OpenAI Responses
PaidLiveLast verified 24 Sept 2026
OpenAI's model endpoint for text and image input, tool calling and multi-turn state, billed per token.
Example request
curl -s https://api.openai.com/v1/models -H "Authorization: Bearer $API_KEY"
Free tier, in plain English
No free tier is listed; you pay per million input and output tokens, with cheaper batch and flex modes.
Alternatives in LLMs
AI For ThaiThai-language NLP, vision, and speech AI services from Thailand's national tech research center.AI/ML APISingle API and key that proxies 1,000+ third-party LLM, image and speech models, OpenAI-SDK compatible.PaidAnthropic MessagesClaude models for chat, tool calling, image and PDF input and structured output, with streamed replies.PaidCohereChat, embeddings and rerank models for building search, RAG and conversational AI features.FreemiumCustomGPT.aiBuild a custom RAG chatbot trained on your own documents or site, queried over REST.Free trial