Claude Sonnet 4 (latest) vs Claude Sonnet 3.5 v2
Claude Sonnet 4 (latest) includes advanced reasoning. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Claude Sonnet 4 (latest)
Anthropic
200K tokens context • $3.00 / $15.00 per 1M tokens
View full specifications →Claude Sonnet 3.5 v2
Anthropic
200K tokens context • $3.00 / $15.00 per 1M tokens
View full specifications →Detailed Comparison
Specification
Claude Sonnet 4 (latest)
Claude Sonnet 3.5 v2
Provider
Anthropic
Anthropic
Context Window
200K tokens
200K tokens
Max Output Tokens
64K tokens
8K tokens
Input Pricing (per 1M tokens)
$3.00
$3.00
Output Pricing (per 1M tokens)
$15.00
$15.00
Release Date
May 2025
Oct 2024
Capabilities
Capability
Claude Sonnet 4 (latest)
Claude Sonnet 3.5 v2
Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments
Which Model Should You Choose?
Choose Claude Sonnet 4 (latest) if:
- • You need advanced reasoning