Moondream / moondream/moondream3.1-9b-a2b
Moondream 3.1 - access through LLMTR
Moondream 3.1 is a small vision-language model from Moondream (9B parameters, 2B active per token) for understanding images: visual question answering, captions, reading text in images (OCR) and visual reasoning. It takes text and image input and returns text, with a 32,000-token context window. Send images as base64 data URLs; https image URLs are not accepted. Reasoning is off by default; turn it on with reasoning: true or the :think suffix for questions that need a closer look. Tool calling, response_format and stop sequences are not supported. Prompts and text reading work best in English and Latin scripts.
Technical specifications
| Canonical ID | moondream/moondream3.1-9b-a2b |
|---|---|
| Provider | Moondream |
| Context window | 32,000 tokens |
| Operations | CHAT_COMPLETIONS |
| Modalities | text, image |
Pricing
An 8% platform margin applies to credit top-ups; model usage prices are not separately marked up.
| Operation | Metric | Unit | Price |
|---|---|---|---|
| CHAT_COMPLETIONS | INPUT_TEXT | PER_1M_TOKENS | $0.300000 |
| CHAT_COMPLETIONS | OUTPUT_TEXT | PER_1M_TOKENS | $2.50 |
Example usage
With existing OpenAI SDK flows, change only the base URL and model identifier.
curl https://llmtr.com/v1/chat/completions -H "Authorization: Bearer llmtr-your_key" -H "Content-Type: application/json" -d '{"model":"moondream/moondream3.1-9b-a2b","messages":[{"role":"user","content":"Hello"}]}'Guides about this model
- Moondream 3.1 API: base64 images, reasoning and pricing - On LLMTR, moondream/moondream3.1-9b-a2b is called with the OpenAI SDK at https://llmtr.com/v1/chat/completions. Images are accepted only as base64 data URLs. The context is 32,000 tokens, and 1M tokens cost $0.30 for input and $2.50 for output. Reasoning is off by default and is turned on with reasoning: true or :think.
- Moondream 3.1 or Moondream 3 Preview? Differences and price - On LLMTR both models are called through /v1/chat/completions with the same API key and the same request format. In the catalog the context (32,000 tokens), the price ($0.30 input / $2.50 output per 1M tokens) and the capabilities are identical; the difference is the release. Moondream 3.1 is the family's newer release, and Moondream 3 Preview is the preview release of Moondream 3.
- Models added to LLMTR in October 2026: facts and guide - Eight of the models LLMTR added in October 2026 in one table: Glimpse, Muse Spark Open, Nemotron 3.5 Super VL (paid and free rows), Moondream 3.1, EmbeddingMagibu 200M, the two decision models on /v1/systemone and Beam 1.0, free until 22 October 2026, 23:59 (Turkey time). All are called at https://llmtr.com/v1 with the same key; the free Qwen3.8 27B row, added earlier, is listed next to them.
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