yangmao.ai · Free API intent page

ChatGPT (OpenAI) Free API Guide

ChatGPT (OpenAI) does not have a confirmed free API in our tracker yet, with $0 and rate limit notes of N/A.

Open official provider → Get one OpenAI-compatible key → Compare API gateway options →

Quick verdict

Free API: Not confirmed in the current snapshot
Rate limits: N/A
Best model starting point: GPT-5.5
Mainland China access: proxy/relay likely needed

Provider fit matrix

Best fit Image generation prototypes, creative automation, and media workflows

Watch out Image/video credits can burn faster than chat tokens; test with small batches first

Production fallback Keep at least one compatible backup provider before shipping

Production readiness checklist

Quota gate No confirmed free API quota is recorded; verify ChatGPT (OpenAI) docs before collecting keys.

No-card check Try the free path first, then confirm whether billing is required for API keys, higher RPM, or production endpoints.

Regional smoke test Run signup, dashboard, DNS, TLS, and first API call checks from mainland China before launch.

Source freshness Snapshot date: 2026-05-21; official quota and pricing can change without notice.

Python setup snapshot

Start with the smallest possible chat completion, then move the key to your server-side secret manager before production.

from openai import OpenAI

client = OpenAI(api_key="your-openai-key")

# 使用最新 GPT-5.5
response = client.chat.completions.create(
    model="gpt-5.5",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(response.choices[0].message.content)

cURL smoke test

Use this to verify endpoint, auth header, model name, response shape, and quota before adding SDK abstractions.

curl https://api.provider.example/v1/chat/completions \
  -H "Authorization: Bearer $CHATGPT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "GPT-5.5",
    "messages": [{"role": "user", "content": "Hello from yangmao.ai"}]
  }'

Free API and pricing notes

API requires payment, no free tier. Codex (cloud coding agent) now available for enterprises.

Access and production risk

Relay or proxy may be needed

Requires proxy in China. Recommend API relay services or self-hosted Cloudflare Workers proxy.

Decision checklist

Check ChatGPT (OpenAI) free credits and rate limits.

Compare same-category providers and Mainland China access needs.

Pick the provider with the clearest no-card/free API path for testing.

额度变动提醒

想知道免费额度、价格或可用性变化？先订阅提醒，后续也可以对比官方平台、API 网关和同类替代方案。

订阅提醒 → 获取 OpenLLMAPI Key → 比较 API 网关 →

Source snapshot

Data source: yangmao.ai provider YAML tracker plus provider docs reviewed by the daily crawler. Official dashboards can change quota and pricing without notice; verify before production.

yangmao.ai provider id: chatgpt
Official source: https://chat.openai.com
Last updated: 2026-05-21
Free tier: Limited requests/day
API credits: $0
Rate limit: N/A
Access note: Requires proxy in China. Recommend API relay services or self-hosted Cloudflare Workers proxy.

FAQ

Does ChatGPT (OpenAI) have a free API?

No confirmed free API is recorded in the current yangmao.ai snapshot; use the official docs as source of truth before signing up.

Is ChatGPT (OpenAI) OpenAI-compatible?

The recorded setup uses an OpenAI-compatible pattern or SDK-style call. Validate the latest base URL and model names in ChatGPT (OpenAI) docs.

Can I use ChatGPT (OpenAI) from mainland China?

ChatGPT (OpenAI) may need a proxy or relay from mainland China. Test latency and signup before production.

What should I do when ChatGPT (OpenAI) credits run out?

Compare the alternatives below, check /en/free-ai-api/, and shortlist official providers or API gateway options before production.