Moondream · language model
Moondream 3.1: pricing, context and benchmarks
Moondream 3.1 is Moondream's model released on October 15, 2026. It costs $0.3 per million input tokens and $2.5 per million output tokens, with a 32K-token context window. No independent score has been published for it so far.
| Price | 14/30 | |
|---|---|---|
| Context | 1/15 | |
| Features | 7/15 |
What you need to know about Moondream 3.1
Moondream, based in United States, put Moondream 3.1 online on October 15, 2026. It accepts text and images as input and produces text. Its context window reaches 32,000 tokens, larger than 5 % of the models in the registry, and it can write up to 4,096 tokens in one go.
It is a recent model: real-world feedback and independent scores are still scarce.
Moondream 3.1 pricing
On OpenRouter, Moondream 3.1 costs $0.3 per million input tokens and $2.5 per million output tokens. Counting three tokens read for every token written, its average price is $0.85 per million, more expensive than 53 % of paid models (1.1 times the median of $0.76).
A concrete example: a task that sends 2,000 tokens (about 1,500 words) and receives a 500-token answer costs $0.0019. At 1,000 tasks a day, budget $56 a month. The price calculator redoes this with your own volumes.
Performance and benchmarks
Epoch AI does not yet publish a capabilities index for Moondream 3.1. We therefore show no made-up performance rating: only price, context and features count towards its score.
Features, privacy and local use
- It does not support tool calling: it is not suited to driving an AI agent that has to act.
- It is a reasoning model: it "thinks" before answering, which helps on hard tasks but uses more output tokens.
Its weights are open and downloadable from Hugging Face: you can run it on your own machines without sending your data to a third party.
Other Moondream models
| Model | Released | Avg. price | ECI |
|---|---|---|---|
| Moondream 3 Preview | Oct 15, 2026 | $0.85 | — |
Verdict
Computed score: 37/100, from public data (performance, price, context, features).
Strengths
- Open weights: self-hostable, your data stays with you.
Limitations
- No tool calling: unusable as an agent's brain.
- No independent score published: performance cannot be verified.
Avoid if…
- you are building an agent that must call tools;
- you analyse long documents in one go;
- your tasks are mostly simple: a non-reasoning model will cost less.
Alternatives
Comparisons and tools
Learn more
Frequently asked questions
How much does Moondream 3.1 cost?
$0.3 per million input tokens and $2.5 per million output tokens on OpenRouter (checked October 25, 2026). A task with 2,000 tokens read and 500 written costs $0.0019.
How big is Moondream 3.1's context window?
32,000 tokens, roughly 24,000 words, with a maximum of 4,096 output tokens.
Can Moondream 3.1 run locally?
Yes, its weights are published.
Is Moondream 3.1 suitable for an AI agent?
No: without tool calling it cannot act, only answer.
What are the alternatives to Moondream 3.1?
The closest models on price and performance are Nano Banana (Gemini 2.5 Flash Image), GPT-3.5 Turbo, and GLM 4.5V.
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Neutrality. No affiliate links. No vendor pays to be reviewed, rated or ranked. Reviews are directed by François Chollet, neutral and factual, and every data point is dated and sourced. How we score