Introducing Mercury 3

Read the blog

Introducing Mercury 3

Read the blog

Models

Build high-performance AI apps with Mercury

Inception’s diffusion LLMs (dLLMs) deliver frontier LLM quality at 5x greater speed.

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Trusted by teams at

Mercury diffusion models introduce
blazing fast inference with frontier quality
at a fraction of the cost of other top-tier models.

(Un)paralled speeds

Our models run at 1000+ tokens per second on commercial NVIDIA GPUs, enabling instant, in-the-flow AI solutions.

Exceptional Quality

Comparable quality to cost-optimized frontier models like GPT-6 Luna (medium) and Claude Haiku 5.5 (medium).

Seamless integration

Our models are OpenAI compatible and a drop-in replacement for traditional LLMs.

Discover our models

New API keys come with 100 million free tokens

Mercury 3

The flagship

50% OFF

1,068

tokens/s

tokens context

Our most intelligent reasoning dLLM, at our lowest price. Ideal for the most complex applications where quality and speed matter.

Input

$0.20 $0.10 / 1M Tokens

Cached Input

$0.02 $0.01 / 1M Tokens

Output

$0.70 $0.35 / 1M Tokens

Get started

Read API Docs

Mercury Voice

Real-time reasoning

50% OFF

Our dLLM optimized for voice agents, delivers time-to-first-token (TTFT) under 170ms.

Input

$0.40 $0.20 / 1M Tokens

Output

$1.50 $0.75 / 1M Tokens

Get started

Docs

Mercury Decide

Decision model

50% OFF

Our decision model for structured choices. Send state and typed questions, get answers with calibrated probabilities, and escalate the unsure ones to a human.

Input

$0.04 $0.02 / 1M Tokens

Output

$0 / 1M Tokens

Contact sales

Docs

* Mercury 2 and Mercury 2.5 are no longer available to new users. Existing customers with usage before October 19, 2026 will keep access until November 15, 2026. Enterprise customers remain supported under their agreements. For migration guidance to Mercury 3, contact your Inception representative or view our docs.

Get started with Mercury today

Read our Docs

Create your account

Create an Inception Platform account or sign in directly if you already have one.

Create your API Key

Go to API Keys and create a new API key. New API keys comes with 100 million free tokens

Make your first request

We are OpenAI API compatible and are supported through libraries including AISuite, LiteLLM, and LangChain.

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import requests
 
response = requests.post(
    'https://api.inceptionlabs.ai/v1/chat/completions',
    headers={
        'Content-Type': 'application/json',
        'Authorization': 'Bearer INCEPTION_API_KEY'
    },
    json={
        'model': 'mercury-3',
        'messages': [
            {'role': 'user', 'content': 'What is a diffusion model?'}
        ],
        'max_tokens': 1000
    }
)
data = response.json()

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import requests
 
response = requests.post(
    'https://api.inceptionlabs.ai/v1/chat/completions',
    headers={
        'Content-Type': 'application/json',
        'Authorization': 'Bearer INCEPTION_API_KEY'
    },
    json={
        'model': 'mercury-3',
        'messages': [
            {'role': 'user', 'content': 'What is a diffusion model?'}
        ],
        'max_tokens': 1000
    }
)
data = response.json()