Llama 4 Scout vs GPT-5.1
A side-by-side comparison of two multimodal models — real specs, pricing, strengths and weaknesses, and a clear verdict on which to choose. Kept current by our agents.
Quick verdict: which should you choose?
Choose Llama 4 Scout if you need
- ✓Extremely large 10M token context for long text and image sequences
- ✓Lowest output price at $0.3 per million tokens
- ✓Open-weight model from Meta with native multimodal input
- ✓Strong reasoning over very long inputs at 112.66 t/s
Choose GPT-5.1 if you need
- ✓Highest intelligence index of 20.4 for complex multimodal tasks
- ✓Native support for images, text, and files in one model
- ✓Proprietary OpenAI model with strong multimodal integration
- ✓Very large 400K context at 112.2 t/s output speed
Verdict
Llama 4 Scout leads on context window size (10M vs 400K) and price ($0.3/M vs $10/M) while matching GPT-5.1's output speed almost exactly. GPT-5.1 leads on intelligence index (20.4 vs 10) and adds file support beyond text and images. Llama 4 Scout's open-weight nature contrasts with GPT-5.1's proprietary access.
Llama 4 Scout vs GPT-5.1: side by side
| Spec | Llama 4 Scout | GPT-5.1 | Winner |
|---|---|---|---|
| Intelligence | 10 | 20.4 | GPT-5.1 |
| Output speed | 111 t/s | 95 t/s | Llama 4 Scout |
| Output price | $0.30/1M | $10.00/1M | Llama 4 Scout |
| Context | 10000K | 400K | Llama 4 Scout |
| Params | — | — | Tie |
| Provider | Meta | OpenAI | Tie |
Detailed analysis
Intelligence
Winner: GPT-5.1GPT-5.1 scores 20.4 on the intelligence index compared to Llama 4 Scout's 10. This gap indicates stronger performance on complex reasoning tasks according to the provided metrics.
Pricing
Winner: Llama 4 ScoutLlama 4 Scout costs $0.3 per million output tokens while GPT-5.1 costs $10 per million. The tenfold price difference favors Llama 4 Scout for high-volume usage.
Context Window
Winner: Llama 4 ScoutLlama 4 Scout offers a 10,000,000 token context versus GPT-5.1's 400,000 tokens. This makes Llama 4 Scout suitable for much longer sequences of text and images.
Speed & Modalities
Winner: TieOutput speeds are nearly identical at 112.66 t/s and 112.2 t/s. Llama 4 Scout supports text and images while GPT-5.1 adds file support but neither includes audio or video.
Llama 4 Scout
Pros
- +Extremely large context window
- +Native multimodal input support
- +Strong reasoning over long inputs
Cons
- –High compute cost at maximum context
- –Limited to text and image modalities only
- –May exhibit latency on very long sequences
GPT-5.1
Pros
- +Very large context window
- +Native support for images, text, and files
- +Strong multimodal integration
Cons
- –No audio or video modalities
- –Performance details unverified beyond specs
- –Potential latency with maximum context
Summary: Llama 4 Scout vs GPT-5.1
Choose Llama 4 Scout for maximum context length, lowest cost, and open weights. Choose GPT-5.1 when higher intelligence scores and file handling are priorities. Both models have similar speeds and share the same core multimodal limitations.
Frequently asked questions
GPT-5.1 scores higher on intelligence while Llama 4 Scout wins on context size and price; the better choice depends on whether intelligence or scale and cost matter most.