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Claude Opus 4.8 vs Claude Sonnet 4.6

Claude Sonnet 4.6 leads in 5 of 8 categories

Arena ELO

Claude Sonnet 4.6

Cheaper

Claude Sonnet 4.6

Faster

Claude Sonnet 4.6

Detailed Comparison

CategoryClaude Opus 4.8Claude Sonnet 4.6
ProviderAnthropic Anthropic
Context Window200K 1M WIN
Input Price ($/1M)$5 $3 WIN
Output Price ($/1M)$25 $15 WIN
Arena ELON/A 1440 WIN
CodingN/A 79.6% SWE-bench
ReasoningN/A 72.5% OSWorld
Speed (tokens/sec)N/A ~80 t/s WIN
Open SourceNo No

Frequently Asked Questions

Which is cheaper, Claude Opus 4.8 or Claude Sonnet 4.6?

Claude Sonnet 4.6 is approximately 40% cheaper than Claude Opus 4.8 per million tokens.

Which is better for coding, Claude Opus 4.8 or Claude Sonnet 4.6?

Claude Opus 4.8 scores N/A on coding benchmarks, while Claude Sonnet 4.6 scores 79.6% SWE-bench.

Which has a larger context window?

Claude Opus 4.8 supports 200K context, while Claude Sonnet 4.6 supports 1M.

Is Claude Opus 4.8 or Claude Sonnet 4.6 open source?

Claude Opus 4.8 is proprietary. Claude Sonnet 4.6 is proprietary.

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