Llama 4 405B — AI Model Review & Pricing
Meta's largest open-weight model. Closing the gap with proprietary frontier models, especially on coding and reasoning.
Specifications
| Attribute | Value |
|---|---|
| Lab | Meta |
| Tags | Intelligent Open Weight |
| Release Date | 2026-01 |
| Context Window | 131,072 tokens |
| Input Price / 1M | $0.00 |
| Output Price / 1M | $0.00 |
| Input Modalities | Text |
| Output Modalities | Text |
Strengths
- Strong open-weight performance
- Good coding & reasoning
- Large community & tooling
- Permissive license
Weaknesses
- Requires significant hardware
- Slightly behind top proprietary models
- Smaller ecosystem than Llama 3 had
Best For
- Self-hosted AI infrastructure
- Research
- Fine-tuning specialized models
- Privacy-sensitive deployments
In Depth: Llama 4 405B
Summary
Llama 4 405B is an AI model from Meta ranked #30 of 124 on the LMRank leaderboard.
Released 2026-01. It currently appears in the Overall category on LMRank. It supports Text input and produces Text output, with a context window of 131,072 tokens. Input pricing is $0.00 per 1M tokens and output is $0.00 per 1M tokens on OpenRouter.