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Moondream: Moondream 3 Preview

Source description (English)

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...

View source on OpenRouter Hugging Face
Overview

Model specifications

Context
32,000 tokens
Maximum output
4,096 tokens
Architecture
text+image->text
Tokenizer
Other
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$0.3
per 1M tokens
Output
$2.5
per 1M tokens
API

Model configuration

Default parameters

temperature
0.2
top_p
0.9

Reasoning

Reasoning required
No
Default parameters
No
API

Quick start

Set OPENROUTER_API_KEY locally. Python requires requests; JavaScript runs in Node.js. Keep the key on the server.

API documentation

curl --fail-with-body https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"moondream/moondream3-preview","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

Input → Output

Input
textimage
Output
text
Reasoning

No

API

Supported API parameters

include_reasoningmax_completion_tokensmax_tokensreasoningtemperaturetop_p
Available providers

1 Provider

Checked: October 16, 2026

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

PrimeIntellect

fp8
Context
32K
Maximum output
4K
Input
$0.3
Output
$2.5
Cache read
Not provided
Cache write
Not provided
moondream

1 models

All models
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Moondream: Moondream 3.1

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...

Context
32K
Input
text · image
Output
text
Input: $0.3Output: $2.5per 1M tokens
View model details →