Claude Sonnet 4.5 vs Llama 4 Scout
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Sonnet 4.5 by Anthropic wins on 12 of 17 benchmarks against Llama 4 Scout by Meta, 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 Llama 4 Scout's 1240, while Claude Sonnet 4.5 scores 83.0% on MMLU-Pro compared to Llama 4 Scout's 74.3%, while Claude Sonnet 4.5 scores 21.2 on AA Intelligence Index compared to Llama 4 Scout's 6.5.
Coding: In coding, Claude Sonnet 4.5 scores 90.0% on HumanEval+ compared to Llama 4 Scout's 75.0%, while Claude Sonnet 4.5 scores 77.2% on SWE-bench Verified compared to Llama 4 Scout's 28.0%, while Claude Sonnet 4.5 scores 62.0% on LiveCodeBench compared to Llama 4 Scout's 32.0%, while Claude Sonnet 4.5 scores 52.1 on AA Coding Index compared to Llama 4 Scout's 8.2.
Math: In math, Claude Sonnet 4.5 scores 87.0% on MATH compared to Llama 4 Scout's 68.0%, while Claude Sonnet 4.5 scores 95.5% on GSM8K compared to Llama 4 Scout's 86.0%.
Reasoning: In reasoning, Claude Sonnet 4.5 scores 83.4% on GPQA Diamond compared to Llama 4 Scout's 38.0%, while Claude Sonnet 4.5 scores 45.0% on ARC-AGI compared to Llama 4 Scout's 16.0%, while Claude Sonnet 4.5 scores 17.5 on AA Agentic Index compared to Llama 4 Scout's 0.5.
Context: In context, Llama 4 Scout scores 1.3M on Context Length compared to Claude Sonnet 4.5's 1.0M.
Pricing Comparison
Claude Sonnet 4.5 costs $3.0/1M input tokens and $15.0/1M output tokens, while Llama 4 Scout costs $0.10/1M input and $0.30/1M output. Llama 4 Scout is the more affordable option for API usage.
Speed Comparison
Claude Sonnet 4.5 generates output at 67 tok/s compared to Llama 4 Scout's 140 tok/s, and the time to first token is 1170 ms for Claude Sonnet 4.5 versus 330 ms for Llama 4 Scout. Llama 4 Scout 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, Llama 4 Scout is the stronger choice.
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Claude Sonnet 4.5 vs Llama 4 Scout — FAQ
Which is better, Claude Sonnet 4.5 or Llama 4 Scout?
Claude Sonnet 4.5 wins on more benchmarks overall (12 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 Llama 4 Scout for coding?
Claude Sonnet 4.5 is better for coding, scoring 77.2% on SWE-bench Verified compared to 28.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Sonnet 4.5 cheaper than Llama 4 Scout?
Yes, Llama 4 Scout is cheaper. Claude Sonnet 4.5 costs $3.0/1M input and $15.0/1M output tokens. Llama 4 Scout costs $0.10/1M input and $0.30/1M output tokens.
Which is faster, Claude Sonnet 4.5 or Llama 4 Scout?
Llama 4 Scout is faster, generating output at 140 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 Llama 4 Scout comparison cover?
This comparison covers 17 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.