---
title: Anthropic: Claude Opus 4.8 API | Text Generation | ModelsLab
description: Build with Anthropic: Claude Opus 4.8 API by Anthropic. Text generation, chat, code, and reasoning. Pay-per-use. Free tier.
url: https://modelslab.com/models/anthropic/anthropic-claude-opus-4.8.md
canonical: https://modelslab.com/models/anthropic/anthropic-claude-opus-4.8.md
type: product
component: Playground/LLM/Index
generated_at: 2026-06-03T19:32:37.574379Z
---

Anthropic: Claude Opus 4.8
---

 [LLMs.txt](https://modelslab.com/models/open_router/anthropic-claude-opus-4.8/llms.txt) [.md](https://modelslab.com/models/anthropic/anthropic-claude-opus-4.8.md)

Anthropic: Claude Opus 4.8
---

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### Anthropic: Claude Opus 4.8

anthropic anthropic-claude-opus-4.8

Copy model ID

PricingInput $5.00 / 1M tokens

Output $25.00 / 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 Tokens1000

Top P0.9

Frequency Penalty0

Presence Penalty0

Model Info

Support

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About Anthropic: Claude Opus 4.8
---

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...

### Technical Specifications

Model IDanthropic-claude-opus-4.8

CategoryLLM Models

TaskText Generation

Price$15 per million tokens

AddedMay 28, 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 Anthropic: Claude Opus 4.8 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": "anthropic-claude-opus-4.8",
        "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

Anthropic: Claude Opus 4.8 API costs $15.000000 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 Anthropic](https://modelslab.com/models/open_router) [View Pricing](https://modelslab.com/pricing)

Anthropic: Claude Opus 4.8 FAQ
---

### What is Anthropic: Claude Opus 4.8?

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...

### How do I use the Anthropic: Claude Opus 4.8 API?

You can integrate Anthropic: Claude Opus 4.8 into your application with a single API call. Sign up on ModelsLab to get your API key, then use the model ID "anthropic-claude-opus-4.8" in your API requests. We provide SDKs for Python, JavaScript, and cURL examples in the API documentation.

### How much does Anthropic: Claude Opus 4.8 cost?

Anthropic: Claude Opus 4.8 costs $15.000000 per million tokens. ModelsLab uses pay-per-use pricing with no minimum commitments. A free tier is available to get started.

### What is the Anthropic: Claude Opus 4.8 model ID?

The model ID for Anthropic: Claude Opus 4.8 is "anthropic-claude-opus-4.8". Use this ID in your API requests to specify this model.

### Does Anthropic: Claude Opus 4.8 have a free tier?

Yes, ModelsLab offers a free tier that lets you try Anthropic: Claude Opus 4.8 and other AI models. Sign up to get free API credits and start building immediately.

---

*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 - 2026-06-04*