---
title: Inception: Mercury 2.5 API | Text Generation | ModelsLab
description: Build with Inception: Mercury 2.5 API by Inception. Text generation, chat, code, and reasoning. Plans from $21/month.
url: https://modelslab.com/models/inception/inception-mercury-2.5.md
canonical: https://modelslab.com/models/inception/inception-mercury-2.5
type: product
component: Playground/LLM/Index
generated_at: 2026-09-09T20:56:34.427998Z
---

Inception: Mercury 2.5
---

 [LLMs.txt](https://modelslab.com/models/inception/inception-mercury-2.5/llms.txt) [.md](https://modelslab.com/models/inception/inception-mercury-2.5.md)

Inception: Mercury 2.5
---

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### Inception: Mercury 2.5

inception inception-mercury-2.5

Copy model ID

PricingInput $0.04 / 1M tokens

Output $0.15 / 1M tokens

API EndpointsOpenAI Compatible

`https://modelslab.com/api/v7/llm/chat/completions`Endpoint

Anthropic Compatible

`https://modelslab.com/api/v7/llm/v1/messages`Messages

`https://modelslab.com/api/v7/llm/v1/messages/count_tokens`Count Tokens

`https://modelslab.com/api/v7/llm/v1/models`Models

Use with Claude Code

cURL Example

ParametersSystem MessageYou are a helpful AI assistant specialized in providing accurate and detailed responses.

Temperature0.7

Max Tokens4000

Top P0.9

Frequency Penalty0

Presence Penalty0

Thinkinglow

lowmediumhigh

Deeper thinking spends more of the Max Tokens budget before the answer starts.

Model Info

Support

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About Inception: Mercury 2.5
---

Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception. Instead of generating tokens sequentially, Mercury 2.5 produces and refines multiple tokens in parallel, achieving...

### Technical Specifications

Model IDinception-mercury-2.5

CategoryLLM Models

TaskText Generation

Price$0.095 per million tokens

AddedSeptember 8, 2026

### Key Features

- Chat completion and multi-turn conversation API
- Streaming response with token-by-token output
- Function calling and tool use support
- System prompts and role-based messaging
- JSON mode and structured output

### Quick Start

Integrate Inception: Mercury 2.5 into your application with a single API call. Get your API key from the [pricing page](https://modelslab.com/pricing) to get started.

PythonJavaScriptcURLPHP

```
<code>import requests
import json

url = "https://modelslab.com/api/v7/llm/chat/completions"

headers = {
    "Content-Type": "application/json"
}

data = {
        "model_id": "inception-mercury-2.5",
        "messages": [
            {
                "role": "user",
                "content": "Hello!"
            }
        ],
        "max_tokens": 1000,
        "key": "YOUR_API_KEY"
    }

try:
    response = requests.post(url, headers=headers, json=data)
    response.raise_for_status()  # Raises an HTTPError for bad responses (4XX or 5XX)
    result = response.json()
    print("API Response:")
    print(json.dumps(result, indent=2))
except requests.exceptions.HTTPError as http_err:
    print(f"HTTP error occurred: {http_err} - {response.text}")
except Exception as err:
    print(f"Other error occurred: {err}")</code>
```

### Pricing

Inception: Mercury 2.5 API costs $0.095 per million tokens. Pay only for what you use with no minimum commitments. [View pricing plans](https://modelslab.com/pricing)

### Use Cases

- AI chatbots and virtual assistants
- Code generation and developer tools
- Content writing and copywriting automation
- Data analysis, summarization, and extraction

[Browse LLM Models](https://modelslab.com/models?feature=llmaster) [More from Inception](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing)

Inception: Mercury 2.5 FAQ
---

### What is Inception: Mercury 2.5?

Mercury 2.5 is the fastest reasoning LLM, and the latest diffusion LLM (dLLM) from Inception. Instead of generating tokens sequentially, Mercury 2.5 produces and refines multiple tokens in parallel, achieving...

### How do I use the Inception: Mercury 2.5 API?

You can integrate Inception: Mercury 2.5 into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "inception-mercury-2.5" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation.

### How much does Inception: Mercury 2.5 cost?

Inception: Mercury 2.5 costs $0.095 per million tokens. ModelsLab plans start at $21/month (Basic), and the $149/month Open Source plan includes unlimited generation on open-source models.

### What is the Inception: Mercury 2.5 model ID?

The model ID for Inception: Mercury 2.5 is "inception-mercury-2.5". Use this ID in your API requests to specify this model.

### Do I need a paid plan to use Inception: Mercury 2.5?

Yes. ModelsLab is subscription-based with no free tier — plans start at $21/month (Basic, 3,250 API calls). The $149/month Open Source Unlimited plan includes unlimited generation across open-source models; premium third-party models are billed per call from your wallet.

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*This markdown version is optimized for AI agents and LLMs.*

**Links:**
- [Website](https://modelslab.com)
- [API Documentation](https://docs.modelslab.com)
- [Blog](https://modelslab.com/blog)

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*Generated by ModelsLab - 2026-09-10*