Welcome

Claude Opus 4.5 via Google Vertex - Max 20x limits at 1/4th the price

Extend Proxy

Access Claude Opus 4.5 and Sonnet through Google Vertex Model Garden. Get usage limits similar to Claude Max 20x ($200/mo) at a fraction of the cost.

Pricing: $50/month or$15/week — flat rate, no per-token billing.

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What You Get

Feature	Details
Models	Claude Opus 4.5, Sonnet 4.5 with extended thinking
Usage Limits	Similar to Claude Max 20x (~$200/mo plan)
API Key	Dedicated key per user (not shared access)
Compatibility	Claude Code, Cursor, Cline, Roo Code, Continue, Aider, OpenCode
OpenAI Endpoint	Available with some limitations
Onboarding	Dedicated setup help until service scales

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How It Works

1. You subscribe → Get your API key + endpoint URL
2. Configure your tool → Follow the setup guide for your editor/CLI
3. Start coding → Claude routes through Google Vertex AI

Your requests go through our proxy to Google Vertex Model Garden. Same Claude models, different backend.

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Known Limitations

Read these before subscribing. This service has trade-offs.

Limitation	Details
Cold Start Delay	First request after idle may take 10-20 seconds
Web Search	Needs workaround — Google grounding protocol differs from Anthropic
529 Errors	Occasional quota errors — auto-retry usually fixes it
CLI Only	No web UI included. Docs cover CLI tools only. You can set up your own UI
Latency	Higher for users far from server (e.g., South America ~20s)
Image Support	Some tools (OpenCode) need extra config for images

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Supported Tools

Claude Code

Anthropic’s official CLI

Cursor

AI code editor

Cline

VS Code extension

Roo Code

VS Code extension

Continue

VS Code / JetBrains

Aider

Terminal pair programmer

OpenCode

Open-source CLI

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Available Models

Model	Best For
claude-opus-4-5-thinking	Complex tasks, architecture, planning
claude-sonnet-4-5-thinking	Daily coding, quick iterations
claude-sonnet-4-5	Standard mode (no extended thinking)
gemini-3-flash	Very fast, simple tasks, low quota usage

See Available Models for full details.

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Pricing Comparison

Plan	Price	Limits
Claude Pro	$20/mo	Hits limits fast
Claude Max	$100/mo	5x Pro limits
Claude Max 20x	$200/mo	20x Pro limits
Extend Proxy	$50/mo	~Max 20x level

Also available: $15/week if you want to try commitment-free.

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Trial

48-hour trial available — test before paying.

DM on Discord: presumptiousbastard

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Quick Start

Get Started

Setup in under 5 minutes