Claude Sonnet 4.6 vs DeepSeek V3.1
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Sonnet 4.6 by Anthropic wins on 10 of 15 benchmarks against DeepSeek V3.1 by DeepSeek, which leads on 5. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Claude Sonnet 4.6 scores 1395 on Chatbot Arena ELO compared to DeepSeek V3.1's 1340, while Claude Sonnet 4.6 scores 84.0% on MMLU-Pro compared to DeepSeek V3.1's 78.0%.
Coding: In coding, Claude Sonnet 4.6 scores 91.0% on HumanEval+ compared to DeepSeek V3.1's 84.0%, while Claude Sonnet 4.6 scores 79.6% on SWE-bench Verified compared to DeepSeek V3.1's 46.0%, while Claude Sonnet 4.6 scores 65.0% on LiveCodeBench compared to DeepSeek V3.1's 48.0%.
Math: In math, Claude Sonnet 4.6 scores 88.0% on MATH compared to DeepSeek V3.1's 82.0%, while Claude Sonnet 4.6 scores 96.0% on GSM8K compared to DeepSeek V3.1's 92.0%.
Reasoning: In reasoning, Claude Sonnet 4.6 scores 74.1% on GPQA Diamond compared to DeepSeek V3.1's 55.0%, while Claude Sonnet 4.6 scores 48.0% on ARC-AGI compared to DeepSeek V3.1's 35.0%.
Context: In context, Claude Sonnet 4.6 scores 1.0M on Context Length compared to DeepSeek V3.1's 164K.
Pricing Comparison
Claude Sonnet 4.6 costs $3.0/1M input tokens and $15.0/1M output tokens, while DeepSeek V3.1 costs $0.25/1M input and $0.95/1M output. DeepSeek V3.1 is the more affordable option for API usage.
Speed Comparison
Claude Sonnet 4.6 generates output at 57 tok/s compared to DeepSeek V3.1's 65 tok/s, and the time to first token is 790 ms for Claude Sonnet 4.6 versus 450 ms for DeepSeek V3.1. DeepSeek V3.1 delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and math, Claude Sonnet 4.6 has the edge. For those who value affordability and speed, DeepSeek V3.1 is the stronger choice.
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Claude Sonnet 4.6 vs DeepSeek V3.1 — FAQ
Which is better, Claude Sonnet 4.6 or DeepSeek V3.1?
Claude Sonnet 4.6 wins on more benchmarks overall (10 vs 5). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Sonnet 4.6 compare to DeepSeek V3.1 for coding?
Claude Sonnet 4.6 is better for coding, scoring 79.6% on SWE-bench Verified compared to 46.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Sonnet 4.6 cheaper than DeepSeek V3.1?
Yes, DeepSeek V3.1 is cheaper. Claude Sonnet 4.6 costs $3.0/1M input and $15.0/1M output tokens. DeepSeek V3.1 costs $0.25/1M input and $0.95/1M output tokens.
Which is faster, Claude Sonnet 4.6 or DeepSeek V3.1?
DeepSeek V3.1 is faster, generating output at 65 tok/s compared to 57 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Sonnet 4.6 vs DeepSeek V3.1 comparison cover?
This comparison covers 15 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, LiveCodeBench, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.