Claude Sonnet 5 — reviews, specs & pricing

The best Claude balance of speed and intelligence. 1M context, $3/$15 per 1M tokens list price (introductory $2/$10 through August 31, 2026).

Summary

Claude Sonnet 5 by Anthropic delivers an exceptional balance of speed and high-tier intelligence, specifically optimized for advanced chat and complex coding tasks. With a massive 1-million-token context window, it effortlessly processes expansive documents and entire code repositories in a single query. It represents a highly cost-effective yet powerful solution for developers requiring deep reasoning without sacrificing performance.

Sample use case

A software development team can utilize Claude Sonnet 5 to perform comprehensive code reviews and automated refactoring across a massive enterprise codebase. By ingestion of hundreds of source files into the 1M token context window, the model can trace complex dependencies, identify security vulnerabilities, and generate optimized, production-ready code suggestions in seconds.

Specifications

  • Provider: anthropic
  • License: closed
  • Context: 1000k tokens
  • Input price: $3/M tok
  • Output price: $15/M tok

Pros

  • Perfect balance of speed and intelligence
  • Massive 1M token context capacity
  • Excellent code generation and debugging
  • Attractive introductory pricing through August 2026

Cons

  • List price increases significantly after promotional period
  • Overpowered for simple, low-complexity chat tasks
  • Modality is limited to text and code only

Average rating 0.0 from 0 community reviews on Reviuws.

Frequently asked questions

What is Claude Sonnet 5?

Claude Sonnet 5 by Anthropic delivers an exceptional balance of speed and high-tier intelligence, specifically optimized for advanced chat and complex coding tasks. With a massive 1-million-token context window, it effortlessly processes expansive documents and entire code repositories in a single query. It represents a highly cost-effective yet powerful solution for developers requiring deep reasoning without sacrificing performance.

How much does Claude Sonnet 5 cost?

Claude Sonnet 5 costs $3 per million input tokens and $15 per million output tokens.

Is Claude Sonnet 5 open source?

Claude Sonnet 5 is released under the closed license.