AI Gateway Directory

Home / Frontier labs

OpenAI API

GPT and reasoning models behind one developer API

OpenAI's developer platform. It serves the GPT family of text and reasoning models, plus image, speech and embeddings endpoints. Billing is per token, with a Responses API for building agents.

gptllm-apireasoningembeddings

vs Anthropic API vs Google Gemini API vs Llama vs Ollama vs OpenRouter vs Alibaba Cloud Model Studio OpenAI API alternatives

More in Frontier labs

Anthropic API

Claude models through the Anthropic developer platform

Paidclaudellm-api

Google Gemini API

Gemini models via Google AI Studio and the Gemini API

Freemiumgeminimultimodal

Alibaba Cloud Model Studio

Qwen models and a model service on Alibaba Cloud

Paidqwenalibaba

Amazon Nova

Amazon's own foundation models on Bedrock

Paidamazonbedrock

Cohere

Enterprise language models for search and agents

Freemiumcohereenterprise

DeepSeek API

Low-cost reasoning and chat models, OpenAI-compatible

Paiddeepseekreasoning