Comparison
Claude Sonnet 4.6 vs Claude Opus 4.6 Fast
Side-by-side comparison of Anthropic Claude Sonnet 4.6 and Anthropic Claude Opus 4.6 Fast. Pricing, quality benchmarks, and context windows.
Quality Benchmarks
LiveBench / 0-100
Claude Sonnet 4.6
78.1Frontier
Claude Opus 4.6 Fast
78.7Frontier
Claude Sonnet 4.6
Claude Opus 4.6 Fast
Input Price (per 1M)
$3.00
$30.00
Output Price (per 1M)
$15.00
$150.00
Context Window
1M
1M
Max Output
128K
128K
Pricing per 1M Tokens
$3.00
90% cheaper
Input
Input
$30.00
Input
$15.00
90% cheaper
Output
Output
$150.00
Output
Token Limits
Context
1M
Context
Context
1M
Max Output
128K
Max Output
Max Output
128K
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