, Voyage 4, Mistral, Qwen3, BGE, E5 and more). One text per call, up to 50,000 characters; some small models take only 512 tokens and refuse longer text at no charge. Returns data[0].embedding (floats, or base64 with encoding_format) and usage with the exact cost. Charged at OpenRouter's reported cost plus its 5.5% credit fee.