Claude Sonnet 4.6
VerifiedAnthropic's Claude Sonnet 4.6 excels at long-context multimodal analysis.
About Claude Sonnet 4.6
Developed by Anthropic, Claude Sonnet 4.6 uses a proprietary architecture optimized for safety and coherence across very large inputs. Its one-million-token context enables processing of lengthy reports, codebases, or conversation histories without losing track of earlier details.
The model integrates text, images, and files in a single session, supporting tasks that require simultaneous understanding of visual and written information. This design reduces the need for multiple separate models when handling mixed-media content.
Typical applications include legal document review with embedded charts, scientific literature analysis paired with figures, and software development involving multiple source files and diagrams. Organizations use it where maintaining context across large multimodal datasets is essential.
Capabilities
How Claude Sonnet 4.6 compares
Claude Sonnet 4.6 (striped bar) vs other multimodal on intelligence, speed and price.
Price
USD per 1M output tokens · Lower is better · Claude Sonnet 4.6 ranks #48 of 63
Sources: Artificial Analysis (intelligence, speed) · OpenRouter (price).
Best for
Long-form document analysis
The model processes and reasons over documents up to one million tokens, enabling extraction of insights from extensive reports, research papers, or code repositories in a single pass.
Vision-based image interpretation
It performs detailed analysis of images combined with text, supporting tasks such as diagram explanation, visual data extraction, and multimodal problem solving.
Complex code debugging
Strong performance in generating, reviewing, and debugging code allows step-by-step identification of issues across large projects while maintaining instruction adherence.
Strengths & limitations
Strengths
- +Strong logical coherence
- +Careful safety alignment
- +Effective handling of large contexts
- +High-quality multimodal integration
Limitations
- –Conservative refusal patterns on edge cases
- –Slower response times on complex inputs
- –Knowledge limited to training cutoff
Cost calculator
Estimate what Claude Sonnet 4.6 would cost for your usage.
Based on Claude Sonnet 4.6's $3.00/1M input · $15.00/1M 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-sonnet-4.6",
messages: [{ role: "user", content: "Hello!" }],
});
console.log(completion.choices[0].message.content);Model slug: anthropic/claude-sonnet-4.6
Editor's verdict
Claude Sonnet 4.6 is Anthropic's proprietary multimodal with a 1000K-token context window.
At $15.00 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 logical coherence and careful safety alignment.
Frequently asked questions
Claude Sonnet 4.6 supports a context window of 1,000,000 tokens.
User reviews
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