Model comparison · text
Qwen3.5-397B-A17B vs Llama-3.1-405B
Symmetrical, primary-source facts with unknown values left visible. No winner is assigned without comparable measurements.
FieldAt a glance
Qwen · activeQwen3.5-397B-A17BVerified Aug 28, 2026
Meta · activeLlama-3.1-405BVerified Aug 28, 2026
Technical differences
Side-by-side facts
| Field | Qwen3.5-397B-A17B | Llama-3.1-405B |
|---|---|---|
| Developer | Qwen | Meta |
| Family | Qwen3 5 397b A17b | Llama 3 1 405b |
| Model | Qwen3.5-397B-A17B | Llama-3.1-405B |
| Version | Qwen3.5-397B-A17B | Llama-3.1-405B |
| Lifecycle | active | active |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |
| Context window | 262144 | 131072 |
| Total parameters | 403397928944 | 405853388800 |
| Active parameters | 17000000000 | Unknown |
| License | apache-2.0 | llama3.1 |
| Open weights | Yes | Yes |
| API available | Yes | Unknown |
| Self-hostable | Yes | Yes |
| Capabilities | chat, generation, reasoning, tools | generation |
13 comparable fields · 9 material differences · Pair passes the primary-source comparison gate
Primary benchmark evidence
Comparable performance
No protocol-matched benchmark yet.Results appear here only when both models share the same benchmark version, metric, evaluation protocol, and evidence class.
Qwen3.5-397B-A17B capabilities
Input price$0.39
Output price$2.34
Serving providers1
Canonical IDQwen/Qwen3.5-397B-A17B
Llama-3.1-405B capabilities
Input price—
Output price—
Serving providers0
Canonical IDmeta-llama/Llama-3.1-405B
Internal comparison graph
Related comparisons
Primary evidence