Claude Opus 4
Frontier
For complex reasoning, agent workflows, and large coding tasks.
One gateway for
Claude and Codex.
Grape Hub is a drop-in AI API gateway with one stable base URL, one customer key, built-in load balancing, per-key metering, invite-code billing, and 24/7 monitoring.
Supported models
Unified access to Claude and Codex
Use one stable entry point for different AI workloads. Claude traffic follows the Anthropic-compatible protocol, while Codex and OpenAI-compatible requests can be routed through the matching upstream keys.
Claude Sonnet 4
Balanced
The everyday workhorse for strong quality, throughput, and cost control.
Claude Haiku
Fast
Low-latency responses for high-frequency and real-time workloads.
Codex / OpenAI Compatible
Compatible
Codex and OpenAI-compatible paths can reuse the same Grape key layer.
Why Grape Hub
Access, key issuing, metering, and monitoring in one place
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Drop-in compatible
Point ANTHROPIC_BASE_URL at Grape Hub and keep your existing Anthropic SDK, Claude Code, or automation tools.
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One endpoint, one key
Teams, devices, and applications connect through one Grape key while the gateway maps requests to the right upstream key.
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Load balanced
Requests are distributed across relay nodes, with room to scale horizontally as business volume grows.
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Operational stability
Health checks, fallback behavior, and service monitoring reduce the impact of upstream instability.
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Usage metering
Track usage by Grape key, upstream key, and invite code, with both company-level totals and per-device detail.
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Secure management
Key authentication, hidden admin paths, audit logs, and optional IP restrictions support customer-level issuing, rotation, and revocation.
Quickstart
Switch over with a few environment variables
Already using the Anthropic SDK or Claude Code? Set the base URL and your Grape key, then call Claude as usual.
# Overseas entry export ANTHROPIC_BASE_URL="https://sg.grapunion.com" export ANTHROPIC_AUTH_TOKEN="sk-gp-your-key" # Then call Claude the same way you do today. curl "$ANTHROPIC_BASE_URL/v1/messages" \ -H "x-api-key: $ANTHROPIC_AUTH_TOKEN" \ -H "anthropic-version: 2023-06-01" \ -d '{"model":"claude-sonnet-4","max_tokens":256,"messages":[{"role":"user","content":"Hello"}]}'
For Windows users, onboarding can include an automatic configuration utility for Claude Code and Codex.
Billing
Usage-based billing with customer invite codes
Each customer can receive an invite code and distribute it across multiple devices. Every device receives its own key, while billing can be viewed by invite code, company, upstream key, or individual Grape key.
Need access?
Tell us your workload, preferred models, region requirements, and expected volume. We will configure the invite code, keys, and monitoring entry for you.
Talk to us
Get started with Grape Hub
For onboarding, migration, custom regions, invite codes, and usage monitoring, contact us directly.
You can also send your preferred contact channel and we will follow up.