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Qwen3.5 9B Base

Qwen · Released Feb 26, 2026 · Open weights

Pre-trained Qwen3.5 base checkpoint for fine-tuning and research, without instruction tuning

Context window
262.1K
tokens in · 65.5K out
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BENCHMARKS

Not in the Epoch Capabilities Index. Epoch benchmarks what it can run, so this is a gap in coverage, not a poor result.

Qwen's past year

48 release days in the past year, about one every 8 days. The next is expected around Oct 30, 2026. Forecasts ↗

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Specifications

RELEASE DATEFeb 26, 2026
WEIGHTSOpen weights
CONTEXT WINDOW262.1K
MAX OUTPUT65.5K
REASONINGNot listed
TOOL CALLINGNot listed
INPUTStext, image/bmp, image/jpeg, image/png, image/tiff, image/webp, image/heic, video/mp4, video/x-msvideo, video/x-matroska, video/quicktime, video/x-flv, video/x-ms-wmv
OUTPUTStext

Models.dev record ↗

Specifications and prices from Models.dev; availability and limits may differ by provider. Benchmarks from Epoch AI (CC BY 4.0), LiveBench and the other sources named above.