OpenAI API

Buy OpenAI GPT API access at a fraction of official pricing. Drop-in OpenAI-compatible, pay only for what you use.

Get an OpenAI GPT API key without a US card or organization verification. APIMaster gives you the latest GPT models at a fraction of OpenAI's list price, billed per token. One key also covers Claude and DeepSeek and is fully OpenAI-compatible — drop it into Cursor, Codex or any OpenAI SDK by changing the base URL.

Seleccionar modelo

gpt-5.4

Channel 50

IN$0.0862/M$2.5/MAhorra 97%

OUT$0.5174/M$15/MAhorra 97%

Historial de huellas

Estado de servicio

gpt-5.4

Channel 25

IN$0.1431/M$2.5/MAhorra 94%

OUT$0.8587/M$15/MAhorra 94%

Historial de huellas

Sin datos de detección

Estado de servicio

gpt-5.4

Channel 52

IN$0.1772/M$2.5/MAhorra 93%

OUT$1.0632/M$15/MAhorra 93%

Historial de huellas

Sin datos de detección

Estado de servicio

gpt-5.4

Channel 12

IN$0.1908/M$2.5/MAhorra 92%

OUT$1.1449/M$15/MAhorra 92%

Historial de huellas

Sin datos de detección

Estado de servicio

gpt-5.4

Channel 46

IN$0.2578/M$2.5/MAhorra 90%

OUT$1.5466/M$15/MAhorra 90%

Historial de huellas

Sin datos de detección

Estado de servicio

gpt-5.4

Channel 16

IN$0.2936/M$2.5/MAhorra 88%

OUT$1.7614/M$15/MAhorra 88%

Historial de huellas

Sin datos de detección

Estado de servicio

gpt-5.4

Channel 03

IN$2.5/M

OUT$15/M

Historial de huellas

Sin datos de detección

Estado de servicio

Every GPT channel is fingerprint-checked before it's listed, so you get the real model — not a cheaper stand-in.

OpenAI API — Pricing

Model	Our price	Official	Save
GPT 5.4	$0.0862/M	$2.5/M	97%
GPT 5.5	$0.2862/M	$5/M	94%

Capabilities

Multimodal

Text, vision, code and data analysis across one model family.

Reliable reasoning

Strong general reasoning and instruction-following for production workloads.

Tools & function calling

First-class function calling and structured output for agents and pipelines.

Use cases

Chatbots & assistantsCode generation & reviewVision & document understandingData extraction & analysisFunction-calling agents

Quick start

curl https://apimaster.ai/v1/chat/completions \
  -H "Authorization: Bearer $APIMASTER_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-5.4",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'

OpenAI API — Preguntas Frecuentes

Which GPT models are available?

Currently available: gpt-5.4, gpt-5.5 — the latest GPT family with multimodal vision, code generation and data analysis, all through one key.

How is it billed? Is there a minimum?

Billed per token (input + output) — see the price table above. Pay-as-you-go via Alipay, WeChat Pay, USDT and credit card, from $1.

Is it OpenAI-compatible? Does it work with Cursor and Codex?

Yes — it is the OpenAI API, so Cursor, Codex and any OpenAI SDK work out of the box; just point the base URL and key at APIMaster.

Is my data safe?

Yes. Your API data is not stored or used for training, and all requests are sent over encrypted connections.

Why is it cheaper than OpenAI?

We aggregate volume across channels and bill per token with no minimums, so the effective price lands well below OpenAI's list price.

Other models

Claude API DeepSeek API MiniMax API Kimi API Qwen API Sora API GPT Image API

Cómo Empezar

Crea tu Clave de API

Regístrate y crea una clave de API compatible con OpenAI en 3 segundos. No se requiere tarjeta de crédito.

Crear Clave de API

Recarga tu Saldo

Añade créditos mediante USDT o Epay. Un solo saldo funciona en todos los modelos y proveedores.

Recargar Ahora

Conéctalo a tu Código o Agente

Intercambia tu clave de APIMaster y base URL — funciona con cualquier herramienta compatible con OpenAI: Claude Code, Cursor, LangChain, LiteLLM y más.

Ver Documentación