Moondream 3.1 is a vision-language model from Moondream, the successor to Moondream 3 Preview, with 9B total parameters and 2B active (mixture-of-experts). It handles visual question answering, captioning, OCR, and...
Specs
moondream/moondream3-previewHow to use Moondream: Moondream 3 Preview in your app
The quickest way is through an API gateway such as OpenRouter, which uses the same format as the OpenAI API. Create a key, then send a request with the model ID moondream/moondream3-preview:
Prefer no code? Many tools in our AI tools directory run on models like this one.
More models from Moondream
Questions about Moondream: Moondream 3 Preview
What is Moondream: Moondream 3 Preview?
Moondream 3 Preview is a vision-language model from Moondream with 9B total parameters and 2B active (mixture-of-experts). It handles visual question answering, captioning, OCR, and visual reasoning over images, with...
How big is the context window of Moondream: Moondream 3 Preview?
Moondream: Moondream 3 Preview can read up to 32,000 tokens in one request, roughly 24,000 words.
Is Moondream: Moondream 3 Preview open source?
Moondream: Moondream 3 Preview has open weights, so you can download and run it yourself, subject to its licence.
What can Moondream: Moondream 3 Preview take as input?
Moondream: Moondream 3 Preview accepts text, image and produces text.
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Specs and prices come from OpenRouter and the provider, and are refreshed daily. Last checked 15 Oct 2026.