A Messages-compatible endpoint you can buy online today
Keep the Anthropic Messages format your code already uses, but switch the base URL to a gateway you can top up online. Run Claude when you need it, or route the same key to lower-cost models.
How this compares to the first-party Anthropic API
If you need Anthropic's enterprise contract and SLA, use Anthropic directly. If you want Messages compatibility with instant self-serve access, here is the trade.
| This gateway | Anthropic API (direct) | |
|---|---|---|
| Request format | Anthropic Messages compatible — same SDK shape | Anthropic Messages (first-party) |
| Onboarding | Buy online, key delivered by email instantly | Account approval and billing setup |
| Billing | Prepaid CNY credits, no expiry | Usage billed in USD |
| Model choice on one key | Claude plus GPT, Gemini, Kimi, GLM, DeepSeek and more | Claude family only |
| Claude Code | Set ANTHROPIC_BASE_URL, default claude-sonnet-4-6 | Native |
| Enterprise SLA | No formal SLA today | Enterprise agreements available |
Who this is for
A good fit if you
- Already write to the Anthropic Messages format and want to keep it
- Want to start in minutes without an approval or procurement cycle
- Want the option to route the same key to cheaper models when Claude is overkill
- Prefer prepaid credits over a metered USD invoice
Not the right fit if you
- Need a first-party Anthropic enterprise contract and SLA
- Require data-processing terms signed directly with Anthropic
- Need USD invoicing for procurement
- Depend on a brand-new Claude model the day it ships
Honest limitations
The trade-offs of a compatible endpoint versus first-party access.
- This is a compatible gateway, not Anthropic. There is no first-party SLA or signed DPA with Anthropic.
- Billing and prepaid credits are in CNY; there is no USD invoicing surface.
- Newly released Claude models may not be routable on day one — check the pricing page for the current list.
- We do not publish latency or uptime numbers we have not measured. Validate your own workload first.
The numbers, from our own pricing
Live published rates for the Claude family and the compatibility surface. Multipliers apply to a 0.4 CNY per 1M token base.
Latency and availability depend on your region and the upstream model. We do not publish SLA numbers we have not measured — test before you migrate production traffic.
Anthropic API alternative — FAQ
Will my existing Anthropic SDK code work?
If you use the Messages format, switch the base URL to the gateway and keep your request shape. Most apps need only an environment-variable change.
Is this the same as the official Anthropic API?
No. It is a Messages-compatible gateway. Use it for instant self-serve access and multi-model routing; use Anthropic directly if you need a first-party enterprise contract.
Can I run Claude Code against it?
Yes. Set ANTHROPIC_BASE_URL to the gateway and ANTHROPIC_MODEL to claude-sonnet-4-6 (or any supported model). Claude Code appends the Messages path automatically.
How do I pay?
Buy online and the key is delivered by email instantly. Credits are prepaid in CNY and never expire.
Keep the format, change the base URL
Buy a Messages-compatible key and start in minutes.