All Claude models available now

One key.
Every model.

Access Opus 4.6, Sonnet, and Haiku through a single Anthropic-compatible endpoint. Swap your base URL — your code stays the same.

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The full Claude lineup

Every model, one endpoint. Use the model that fits your task.

Opus 4.6

claude-opus-4-6

Complex reasoning & analysis

Sonnet 4.6

claude-sonnet-4-6

Speed meets intelligence

Haiku 4.5

claude-haiku-4-5-20251001

Fastest for high throughput

Why OpusMax

Built for teams that need control

Multi-tenant API key management with per-key budgets, rate limits, usage tracking, and a full admin dashboard. Designed for resellers and teams.

Per-key budgets with 5h rolling windows
Isolated rate limits & expiry per key
Zero-latency SSE streaming pass-through
Prompt caching — cache tokens are free
Drop-in Anthropic SDK compatible
Works with Claude Code, Cursor, any IDE

Ready in 60 seconds

Three steps. That's it.

01

Get your API key

Your admin or reseller creates a key with budget and rate limits already configured.

02

Set your base URL

Point any Anthropic-compatible client to api.opusmax.pro. Everything else stays the same.

03

Start building

Claude Code, Python SDK, cURL, Cursor — it all just works. Streaming included.

Stop managing API keys manually

Set up OpusMax in under a minute. No credit card, no vendor lock-in — just swap your base URL and go.