Compare · ModelsLive · 2 picked · head to head
Llama 3.1 405B vs Claude Sonnet 4
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Sonnet 4 wins on 7/7 benchmarks
Claude Sonnet 4 wins 7 of 7 shared benchmarks. Leads in coding · knowledge · math.
Category leads
coding·Claude Sonnet 4knowledge·Claude Sonnet 4math·Claude Sonnet 4reasoning·Claude Sonnet 4agentic·Claude Sonnet 4
Hype vs Reality
Attention vs performance
Llama 3.1 405B
#151 by perf·no signal
Claude Sonnet 4
#115 by perf·no signal
Vendor risk
Who is behind the model
Meta AI
$1.50T·Tier 1
Anthropic
$380.0B·Tier 1
Head to head
7 benchmarks · 2 models
Llama 3.1 405BClaude Sonnet 4
Cybench
Claude Sonnet 4 leads by +27.5
Cybench · evaluates AI on real Capture-The-Flag cybersecurity challenges, testing vulnerability analysis, exploitation, and security reasoning.
Llama 3.1 405B
7.5
Claude Sonnet 4
35.0
GPQA diamond
Claude Sonnet 4 leads by +37.7
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Llama 3.1 405B
34.5
Claude Sonnet 4
72.3
MATH level 5
Claude Sonnet 4 leads by +34.6
MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics.
Llama 3.1 405B
49.8
Claude Sonnet 4
84.4
OTIS Mock AIME 2024-2025
Claude Sonnet 4 leads by +61.4
OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Llama 3.1 405B
9.6
Claude Sonnet 4
71.1
SimpleBench
Claude Sonnet 4 leads by +27.0
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
Llama 3.1 405B
7.6
Claude Sonnet 4
34.6
The Agent Company
Claude Sonnet 4 leads by +25.7
The Agent Company · tests AI agents on realistic corporate tasks like email management, code review, data analysis, and cross-tool workflows.
Llama 3.1 405B
7.4
Claude Sonnet 4
33.1
WeirdML
Claude Sonnet 4 leads by +24.7
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
Llama 3.1 405B
21.4
Claude Sonnet 4
46.1
Full benchmark table
| Benchmark | Llama 3.1 405B | Claude Sonnet 4 |
|---|---|---|
Cybench Cybench · evaluates AI on real Capture-The-Flag cybersecurity challenges, testing vulnerability analysis, exploitation, and security reasoning. | 7.5 | 35.0 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 34.5 | 72.3 |
MATH level 5 MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics. | 49.8 | 84.4 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 9.6 | 71.1 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 7.6 | 34.6 |
The Agent Company The Agent Company · tests AI agents on realistic corporate tasks like email management, code review, data analysis, and cross-tool workflows. | 7.4 | 33.1 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 21.4 | 46.1 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| Llama 3.1 405B | — | — | — | — |
| Claude Sonnet 4 | $3.00 | $15.00 | 1.0M tokens (~500 books) | $60.00 |