One API for every major LLM
HeFu aggregates OpenAI GPT Series, Claude Series, DeepSeek, Kimi (Moonshot AI), Google Gemini Series, Chinese LLM Matrix behind a single OpenAI-compatible API — for indie developers and enterprise teams alike.
Model lineup
Mix and match the right model for each scenario.
OpenAI GPT Series
Full GPT-5.6 lineup (Terra / Sol / Luna) plus the GPT-5.3 Codex coding model — Hong Kong nodes, no overseas credit card required.
Pay as you go
Claude Series
Claude Opus 5 / Fable 5 flagships and the cost-effective Sonnet 4.6 — a top pick for coding and long-form writing.
Pay as you go
DeepSeek
DeepSeek-V4-Pro / V4-Flash reasoning models at a fraction of GPT flagship cost, with an OpenAI-compatible API.
Pay as you go
Kimi (Moonshot AI)
Long-context leader Kimi K2.5 / K2.6 / K3 — the go-to choice for Chinese-language workloads.
Pay as you go
Google Gemini Series
Gemini 3.6 Flash / 3.5 / 3.1 Pro multimodal models — text, image, audio and video through one API.
Pay as you go
Chinese LLM Matrix
Qwen3.5-3.7, GLM-5.x, Doubao Seed 2.x, Tencent Hunyuan Hy3, Grok 4.3 and MiniMax M3 — all behind one endpoint.
Pay as you go
Up and running in three steps
From sign-up to your first API call in minutes.
Sign up & top up
One account unlocks every model series. Pay as you go, no subscriptions.
Get your API key
Create a key in the console and track usage and spend in real time.
Switch the baseURL
OpenAI-compatible endpoints — point your existing code at HeFu and go.
Frequently asked questions
Do I need an overseas credit card?
No. Top up with convenient local payment options and start calling major global models right away.
How does pay-as-you-go billing work?
You are billed only for actual API usage — no monthly subscription lock-in. Usage and spend are visible in the console in real time.
Is the API compatible with the OpenAI SDK?
Yes. In most cases you only need to change the baseURL and API key in your existing code; switching models is a single parameter change.
Can I use multiple models with one account?
Yes. A single account gives you access to every aggregated model series, so you can pick the best model per scenario without separate contracts.
From the blog
LLM API selection insights and integration practice. View all →
GPT-5.6 API Pricing: A Comprehensive Guide (As of Aug 2026)
GPT-5.6 API pricing: a practical guide from HeFu.
DeepSeek V4 vs GPT API Cost: Pricing Comparison for 2026
DeepSeek V4 vs GPT API cost: a practical guide from HeFu.
Claude Opus 5 API Access: Pricing, Setup, and Model Comparison (As of Aug 2026)
Claude Opus 5 API access: a practical guide from HeFu.