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Grok API

UnificAlly serves 19 xAI models through one API key: 8 language models, 2 image models, 7 video models and 2 audio models. Language models start at $0.15 per 1M input tokens (Grok Build 0.1). Image, video and audio models start at $0.01/sec (Grok Imagine 1.5 Lite Video) and $0.01 per image (Grok Imagine 1.0 Image). Everything is billed from a prepaid balance with no subscription.

Call the language models in the OpenAI format at /v1/chat/completions or the Anthropic format at /v1/messages, with streaming and tool use; the image, video and audio models take POST /v1/tasks with a model ID and an input object.

UnificAlly is an independent API, not affiliated with or endorsed by xAI: you use a UnificAlly API key and balance, not an account with xAI.

The xAI image and video models in the table are grouped, with a playground on each, on the Grok Imagine API page.

All 19 xAI models on UnificAlly

기준 당사 요금이며, 배포할 때마다 실시간 가격 목록에서 갱신됩니다.
모델시작 요금
Grok 4.7 API

LLM

500k context, image input, four reasoning efforts, 46.3% CursorBench 4.0, #5 Harvey Legal Agent.

$0.3 in / $0.9 out per 1M tokens
Grok 4.6 API

LLM

500k context, image input, four reasoning efforts, 95.6% SWE-bench Verified, #1 CursorBench 3.2.

$0.3 in / $0.9 out per 1M tokens
Grok 4.5 API

LLM

500k context, image input, three reasoning efforts, 79.3% Terminal-Bench 2.1, trained with Cursor.

$0.3 in / $0.9 out per 1M tokens
Grok 4.3 API

LLM

1M context, image input, four reasoning efforts incl. none, 115.8 tok/s, 98% Tau2-Bench Telecom.

$0.1875 in / $0.375 out per 1M tokens
Grok 4.20 Reasoning API

LLM

1M context, image input, thinking on, agentic tool calling, 98.9 tok/s, 72.2% SWE-bench Verified.

$0.1875 in / $0.375 out per 1M tokens
Grok 4.20 Non-Reasoning API

LLM

1M context, image input, no thinking phase, 0.64s first token, 95.8 tok/s, agentic tool calling.

$0.1875 in / $0.375 out per 1M tokens
Grok 4.20 Multi-Agent API

LLM

Leader agent plus 4 or 16 sub-agents in parallel, 1M context, image input, Responses API only.

$0.1875 in / $0.375 out per 1M tokens
Grok Build 0.1 API

LLM

256k context, image input, agentic coding with function calling and MCP, 0.53s first token.

$0.15 in / $0.3 out per 1M tokens
Grok Imagine 2.0 Image API

텍스트-이미지

Quality-focused xAI text-to-image and reference editing with up to 5 input images.

from $0.02 per image
Grok Imagine 1.0 Image API

텍스트-이미지

Fast xAI text-to-image and reference editing with up to 5 images.

$0.01 per image
Grok Imagine 1.5 Lite Video API

텍스트-비디오

Cheapest Grok video: T2V or I2V, 1–15s, 480p to 1080p, with sound.

from $0.01/sec
Grok Imagine 1.5 Fast Video API

텍스트-비디오

T2V, I2V, or reference images with style presets, faster results at 480p, 720p, or 1080p.

from $0.04/sec
Grok Imagine 1.5 Fast Video Extend API

비디오-비디오

Extend a finished Fast video by 6 or 10 seconds, preset or custom mode.

from $0.04/sec
Grok Imagine 1.5 Video API

텍스트-비디오

T2V, I2V or 14 references, end frame, voices, 1–15s at native 1080p.

from $0.04/sec
Grok Imagine 1.0 Video Edit API

비디오-비디오

Prompt-driven edit of any clip by URL, 1.0 model, same length and ratio, up to 720p.

from $0.025/sec
Grok Imagine 1.0 Video Extend API

비디오-비디오

Add 2–10 seconds to any 2–15 second clip from its URL, 1.0 model, up to 720p.

from $0.025/sec
Grok Imagine Upscale API

비디오-비디오

Upscale a finished Grok Imagine video to HD from its task ID.

$0.05 per video
Grok Text to Speech API

텍스트 음성 변환

xAI TTS: preset voices, 20 languages, speed control, mp3, wav, or pcm.

$0.0075/1000 characters
Grok Speech to Text API

음성 텍스트 변환

xAI transcription: word timestamps, language detection, speaker diarization.

$0.05/hour

How to call the Grok API

Use your UnificAlly API key and any model ID from the model pages. Existing OpenAI clients only need the base URL changed to https://api.unifically.com/v1.

OpenAI format: POST /v1/chat/completions

curl -X POST https://api.unifically.com/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "xai/grok-4.7",
    "messages": [
      {"role": "user", "content": "Analyze the tradeoffs in this architecture."}
    ]
  }'

Image and video models: POST /v1/tasks

# 1. Start a task
curl -X POST https://api.unifically.com/v1/tasks \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{
    "model": "xai/grok-imagine-2.0-image",
    "input": {
      "prompt": "A cinematic portrait with natural skin texture and detailed lighting",
      "aspect_ratio": "2:3"
    }
  }'

# 2. Read the result with the task_id from step 1
curl https://api.unifically.com/v1/tasks/TASK_ID \
  -H "Authorization: Bearer YOUR_API_KEY"

Grok API FAQ

Is this the official Grok API from xAI?
No. UnificAlly is an independent API that serves xAI's models; it is not affiliated with or endorsed by xAI. You sign up with UnificAlly, create a UnificAlly API key and pay from a UnificAlly balance. The request formats are the same OpenAI and Anthropic formats, so existing code needs a new base URL, API key and model ID.
How much does the Grok API cost on UnificAlly?
Each model has its own rate, shown in the table above and on the pricing page. The lowest language model rate right now is $0.15 per 1M input tokens (Grok Build 0.1). Image, video and audio models start at $0.01/sec (Grok Imagine 1.5 Lite Video) and $0.01 per image (Grok Imagine 1.0 Image). You pay per token or per generation from a prepaid balance: no subscription, no monthly minimum, and the balance does not expire. Failed generations are not charged. The Grok 4.6 API pricing guide breaks the rates down model by model.
Is Grok Imagine included in the Grok API?
Yes. The 9 Grok Imagine models for images and video run on the same API key through POST /v1/tasks, and the Grok Imagine API page groups them by generation. Every Grok language model works on /v1/chat/completions except Grok 4.20 Multi-Agent, which xAI serves on the Responses API only (/v1/responses).
Can I call the Grok models with the OpenAI SDK?
Yes. Point your OpenAI client at https://api.unifically.com/v1, use a UnificAlly API key and set model to an ID such as xai/grok-4.7 (each model page lists its ID). Anthropic SDK code works too on /v1/messages.
Can I try the Grok models before topping up?
Yes. A new UnificAlly account starts with a $0.50 signup balance, and every model page has a browser playground that runs on it, so you can compare models before writing any code.