Claude Sonnet 4 5 20250929vsLlama 3.1 405b Instruct Bf16
Claude Sonnet 4 5 20250929 leads the overall Podium Score by 6.0 points (73.0 vs 67.0).Category wins: Claude Sonnet 4 5 20250929 0 — 0 Llama 3.1 405b Instruct Bf16.Llama 3.1 405b Instruct Bf16 is the cheaper pick ($0/M vs $15/M per 1M output tokens). Claude Sonnet 4 5 20250929 is faster (50 t/s vs 50 t/s).
Key VerdictAggregated 2026 Benchmark Analysis
Claude Sonnet 4 5 20250929 is rated higher overall with a Podium Score of 73.0 (vs 67.0 for Llama 3.1 405b Instruct Bf16). Both models show closely matched capabilities across domain benchmarks.
Coding & Engineering
Comparable
Inference Speed
Claude Sonnet 4 5 20250929 (50 t/s)
Cost Efficiency
Llama 3.1 405b Instruct Bf16 ($0/M/M)
| Metric | Claude Sonnet 4 5 20250929 | Llama 3.1 405b Instruct Bf16 |
|---|---|---|
| Podium Score | 73.0 ▲ | 67.0 |
| Arena Elo | — | — |
| Intelligence Index | — | — |
| Coding | — | — |
| Math | — | — |
| Reasoning | — | — |
| Agentic | — | — |
| Knowledge | — | — |
| Multimodal | — | — |
| Long-context | — | — |
| Output speed | 50 t/s | 50 t/s |
| Output price | $15/M | $0/M ▲ |
| Context window | 128K | 128K |
Scores aggregated from five independent leaderboards. See Methodology. More head-to-heads: Claude Sonnet 4 5 vs Claude Mythos · Claude Sonnet 4 5 vs Claude Fable 5 · Claude Sonnet 4 5 vs Kimi K3 · Claude Sonnet 4 5 vs Claude Opus 5