Claude Opus 4.6 vs Claude Sonnet 4.6
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Opus 4.6 by Anthropic wins on 12 of 17 benchmarks against Claude Sonnet 4.6 by Anthropic, which leads on 4. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from the AI Value Index.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Claude Opus 4.6 scores 1496 on Chatbot Arena ELO compared to Claude Sonnet 4.6's 1395, while Claude Sonnet 4.6 scores 84.0% on MMLU-Pro compared to Claude Opus 4.6's 82.0%, while Claude Opus 4.6 scores 91.0% on IFEval compared to Claude Sonnet 4.6's 89.0%.
Coding: In coding, Claude Opus 4.6 scores 93.5% on HumanEval+ compared to Claude Sonnet 4.6's 91.0%, while Claude Opus 4.6 scores 80.8% on SWE-bench Verified compared to Claude Sonnet 4.6's 79.6%, while Claude Opus 4.6 scores 72.0% on LiveCodeBench compared to Claude Sonnet 4.6's 65.0%, while Claude Opus 4.6 scores 75.0% on Aider Polyglot compared to Claude Sonnet 4.6's 70.0%, while Claude Opus 4.6 scores 70.4% on BFCL compared to Claude Sonnet 4.6's 70.3%.
Math: In math, Claude Opus 4.6 scores 92.0% on MATH compared to Claude Sonnet 4.6's 88.0%, while Claude Opus 4.6 scores 97.0% on GSM8K compared to Claude Sonnet 4.6's 96.0%.
Reasoning: In reasoning, Claude Opus 4.6 scores 91.3% on GPQA Diamond compared to Claude Sonnet 4.6's 74.1%, while Claude Opus 4.6 scores 60.0% on ARC-AGI compared to Claude Sonnet 4.6's 48.0%.
Context: In context, both score 200K on Context Length.
Pricing Comparison
Claude Opus 4.6 costs $5.0/1M input tokens and $25.0/1M output tokens, while Claude Sonnet 4.6 costs $3.0/1M input and $15.0/1M output. Claude Sonnet 4.6 is the more affordable option for API usage.
Speed Comparison
Claude Opus 4.6 generates output at 68 tok/s compared to Claude Sonnet 4.6's 57 tok/s, and the time to first token is 1680 ms for Claude Opus 4.6 versus 790 ms for Claude Sonnet 4.6. Claude Opus 4.6 delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and math and speed, Claude Opus 4.6 has the edge. For those who value affordability, Claude Sonnet 4.6 is the stronger choice.
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Claude Opus 4.6 vs Claude Sonnet 4.6 — FAQ
Which is better, Claude Opus 4.6 or Claude Sonnet 4.6?
Claude Opus 4.6 wins on more benchmarks overall (12 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Opus 4.6 compare to Claude Sonnet 4.6 for coding?
Claude Opus 4.6 is better for coding, scoring 80.8% on SWE-bench Verified compared to 79.6%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Opus 4.6 cheaper than Claude Sonnet 4.6?
Yes, Claude Sonnet 4.6 is cheaper. Claude Opus 4.6 costs $5.0/1M input and $25.0/1M output tokens. Claude Sonnet 4.6 costs $3.0/1M input and $15.0/1M output tokens.
Which is faster, Claude Opus 4.6 or Claude Sonnet 4.6?
Claude Opus 4.6 is faster, generating output at 68 tok/s compared to 57 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Opus 4.6 vs Claude Sonnet 4.6 comparison cover?
This comparison covers 17 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, IFEval, MATH, SWE-bench Verified, GPQA Diamond, Output Speed, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.