Claude Opus 4
VerifiedAnthropic's advanced multimodal model for complex reasoning.
About Claude Opus 4
Claude Opus 4 was developed by Anthropic as a high-capacity multimodal system. It accepts inputs across images, text, and files while supporting an extensive context length. The architecture emphasizes careful handling of diverse data types.
Its strengths lie in detailed interpretation of combined visual and textual information. The model delivers structured outputs suited to analysis-heavy tasks. Safety considerations remain central to its design and deployment.
Typical usage includes document review, visual data interpretation, and multi-step reasoning projects. Organizations access it through APIs for integration into enterprise tools. Researchers and analysts apply it where large context and multimodal input are required.
Capabilities
How Claude Opus 4 compares
Claude Opus 4 (striped bar) vs other multimodal on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · Claude Opus 4 ranks #131 of 139
Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Long document and file analysis
The 200,000-token context window combined with document analysis capabilities allows Claude Opus 4 to review, summarize, and reason across very large files in a single pass.
Image and visual data interpretation
Multimodal vision features enable detailed understanding of images, charts, and diagrams alongside textual instructions for tasks like visual QA or design review.
Complex code and analytical projects
Strong performance in code generation, debugging, and nuanced instruction following supports multi-step analytical reasoning and software development workflows.
Strengths & limitations
Strengths
- +Strong coherence over extended outputs
- +Careful and safety-aligned responses
- +High-quality reasoning on ambiguous tasks
- +Effective multimodal integration
Limitations
- –Can be overly cautious with edge-case queries
- –Slower response times on complex inputs
- –No native support for audio or video
Cost calculator
Estimate what Claude Opus 4 would cost for your usage.
Based on Claude Opus 4's $15.00/1M input · $75.00/1M output. Estimate only — actual cost varies by provider and caching.
Quick start
OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. Only the model slug changes between models.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://openrouter.ai/api/v1",
apiKey: process.env.OPENROUTER_API_KEY,
});
const completion = await client.chat.completions.create({
model: "anthropic/claude-opus-4",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: anthropic/claude-opus-4
Editor's verdict
Claude Opus 4 is Anthropic's proprietary multimodal with a 200K-token context window.
At $75.00 per 1M output tokens, it is premium-priced for its class.
It is available through Anthropic's API and aggregators like OpenRouter.
Best suited to strong coherence over extended outputs and careful and safety-aligned responses.
Frequently asked questions
Claude Opus 4 provides a 200,000-token context window suitable for long-context reasoning and large document processing.
User reviews
Real, verified reviews from the community shape this model's rating.
Loading reviews…
Other Claude models
Sibling versions in the Claude family from Anthropic.
Similar models
Other multimodal worth comparing.