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AU Anthropic Claude Opus 4.6 vs Claude Sonnet 4.5

Claude Sonnet 4.5 is cheaper on output tokens. Choose AU Anthropic Claude Opus 4.6 or Claude Sonnet 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.

SpecAU Anthropic Claude Opus 4.6Claude Sonnet 4.5
ProviderAmazon BedrockAnthropic
Input / 1M tokens$5.50$3.00
Output / 1M tokens$27.50$15.00
Context window1M1M
Parameters——
Open weightsNoNo
ReleasedFeb 2026Sep 2025
LiveBench score—67.9
LMArena (Chatbot Arena) Elo score—1438
GPQA Diamond score—82.3
FrontierMath score—15.2
LMArena WebDev Elo score—1394
Epoch Capabilities Index score—147
SWE-bench Multilingual score—67.0
SWE-bench Verified score—74.8

FAQ

Is AU Anthropic Claude Opus 4.6 or Claude Sonnet 4.5 cheaper?

Claude Sonnet 4.5 is cheaper on output tokens ($15.00 vs $27.50 per 1M).

Which has the larger context window, AU Anthropic Claude Opus 4.6 or Claude Sonnet 4.5?

Both models offer a similar context window.

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.