Model comparison
GPT-5.4 vs Llama 4 Scout
OpenAI
GPT-5.4
OpenAI's flagship - broadest modality and ecosystem coverage.
Meta
Llama 4 Scout
Open-weights frontier with a headline 10M-token context.
Specs
| Metric | GPT-5.4 | Llama 4 Scout |
|---|---|---|
| Context window | 1.1M tokens | 10M tokens↑ |
| Input $/1M tokens | $2.50 | $0.080↑ |
| Output $/1M tokens | $15.00 | $0.300↑ |
| Modalities | Text · Image · File | Text · Image |
| Open weights | No | Yes |
| Released | Mar 2026 | Apr 2025 |
Capability differences
| Capability | GPT-5.4 | Llama 4 Scout |
|---|---|---|
| Extended thinking | Yes | No |
| Prompt caching | Yes | No |
| Open weights | No | Yes |
Key differences
- -GPT-5.4 offers 1.1M context; Llama 4 Scout offers 10M.
- -Input pricing: GPT-5.4 at $2.50/1M vs Llama 4 Scout at $0.080/1M.
- -Llama 4 Scout is open weights; GPT-5.4 is proprietary.