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OpenAI Chat Completions API · Responses API · Responses API (WebSockets) · Embeddings API 34,697 requests

/openai
/openai/priority lower latency, 2x cost; gpt-5.5 is 2.5x

GPT-5.5 ProGPT-5.5GPT-5.4 ProGPT-5.4 MiniGPT-5.4 NanoGPT-5.4GPT-5.3GPT-5.2 ProGPT-5.2GPT-5.1GPT-5GPT-5 ProGPT-5 MiniGPT-5 Nano

o1 Proo1o3 Minio3 Proo3 Deep Researcho3o4 Mini Deep Researcho4 Mini

GPT-4.1 MiniGPT-4.1 NanoGPT-4.1

GPT-4o Audio PreviewGPT-4o Mini Audio PreviewGPT-4o Transcribe DiarizeGPT-4o TranscribeGPT-4o Mini TranscribeGPT-4o Mini TtsGPT-4o MiniGPT-4o

GPT Audio 1.5GPT Audio MiniGPT AudioTTS-1 HDTTS-1Whisper-1

GPT-4 TurboGPT-4GPT-3.5 Turbo

Text Embedding 3 SmallText Embedding 3 LargeText Embedding Ada 002

Google Gemini API 35,049 requests

Gemini API

/google
/google/api

Gemini 3.1 ProGemini 3.1 Flash LiteGemini 3 FlashGemini 3.1 Flash ImageGemini 3 Pro ImageGemini 3 ProGemini 2.5 ProGemini 2.5 Flash ImageGemini 2.5 Flash LiteGemini 2.5 FlashGemini 2.0 Flash LiteGemini 2.0 FlashGemini 2.5 Computer Use Preview 10 2025Gemini 3.1 Flash TtsGemini robotics Er 1.5Gemini robotics Er 1.6

Veo 3Veo 2.0

Imagen 4.0 FastImagen 4.0Imagen 4.0 Ultra

Vertex AI

/google/vertex
/google/vertex/priority lower latency, 2x cost, not all models supported

Gemini 3.1 ProGemini 3.1 Flash LiteGemini 3 FlashGemini 3.1 Flash ImageGemini 3 Pro ImageGemini 3 ProGemini 2.5 ProGemini 2.5 Flash ImageGemini 2.5 Flash LiteGemini 2.5 FlashGemini 2.0 Flash LiteGemini 2.0 FlashGemini 1.5 ProGemini 2.5 Computer Use Preview 10 2025Gemini 3.1 Flash TtsGemini live 2.5 Flash Native Audio

Veo 3Veo 2.0

Imagen 3.0Imagen 4.0 FastImagen 4.0Imagen 4.0 Ultra

gemma-4-26b-a4b-itgemma-4-31b-it