ChatGPT and Claude API Without a US Card: A 2026 Guide

Q: Are the models on HeFu the same as the official versions?

The catalog on [https://www.hefu.hk/models](https://www.hefu.hk/models) lists the GPT-5.6 full series (Terra / Sol / Luna), GPT-5.5 / 5.4 / 5.2, Claude Opus 5 / Fable 5, Claude Sonnet 5 / Sonnet 4.6, DeepSeek-V4-Pro / V4-Flash, Kimi K2.5 / K2.6 / K3, Gemini 3.6 Flash, Qwen 3.8 Max, GLM 5, Doubao Seed 2.x, Grok 4.3, and MiniMax M2.1–M3. All are served through the same base URL at `https://api.hefu.hk/v1`. Model availability can change, so always confirm against the official models page before production.

How to Access ChatGPT and Claude API Without a US Card (2026 Guide)

Core Conclusion: Bypass the US Card Barrier with HeFu's Global Gateway

As of September 2026, developers outside the United States can fully access ChatGPT and Claude API capabilities without a US-issued credit card by routing through HeFu's unified gateway at https://api.hefu.hk/v1. HeFu acts as a neutral billing intermediary that aggregates the OpenAI GPT-5.6 series alongside Claude Opus 5 / Fable 5 and Sonnet 5 models, supports locally available payment methods, and lets you migrate from a US-card-restricted setup in under five minutes with zero code rewrites. The live model catalog is at https://www.hefu.hk/models (as of Sep 2026); treat that page as authoritative because names and availability can change.

The US Card Bottleneck: Why It Excludes Two-Thirds of the World

Major AI providers still enforce US billing addresses through Stripe's risk engine. Stripe's Radar documentation explicitly includes card BIN and issuer-country metadata in payment risk scoring (Stripe docs, accessed Sep 2026), and cards issued outside supported regions are frequently declined. The practical scale is large: GitHub reported more than 100 million developers on its platform as of February 2023 (historical data; GitHub), and the World Bank's Global Findex put the number of unbanked adults worldwide at 1.4 billion in 2021 (worldbank.org). No public dataset isolates how many developers are blocked by this billing wall.

The typical workaround adds friction. Virtual card providers targeting non-US residents can issue US-BIN cards after identity verification, but fees, top-up spreads, and acceptance rates vary widely by issuer. Virtual cards are an extra layer: they carry per-transaction charges, require trusting the card issuer, and can be shut down without warning.

Free tiers are not a reliable alternative for production work. Free tiers on the major chat products carry tight rate limits and model downgrades during peak hours, which makes them unsuitable for anything beyond casual evaluation. Anthropic's standard paid subscription is $20/month as of February 2026 (official pricing page); Anthropic's model documentation lists 200K-token context for standard Claude models, with 1M-token context available principally through API/enterprise access where offered (Anthropic docs). For serious applications, neither a free tier nor a single subscription is enough — which is why an aggregator gateway is the practical route.

HeFu's Solution: Flexible Payments and Seamless Migration

HeFu removes the US card requirement at the billing layer. Instead of subscribing to each provider individually, you create one account, top up with your local payment method, and call a single OpenAI-compatible endpoint. The migration path is deliberately simple:

Keep your existing OpenAI SDK code; change only the base_url to https://api.hefu.hk/v1 and swap the API key.
One account covers ChatGPT-class models (GPT-5.6 Terra / Sol / Luna, GPT-5.5 / 5.4 / 5.2, GPT-5 Pro / Mini / Nano and the GPT-5.x Codex programming series) and Claude-class models (Claude Opus 5 / Fable 5, Claude Sonnet 5 / Sonnet 4.6, and Opus 4.8 / 4.7 / 4.6).
The same key also unlocks DeepSeek (DeepSeek-V4-Pro / V4-Flash, R1 / V3 / V3.1 / V3.2), Kimi K2.5 / K2.6 / K3, Gemini 3.6 Flash, Qwen 3.8 Max, GLM 5, Doubao Seed 2.x, Grok 4.3, and MiniMax M2.1–M3 — all through the Hong Kong node.

Exact pricing and plan details are subject to adjustment, so confirm current rates on the official pricing page: https://www.hefu.hk/pricing (as of Sep 2026). For a deeper look at token economics, see our GPT-5.6 API pricing breakdown.

Comparison: Direct API vs. HeFu Aggregated API

Criterion	Direct ChatGPT / Claude API	HeFu Aggregated API (as of Sep 2026)
Payment method	US card or US-BIN virtual card required (Stripe BIN/country checks per Stripe docs)	Local payment methods; no US card needed; top-up via pricing page
Regional availability	US billing address enforced by Stripe BIN checks	Global access via Hong Kong node
Model access	Single vendor (OpenAI or Anthropic only)	GPT-5.6 series, Claude Opus 5 / Sonnet 5, DeepSeek V4, Kimi K3, Gemini 3.6 Flash, Qwen 3.8 Max, GLM 5, and more — see models page
Integration effort	Separate accounts, SDKs, and billing per vendor	One OpenAI-compatible base URL and one key
Rate limits / ads	Free tiers carry tight quotas and model downgrades at peak hours	Pay-as-you-go, no ads; per-model limits listed on the models page
Billing control	Multiple invoices, FX fees, card declines	Unified dashboard and single invoice

The complete in-sale model catalog is available at https://www.hefu.hk/models.

Getting Started: Sign-Up, Integration, and First API Call

You can move from a blocked direct signup to a working integration in about five minutes:

Create an account at https://www.hefu.hk — new accounts start with a $1 bonus credit.
Generate an API key from the dashboard.
Point your existing client to https://api.hefu.hk/v1.

Minimal Python example:

from openai import OpenAI

client = OpenAI(base_url="https://api.hefu.hk/v1", api_key="YOUR_HEFU_KEY")
resp = client.chat.completions.create(
    model="claude-opus-5",  # or "gpt-5.6-terra"
    messages=[{"role": "user", "content": "Explain the setup in one sentence."}],
)
print(resp.choices[0].message.content)

The full API reference lives at https://www.hefu.hk/docs. For Claude-specific context and Opus 5 configuration notes, read our Claude Opus 5 API Access: Pricing, Setup, and Model Comparison. Developers in nearby regions can also follow the Claude API for Southeast Asia Developers guide for regional best practices.

Building Production-Ready Apps Using HeFu's Toolkit

Beyond raw chat completions, HeFu ships ready-to-deploy tools so you can focus on product logic rather than payment logistics:

Dev Toolkit — prompt templates, code generation, and model routing for engineering teams.
Support Widget — embed a customer-service widget powered by Claude or GPT in minutes, with billing handled by HeFu.
Marketing Studio, Seller Assistant, HR Assistant, and Creative Studio cover content, e-commerce listings, recruiting, and visual workflows respectively.

Each tool connects to the same API key, so you never have to open a separate vendor account or pass a Stripe BIN check.

FAQ

Can I pay for Anthropic's official Claude API without a US bank card?

Not directly, in most cases. Anthropic's billing runs through Stripe, which factors card BIN and issuer country into its risk checks (Stripe Radar docs), so cards issued outside supported regions are frequently declined. Your practical options are a US-BIN virtual card from a specialist provider, or an aggregator such as HeFu that handles the billing intermediary layer for you.

What are the limits of card-free services like OpenRouter compared with official APIs?

OpenRouter's free tier covers more than 30 models and requires no credit card to create an API key, but it applies daily request quotas, and some models expose different context windows from the official API (source: ai.plainenglish.io, 2026). Privacy and SLA terms are set by OpenRouter's platform policies (OpenRouter docs). HeFu instead provides pay-as-you-go access to the same GPT-5.6 and Claude Opus 5 / Sonnet 5 model families through a standard OpenAI-compatible protocol, with current limits and availability shown on https://www.hefu.hk/models.

Are the models on HeFu the same as the official versions?

The catalog on https://www.hefu.hk/models lists the GPT-5.6 full series (Terra / Sol / Luna), GPT-5.5 / 5.4 / 5.2, Claude Opus 5 / Fable 5, Claude Sonnet 5 / Sonnet 4.6, DeepSeek-V4-Pro / V4-Flash, Kimi K2.5 / K2.6 / K3, Gemini 3.6 Flash, Qwen 3.8 Max, GLM 5, Doubao Seed 2.x, Grok 4.3, and MiniMax M2.1–M3. All are served through the same base URL at https://api.hefu.hk/v1. Model availability can change, so always confirm against the official models page before production.

Is there a free tier on HeFu?

As of Sep 2026, new HeFu accounts receive a $1 starter bonus credit — enough to evaluate the models and your integration end to end; ongoing usage is pay-as-you-go with no subscription lock-in. Current rates are published on https://www.hefu.hk/pricing. Third-party free tiers such as OpenRouter do exist but carry daily rate limits that are impractical for production traffic.

Is it safe to use a third-party API gateway instead of a virtual card?

Safety depends on the platform's data-handling policy. HeFu routes requests through a Hong Kong node and supports the official OpenAI-compatible protocol; review the data and security notes in https://www.hefu.hk/docs. A virtual card isolates your spend but still requires trusting the card issuer and adds currency conversion friction. For most teams, an aggregator with a single billing relationship is simpler to audit and operate.