Claude 4.6 Sonnet

Closed Source

Closed Weights

Parameters

Undisclosed

Context Length

200K

Modality

Multimodal

Architecture

Undisclosed

License

Proprietary

Release Date

1 Feb 2026

Knowledge Cutoff

Aug 2025

API Pricing (per 1M)

Input: $1.50 · Output: $7.50

Evaluation Benchmarks

Rank

#38

Benchmark	Score	Rank
StackUnseen ProLLM Stack Unseen	0.891	7
General Text Text Arena	1473	32
Agentic Index Artificial Analysis	max 0.33	54
Coding Index Artificial Analysis	max 0.63	63

Rankings

Overall Rank

#38

Coding Rank

#29

About Claude 4.6 Sonnet

Claude 4.6 Sonnet delivers the optimal balance of intelligence, speed, and cost for enterprise applications. Features enhanced reasoning, coding capabilities, and multimodal understanding with vision support. Excels at complex tasks including data analysis, content generation, code review, and conversational AI. Offers improved accuracy and reliability over previous generations with constitutional AI safety measures.

Technical Specifications

Architecture specifications are undisclosed for proprietary models.

Resources

Official Documentation

About Claude 4.6

Anthropic's Claude 4.6 series introduces breakthrough capabilities in extended reasoning, creative collaboration, and safety. Features variants including Opus Thinking with advanced chain-of-thought processing and Sonnet for balanced performance. These models excel at complex reasoning tasks, coding, creative writing, and nuanced analysis with enhanced constitutional AI safeguards.

Other Claude 4.6 Models

No related models available