Llama 3.1 405B Instruct vs Qwen3.5-397B-A17B Comparison
Comparing Llama 3.1 405B Instruct and Qwen3.5-397B-A17B across benchmarks, pricing, and capabilities.
Performance Benchmarks
Comparative analysis across standard metrics
Llama 3.1 405B Instruct outperforms in 0 benchmarks, while Qwen3.5-397B-A17B is better at 3 benchmarks (GPQA, IFEval, MMLU-Pro).
Qwen3.5-397B-A17B significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Pricing Analysis
Price comparison per million tokens
For input processing, Llama 3.1 405B Instruct ($0.89/1M tokens) is 1.5x more expensive than Qwen3.5-397B-A17B ($0.60/1M tokens).
For output processing, Llama 3.1 405B Instruct ($0.89/1M tokens) is 4.0x cheaper than Qwen3.5-397B-A17B ($3.60/1M tokens).
In conclusion, Qwen3.5-397B-A17B is more expensive than Llama 3.1 405B Instruct.*
* Using a 3:1 ratio of input to output tokens
Model Size
Parameter count comparison
Llama 3.1 405B Instruct has 8.0B more parameters than Qwen3.5-397B-A17B, making it 2.0% larger.
Context Window
Maximum input and output token capacity
Qwen3.5-397B-A17B accepts 262,144 input tokens compared to Llama 3.1 405B Instruct's 128,000 tokens. Llama 3.1 405B Instruct can generate longer responses up to 128,000 tokens, while Qwen3.5-397B-A17B is limited to 64,000 tokens.
Input Capabilities
Supported data types and modalities
Qwen3.5-397B-A17B supports multimodal inputs, whereas Llama 3.1 405B Instruct does not.
Qwen3.5-397B-A17B can handle both text and other forms of data like images, making it suitable for multimodal applications.
Llama 3.1 405B Instruct
Qwen3.5-397B-A17B
License
Usage and distribution terms
Llama 3.1 405B Instruct is licensed under Llama 3.1 Community License, while Qwen3.5-397B-A17B uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Llama 3.1 Community License
Open weights
Apache 2.0
Open weights
Release Timeline
When each model was launched
Llama 3.1 405B Instruct was released on 2024-07-23, while Qwen3.5-397B-A17B was released on 2026-02-16.
Qwen3.5-397B-A17B is 19 months newer than Llama 3.1 405B Instruct.
Jul 23, 2024
1.6 years ago
Feb 16, 2026
3 weeks ago
1.6yr newerKnowledge Cutoff
When training data ends
Neither model specifies a knowledge cutoff date.
Unable to compare the recency of their training data.
Provider Availability
Llama 3.1 405B Instruct is available from Lambda, DeepInfra, Fireworks, Bedrock, Together, Hyperbolic, Google, Replicate. Qwen3.5-397B-A17B is available from Novita. The availability of providers can affect quality of the model and reliability.
Llama 3.1 405B Instruct
Qwen3.5-397B-A17B
Outputs Comparison
Key Takeaways
Qwen3.5-397B-A17B
View detailsAlibaba Cloud / Qwen Team
Detailed Comparison
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