Llama 3.1-405B vs Claude Opus 5
Both have similar output pricing, while Claude Opus 5 offers a larger context window. Choose Llama 3.1-405B or Claude Opus 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Llama 3.1-405B | Claude Opus 5 |
|---|---|---|
| Provider | Meta AI | Abacus |
| Input / 1M tokens | — | $5.00 |
| Output / 1M tokens | — | $25.00 |
| Context window | — | 1M |
| Parameters | 405B | — |
| Open weights | Yes | No |
| Released | Jul 2024 | Jul 2026 |
FAQ
Is Llama 3.1-405B or Claude Opus 5 cheaper?
Llama 3.1-405B and Claude Opus 5 have comparable output pricing.
Which has the larger context window, Llama 3.1-405B or Claude Opus 5?
Claude Opus 5 has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.