Claude Sonnet 4 vs Claude Opus 4.1
Claude Sonnet 4 offers 1.0M tokens context vs 200K tokens, Claude Sonnet 4 is more cost-effective. Compare full specs, pricing, and choose the best model for your use case.
Quick Overview
Claude Sonnet 4
OpenCode Zen
1.0M tokens context • $3.00 / $15.00 per 1M tokens
View full specifications →Claude Opus 4.1
OpenCode Zen
200K tokens context • $15.00 / $75.00 per 1M tokens
View full specifications →Detailed Comparison
Specification
Claude Sonnet 4
Claude Opus 4.1
Provider
OpenCode Zen
OpenCode Zen
Context Window
1.0M tokens
200K tokens
Max Output Tokens
64K tokens
32K tokens
Input Pricing (per 1M tokens)
$3.00
$15.00
Output Pricing (per 1M tokens)
$15.00
$75.00
Release Date
May 2025
Aug 2025
Capabilities
Capability
Claude Sonnet 4
Claude Opus 4.1
Text Generation
Vision
Function Calling
Advanced Reasoning
File Attachments
Which Model Should You Choose?
Choose Claude Sonnet 4 if:
- • You need a larger context window
- • Cost efficiency is a priority