Alpha APIsAlpha APIs
UNIFIED AI INFRASTRUCTURE

Build across
every frontier.

A production gateway for leading AI model families. Integrate Claude, Codex, GPT, Grok and Gemini workflows through familiar Anthropic- and OpenAI-compatible interfaces.

Read the API docs →Inspect API key
All systems operationalOpenAI compatibleAnthropic compatible
Alpha APIsUNIFIED GATEWAYAlpha APIsHTTPS · JSON · STREAMING
AIClaudeAnthropic
✦ChatGPTOpenAI
</>CodexCode agents
𝕏GrokxAI
✧GeminiGoogle
POST/v1/responses200
01

Before you start

Your delivered key begins with sk-. Treat it like a password: keep it in an environment variable, never commit it to GitHub, and never put it in browser-side JavaScript.

CLAUDE BASE URLhttps://api.nghimmo.comNo /v1, except clients that explicitly require it.
CODEX & GROKhttps://api.nghimmo.com/v1Always include /v1.
AUTHENTICATIONBearer sk-your-keyUse the private key delivered with your order.
Key families are isolated. A Claude key cannot call Codex or Grok models, and Codex/Grok keys do not work in Claude Code. Verify validity and remaining quota at Alpha APIs Key Check.
02

Choose your API family

Open one family below. Every nested setup is independently expandable, making the guide practical on mobile.

Claude / AnthropicOpus, Sonnet, Haiku and automatic routingExpand
BASE URLhttps://api.nghimmo.com
RECOMMENDEDnghi/claude-sonnet-5

Available Claude models

Opus · strongest for hard tasks
nghi/claude-opus-5 nghi/claude-opus-5-thinking nghi/claude-opus-4.8 nghi/claude-opus-4.8-thinking nghi/claude-opus-4.7 nghi/claude-opus-4.7-thinking nghi/claude-opus-4.6 nghi/claude-opus-4.6-thinking nghi/claude-opus-4.5 nghi/claude-opus-4.5-thinking
Sonnet · balanced daily model
nghi/claude-sonnet-5 nghi/claude-sonnet-4.6 nghi/claude-sonnet-4.6-thinking nghi/claude-sonnet-4.5 nghi/claude-sonnet-4.5-thinking nghi/claude-sonnet-4 nghi/claude-sonnet-4-thinking
Haiku and Auto · fast or automatic
nghi/claude-haiku-4.5 nghi/claude-haiku-4.5-thinking nghi/auto

Setup by application

Claude Code CLI
  1. Install Node.js, then run npm install -g @anthropic-ai/claude-code.
  2. Create or edit ~/.claude/settings.json.
  3. Restart the terminal and launch claude.
{ "env": { "ANTHROPIC_BASE_URL": "https://api.nghimmo.com", "ANTHROPIC_AUTH_TOKEN": "sk-your-alpha-key", "ANTHROPIC_MODEL": "nghi/claude-sonnet-5", "ANTHROPIC_DEFAULT_OPUS_MODEL": "nghi/claude-opus-5", "ANTHROPIC_SMALL_FAST_MODEL": "nghi/claude-haiku-4.5" } }
Claude Desktop
  1. Install Claude Desktop from claude.com/download.
  2. Configure the gateway with the Claude base URL and your delivered key.
  3. Fully quit and reopen the app, then continue through the configured gateway.

When changing keys, replace the old key and restart the application.

VS Code / Cursor / Antigravity
  1. Install the official Claude Code extension.
  2. Set the Claude base URL to https://api.nghimmo.com.
  3. Set the authentication token and preferred Claude model.
  4. Run Reload Window from the command palette.
Cursor Pro
  1. Open Settings → Models.
  2. Enable Override OpenAI Base URL and enter https://api.nghimmo.com/v1.
  3. Paste the key, verify, then add nghi/claude-sonnet-4.6.
  4. Disable unrelated default models if Cursor routes to the wrong provider.
Chatbox Web / Desktop
  1. Open Settings → Model Provider → Claude.
  2. Use API host https://api.nghimmo.com/v1 and paste your key.
  3. Add nghi/claude-sonnet-4.6, then select Test Model.
Codex / OpenAI ResponsesGPT coding, agents, review and desktop clientsExpand
BASE URLhttps://api.nghimmo.com/v1
DEFAULTnghi/gpt-5.5

Available Codex models

nghi/gpt-5.5 # stable default nghi/gpt-5.6-sol # strongest, higher usage nghi/gpt-5.6-terra # balanced nghi/gpt-5.6-luna # fast and economical nghi/gpt-5.4 # large context nghi/gpt-5.4-mini # small tasks and subagents nghi/codex-auto-review # automated code review

Setup by application

ChatGPT / Codex Desktop
  1. Install the official ChatGPT desktop application.
  2. Configure the desktop gateway using your Codex key.
  3. Fully quit and reopen ChatGPT, then use ChatGPT Work or Codex.
Cursor Pro
  1. Open Settings → Models.
  2. Enable Override OpenAI Base URL: https://api.nghimmo.com/v1.
  3. Paste the Codex key, verify, and add nghi/gpt-5.5.
  4. Disable default models that may override your custom route.
VS Code / Cursor / Cline / Roo Code

Select OpenAI Compatible and enter:

Base URL : https://api.nghimmo.com/v1 API Key : sk-your-alpha-key Model : nghi/gpt-5.5
Continue extension

Add this entry to ~/.continue/config.yaml:

models: - name: Alpha APIs Codex provider: openai model: nghi/gpt-5.5 apiBase: https://api.nghimmo.com/v1 apiKey: sk-your-alpha-key
Chatbox / Open WebUI / other apps

Select OpenAI API Compatible, use https://api.nghimmo.com/v1, paste your key, add nghi/gpt-5.5, and test the model.

Grok / xAI-compatibleReasoning, large context, agents and fast codingExpand
BASE URLhttps://api.nghimmo.com/v1
DEFAULTnghi/grok-4.5

Available Grok models

nghi/grok-4.5 nghi/grok-4.3 nghi/grok-4.20-0309-reasoning nghi/grok-4.20-0309-non-reasoning nghi/grok-4.20-multi-agent-0309 nghi/grok-build-0.1 nghi/grok-composer-2.5-fast nghi/grok-4.5-latest nghi/grok-build-latest nghi/grok-3-mini nghi/grok-3-mini-fast

Setup by application

Cursor Pro
  1. Open Settings → Models.
  2. Enable Override OpenAI Base URL: https://api.nghimmo.com/v1.
  3. Paste the Grok key, verify, and add nghi/grok-4.5.
Cline / Roo Code / other IDEs

Select OpenAI Compatible and configure:

Base URL : https://api.nghimmo.com/v1 API Key : sk-your-alpha-key Model : nghi/grok-4.5
Continue extension
models: - name: Alpha APIs Grok provider: openai model: nghi/grok-4.5 apiBase: https://api.nghimmo.com/v1 apiKey: sk-your-alpha-key
Chatbox / Open WebUI / other apps

Select OpenAI API Compatible, enter the base URL and key above, add nghi/grok-4.5, then test the connection.

03

Direct API requests

Codex · Responses API
curl https://api.nghimmo.com/v1/responses \ -H "Authorization: Bearer sk-your-alpha-key" \ -H "Content-Type: application/json" \ -d '{"model":"nghi/gpt-5.5","input":"Review this code"}'
Grok · Chat Completions
curl https://api.nghimmo.com/v1/chat/completions \ -H "Authorization: Bearer sk-your-alpha-key" \ -H "Content-Type: application/json" \ -d '{"model":"nghi/grok-4.5","messages":[{"role":"user","content":"Hello"}]}'
Environment variables
export ALPHA_API_KEY="sk-your-alpha-key" export OPENAI_BASE_URL="https://api.nghimmo.com/v1" export ANTHROPIC_BASE_URL="https://api.nghimmo.com"
04

Errors, key checking and warranty

401 · Invalid or missing key

Confirm there are no spaces around the key and that the header is Authorization: Bearer sk-.... Check the key at Alpha APIs Key Check.

404 · Model not found

Copy the exact identifier from this page. Do not mix Claude, Codex and Grok model families.

429 · Limit or quota reached

Check remaining tokens, reduce parallel requests, and retry with exponential backoff. If quota is exhausted, purchase a new package.

Context too long

Start a new conversation, remove unrelated attachments, shorten logs, or use /clear. In Claude Code, use /compact periodically.

Warranty and refund review

If a key cannot be used during its stated warranty period, contact support with the Alpha APIs order number, exact error, model, client and timestamp. Eligible refunds are calculated from the unused token balance. Never post the full key in a public group.

Open the Support Center →

05

Use fewer tokens

Reset context

Use /clear when switching tasks and /compact every 30–50 turns.

Choose the right model

Use Haiku, Grok Mini or GPT Mini for simple operations and reserve larger models for difficult work.

Send only what matters

Attach relevant files only, trim long logs, and avoid repeatedly sending unchanged context.

Model availability can change upstream. Use the exact identifiers listed here and visit Available Models for the concise catalogue.