One Key.
All AI.

Text. Image. Video. Audio.

A single API key for OpenAI, Claude, Gemini, and Grok. Generate text, images, video, and audio. Prepaid credits. No lock-in.

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Features

Full Usage Control

New Project

Endpoint

api.1key4ai.com/v1

API Key

1k4-proj_xxxx···xxxx

Custom Model

1k4-custom

Provider

Select provider...
40 models · 89ms
Your Usage at a Glance

$0.00

spent

0

requests

$0.000

avg/req

Projects will appear here

One endpoint. Any model.

Point any OpenAI-compatible app at your OneKey endpoint. Use models by name in each request.

// Choose any model per request

POST /v1/chat/completions

{

"model": "claude-sonnet-4-5",

"messages": [{ ... }]

}

// Or switch to GPT-5 — same key

"model": "gpt-5"

Or set 1k4-custom as your model and switch providers from the dashboard. Every connected app updates instantly.

TypingMindCursorAny App
1k4-custom
Claude Sonnet 4.5Anthropic

Change the model once. Every connected app updates.

Capabilities

What’s live today, and what’s next.

Text Generation

Access models across OpenAI, Anthropic, Google, and xAI.

Thinking & Reasoning

o3, o4-mini, Claude extended thinking.

Code Execution

Generate, review, and execute code with Codex models.

Tool Use

Function calling and structured output across all providers.

Image Generation

DALL-E 3, GPT Image 1, Imagen 4, Flux 2, and more. Generate images from text prompts.

Video Generation

Sora 2 and Sora 2 Pro. Text-to-video with async polling.

Audio

Text-to-speech (TTS, TTS HD) and speech-to-text (Whisper).

Coming Soon

Vision

Coming Soon

Image understanding and analysis across providers.

Transparent Pricing

Pay per token, per image, per second. No subscriptions, no hidden fees. Credits never expire.

View all model prices

FAQ

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