Claude Sonnet 4.5 vs Qwen 3 Coder
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Sonnet 4.5 by Anthropic wins on 9 of 15 benchmarks against Qwen 3 Coder by Qwen, 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 4.5 scores 1380 on Chatbot Arena ELO compared to Qwen 3 Coder's 1290, while Claude Sonnet 4.5 scores 83.0% on MMLU-Pro compared to Qwen 3 Coder's 72.0%.
Coding: In coding, both score 90.0% on HumanEval+, while Claude Sonnet 4.5 scores 77.2% on SWE-bench Verified compared to Qwen 3 Coder's 66.5%, while Claude Sonnet 4.5 scores 62.0% on LiveCodeBench compared to Qwen 3 Coder's 52.0%.
Math: In math, Claude Sonnet 4.5 scores 87.0% on MATH compared to Qwen 3 Coder's 76.0%, while Claude Sonnet 4.5 scores 95.5% on GSM8K compared to Qwen 3 Coder's 90.0%.
Reasoning: In reasoning, Claude Sonnet 4.5 scores 83.4% on GPQA Diamond compared to Qwen 3 Coder's 48.0%, while Claude Sonnet 4.5 scores 45.0% on ARC-AGI compared to Qwen 3 Coder's 28.0%.
Context: In context, Claude Sonnet 4.5 scores 1.0M on Context Length compared to Qwen 3 Coder's 262K.
Pricing Comparison
Claude Sonnet 4.5 costs $3.0/1M input tokens and $15.0/1M output tokens, while Qwen 3 Coder costs $0.30/1M input and $1.0/1M output. Qwen 3 Coder is the more affordable option for API usage.
Speed Comparison
Claude Sonnet 4.5 generates output at 67 tok/s compared to Qwen 3 Coder's 80 tok/s, and the time to first token is 1170 ms for Claude Sonnet 4.5 versus 350 ms for Qwen 3 Coder. Qwen 3 Coder delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and math, Claude Sonnet 4.5 has the edge. For those who value affordability and speed, Qwen 3 Coder is the stronger choice.
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Claude Sonnet 4.5 vs Qwen 3 Coder — FAQ
Which is better, Claude Sonnet 4.5 or Qwen 3 Coder?
Claude Sonnet 4.5 wins on more benchmarks overall (9 vs 5). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Sonnet 4.5 compare to Qwen 3 Coder for coding?
Claude Sonnet 4.5 is better for coding, scoring 77.2% on SWE-bench Verified compared to 66.5%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Sonnet 4.5 cheaper than Qwen 3 Coder?
Yes, Qwen 3 Coder is cheaper. Claude Sonnet 4.5 costs $3.0/1M input and $15.0/1M output tokens. Qwen 3 Coder costs $0.30/1M input and $1.0/1M output tokens.
Which is faster, Claude Sonnet 4.5 or Qwen 3 Coder?
Qwen 3 Coder is faster, generating output at 80 tok/s compared to 67 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Sonnet 4.5 vs Qwen 3 Coder 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.