Llama 4 405B review: specs, pricing, and how it compares (2026)
A practical look at Llama 4 405B from Meta: benchmarks, pricing, real strengths, and how it stacks up against other AI models inside Admix, the multi model AI chat aggregator.
Quick verdict
Llama 4 405B is a strong mid-tier model. It is best for reasoning, creative writing, research. Benchmarks via artificialanalysis.ai.
Specs
| Intelligence index | 71.5 |
| Coding index | 69.0 |
| Context window | 256K tokens |
| Speed | 95 tok/s |
| Input price | $0.90 / 1M tokens |
| Output price | $2.70 / 1M tokens |
| Vendor | Meta |
| Released | Nov 5, 2025 |
Watch: Llama 4 405B review
Strengths
- Best fully open-weights model
- Self-hostable for compliance
- Strong general knowledge
- Active fine-tuning ecosystem
Weaknesses
- Trails closed flagships on coding
- High GPU requirements to self-host
Best use cases for Llama 4 405B
Llama 4 405B versus other models
FAQ
Is Llama 4 405B good for Reasoning?
Yes. Llama 4 405B ranks well on this task in 2026 thanks to best fully open-weights model. See the use case rankings on Admix for the full comparison against other models.
How much does Llama 4 405B cost?
Llama 4 405B costs $0.90 per million input tokens and $2.70 per million output tokens. In Admix you can use it inside one subscription alongside every other frontier model.
What is the context window of Llama 4 405B?
Llama 4 405B supports a context window of 256K tokens, released Nov 5, 2025.
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