Llama 4 Scout
Meta | 1,310,720 token context | $0.18/M input, $0.59/M output. Llama 4 Scout 17B Instruct (16E) is a mixture-of-experts (MoE) language model developed by Meta, activating 17 billion parameters out of a total of 109B. It supports native multimodal input (text and image) and multilingual output (text and code) across 12 supported languages. Designed for assistant-style interaction and visual reasoning, Scout uses 16 experts per forward pass and features a context length of 10 million tokens, with a training corpus of ~40 trillion tokens. Built for high efficiency and local or commercial…Meta | 1,310,720 token context | $0.18/M input, $0.59/M output. Llama 4 Scout 17B Instruct (16E) is a mixture-of-experts (MoE) language model developed by Meta, activating 17 billion parameters out of a total of 109B. It supports native multimodal input (text and image) and multilingual output (text and code) across 12 supported languages. Designed for assistant-style interaction and visual reasoning, Scout uses 16 experts per forward pass and features a context length of 10 million tokens, with a training corpus of ~40 trillion tokens. Built for high efficiency and local or commercial deployment, Llama 4 Scout incorporates early fusion for seamless modality integration. It is instruction-tuned for use in multilingual chat, captioning, and image understanding tasks. Released under the Llama 4 Community License, it was last trained on data up to August 2024 and launched publicly on April 5, 2025.


Captain's notes
Known for
- 10-million-token context window, the longest available in open weights
- Native image and text input via early fusion, no bolt-on vision adapter
- MoE architecture keeps active parameters at 17B, reducing inference cost
- Multilingual across 12 languages, covering chat, captioning and code
- Open weights under the Llama 4 Community License, local deployment allowed
Watch out for
- The Llama 4 Community License is not fully permissive; check usage limits before commercial deployment.
- 109B total parameters means local inference demands serious hardware despite the 17B active count.
- Training data cuts off August 2024; anything after that is outside what it knows.
Prompts to try
Compare with
- Llama 3.2 3B InstructOpen-weights model131,072 token context · $0.05/M input, $0.33/M output
- Llama 3.1 70B InstructOpen-weights model131,072 token context · $0.40/M input, $0.40/M output
- Llama Guard 4 12BOpen-weights model163,840 token context · $0.18/M input, $0.18/M output
- Llama 4 Scout 17B 16E InstructOpen-weights model327,680 token context · $0.10/M input, $0.30/M output
Questions people ask
- Can I run Llama 4 Scout locally?
- Yes, the weights are open and available on Hugging Face under the Llama 4 Community License. Bear in mind the full model is 109B parameters, so you will need substantial hardware; quantised versions ease that requirement considerably.
- What does Llama 4 Scout cost via API, and how long is its context?
- Pricing is $0.18 per million input tokens and $0.59 per million output tokens. The supported context window is 1,310,720 tokens via API, while the underlying model was trained to handle up to 10 million tokens.
- How does Scout differ from Llama 4 Maverick?
- Both are Llama 4 MoE models, but Scout activates 17B parameters with 16 experts and is positioned as the leaner, more deployment-friendly option; Maverick is the larger sibling aimed at higher-capability tasks.
Captain's verdictA rare combination of open weights, genuine vision capability and an absurd context window at a price that makes frontier closed models look overpriced.
Glossary: the terms used here
- Heat score
- One number for how much a model is used and wanted right now, from 0° to 9,999°. Every list on this site that says hottest is sorted by it and nothing else.
- Floor
- The 7,000° every model with real data starts from. The scale runs from 0° to 9,999°; the part below the floor is reserved for stand-ins (models without data), so that a model with data always ranks above one without. The floor is the same for everyone and decides nothing; the degrees above it are the measurement.
- Download-equivalents
- Everything the score treats as a download, added up: downloads themselves, each torrent seeder as 1,000, each AI Horde image and each run on a generation site as one.
- Log scale
- Counting by tens, not by ones: going from 1,000 to 10,000 downloads adds the same degrees as going from 10,000 to 100,000. It keeps giants from crowding out everything else.
- Likes
- Thumbs up and likes from every source, worth half a download each on the log scale.
- Adoption rate
- How many downloads a day a model gets right now, from the difference between two readings of a source. A quarter of the weight of the download term.
- Measured and estimated
- Measured means two readings of a source exist and the difference is real. Estimated means only today's total is known and the past is spread over the model's life; the site says which one it is showing.
- Seeder
- Someone who keeps a copy of the weights online for others to download over a torrent, or a hosted mirror doing the same. Each one counts as 1,000 downloads.
- AI Horde
- A volunteer network that generates images for free on donated computers. The number of images it has made with a model is public, and each counts as one download.
- Generation sites
- Sites that host their own copies of a model and let people generate with it, such as PixAI, SeaArt and Yodayo. Their downloads count like Civitai's and each generation run as one download.
- OpenRouter tokens
- A text model served through an API, such as Claude or GPT, has no weights to download, so its usage is measured in tokens: the pieces of text it read and wrote through OpenRouter, a gateway many apps use, over the last 30 days. Every 10,000,000 tokens count as one download. Source: OpenRouter (openrouter.ai/rankings), CC BY 4.0.
- Full model (checkpoint)
- The weights themselves, the file that generates on its own. It gets a bonus because add-ons depend on it.
- LoRA and embedding
- Small add-on files that steer someone else's weights toward a style, a character or a concept. They cannot run alone.
- Family and weights
- The base a model is built on, such as SD 1.5, SDXL, Flux or Wan. Every model inherits the release date of its family's weights.
- Age
- Degrees taken off for how long ago the family's weights came out: 150° a year, up to 750°. It keeps old downloads that had years to pile up from freezing the top of the list.
- Family boost
- A small, bounded nudge for LoRAs of a family this site is pushing forward right now, always listed in the breakdown.
- Stand-in score
- A stable number below the floor given to a model no source reports on yet, so lists stay complete. It never ranks above a model with data.
- New! (grace period)
- A model less than 7 days old shows New! instead of a score and holds no place in the rankings. Its score is computed from day one, but a model one day old grows faster than anything, so without the wait the week's #1 would always be whatever came out yesterday rather than what held up for a week.
- Trend
- How a model's growth over a period compares with the typical model's growth over the same period. Faster than typical reads as a rise, slower as a fall.
- Typical model
- The middle of the catalog: half the models with a figure grew faster over the period, half slower.
