Premium only. Opus first.
Why OpusVIP exists
This Opus lane was built for production projects that run on Claude Opus every day, so it has to be fast, stable and accountable for every charge. OpusVIP opens that lane to developers as it is: the same resource pool and the same routing.
That is why OpusVIP focuses on one thing: making Claude Opus in Claude Code a premium, production-grade experience, with clear prices, billing and logs. Fable 5.1, Sonnet 5.5 and Haiku 5.5 run on the same lane, one /model away.
Principles
Tuned for Opus
Premium only and tuned for Opus. Opus 5.5 is the flagship workhorse, with Fable 5.1, Sonnet 5.5 and Haiku 5.5 as strong partners in Claude Code.
List prices, converted
Every model is billed at 1x: usage is priced at Anthropic's list prices and converted to credits (1 credit = $0.01 at list price). 100 credits cost you $0.15, which is 15% of list price. Cache reads and writes are billed at Anthropic's cache rates.
Every charge traceable
The console logs the model, each token type and the amount charged for every request, so you can recompute any charge yourself.
Failed requests are free
Upstream errors and requests that don't complete are never charged.
Built for Claude Code
One client, done properly: the official Claude Code CLI, rather than compatibility with everything.
OpusVIP at a glance
| What it is | OpusVIP is a premium Claude Opus API relay built for Claude Code. It is independently operated and not affiliated with Anthropic. |
|---|---|
| Models | Claude Opus 5.5 (flagship, default), Fable 5.1, Sonnet 5.5 and Haiku 5.5. All have a 1M context window and up to 128K output tokens. |
| Price | Usage is priced at Anthropic's list prices and converted to credits (1 credit = $0.01 at list price). 100 credits cost $0.15, so you pay 15% of list price. |
| Caching and failures | Cache writes and reads are billed at Anthropic's cache rates. Upstream errors and requests that don't complete are never charged. |
| Setup | ANTHROPIC_BASE_URL=https://api.opusvip.dev, and ANTHROPIC_AUTH_TOKEN set to the sk- key you create in the console. |
| Clients | The official Claude Code CLI, including the Claude Code extensions for VS Code and JetBrains. |
| Payment | Stripe: card, Alipay or WeChat Pay. Pay as you go, no monthly fee, $1.50 minimum top-up. |
| Console and contact | console.opusvip.dev · hello@opusvip.dev |
Last updated:
Trademarks
OpusVIP is an independent third-party service and is not affiliated with, endorsed by or partnered with Anthropic, PBC. Claude and Opus are trademarks of Anthropic.
Contact
For questions, partnerships or fault reports, email hello@opusvip.dev. Include the request time and the details from your console log so the issue can be tracked down faster.