Qwen3.5-4B vs moondream3.1-9B-A2B
Specs, VRAM requirements and download trends — updated 24 October 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | Qwen3.5-4B | moondream3.1-9B-A2B |
|---|---|---|
| Deployment | Open weights | Open weights · also via API |
| Parameters | 4.7 B | 9.3 B |
| Architecture | Qwen3_5ForConditionalGeneration | — |
| Context length | — | 32,000 |
| Licence | apache-2.0 | other |
| Commercial use | Allowed | Unknown |
| Languages | — | — |
| Downloads 30d | 7,468,587 | 9,557 |
| Downloads all time | 54.2 M | 46 K |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2026-02-27 | 2026-06-30 |
| API input price / 1M tokens | not on OpenRouter | $0.30 |
| API output price / 1M tokens | not on OpenRouter | $2.50 |
| Est. cost per 1M input + 1M output tokens | not on OpenRouter | $2.80 |
| Cached input / 1M tokens | not on OpenRouter | — |
| AA Intelligence Index | not on OpenRouter | — |
| AA Coding Index | not on OpenRouter | — |
| AA Agentic Index | not on OpenRouter | — |
| Max output tokens | not on OpenRouter | 4,096 |
| API providers | not on OpenRouter | 1 |
| Tool calling | not on OpenRouter | No |
| Reasoning mode | not on OpenRouter | Yes |
API cost
Estimated cost of 1M input + 1M output tokens via OpenRouter
moondream3.1-9B-A2B
$2.80
Download trend
Daily snapshots, last 89 days (28 Jul – 24 Oct)
8.1 M10 K
Qwen3.5-4B
moondream3.1-9B-A2B
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
Qwen3.5-4B · fp16
11.5 GB / 24 GB
moondream3.1-9B-A2B · fp16
13.4 GB / 24 GB