Qwen3.5 4B is a low-cost multimodal reasoning model with 256K context, image and video input, function tools, and structured output.
Specification
most-agreed values
Context
262K
Max output
33K
Released
2026-03-02
Knowledge cutoff
2025-04
Retires
—
Open weights
yes
Input
text, image, video
Output
text
Price
US dollars per million tokens · most-agreed
Input
$0.04
Output
$0.07
Cache read
$0.02
Quality
1 benchmark · 1 source
Composite
56th
percentile of 344 scored models
Rank
153 / 344
±0.13 sd
Evidence
1 × 1
too little evidence to place with confidence
Effort range
—
one configuration only
math56th1/7 bench
Every score
one row per source and configuration — nothing averaged away
| Benchmark | Score | Configuration | Source | Run |
|---|---|---|---|---|
| OTIS Mock AIME 2024-2025 | 55.8 ±6.2 | default | Epoch AI | 2026-08-28 |
The leading figure for a benchmark is the median across its configurations, so one heroic high-effort run cannot set the number.
Available from 5 hosts
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| qvac | free | free | — | — | 33K | 8K | — |
| siliconflow-cn | free | free | — | — | 262K | 66K | — |
| empiriolabs | $0.04 | $0.07 | $0.02 | — | 262K | 33K | — |
| merge-gateway | $0.04 | $0.07 | — | — | 262K | 33K | — |
| thinkingmachines | $0.33 | $1.005 | $0.066 | — | 66K | 66K | — |
Other listings of this model
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