AI HISTORY

Qwen3.5 Release

Alibaba released Qwen3.5 on February 16, 2026, beginning with the open-sourcing of Qwen3.5-397B-A17B, also named Qwen3.5-Plus, a natively multimodal foundation model.

16 February 2026AI HISTORYVERIFIED

Historical classification

This verified record belongs to LINEAiGE's artificial-intelligence history layer beginning in 1956.

Why it matters

A dated Qwen model-series release milestone documented by Alibaba.

People, organizations & technologies

ORGANIZATIONS
Alibaba, Qwen

TECHNOLOGIES
Qwen3.5, Qwen3.5-397B-A17B, Qwen3.5-Plus

Evidence & verification

STATE
verified

CONFIDENCE
high

LAST VERIFIED
2026-10-08T03:10:00+08:00

Release date and initial open-sourced model are documented in Alibaba's first-party February 16, 2026 announcement. No geography, causal ancestry, influence, priority, or downstream relationship is inferred.

Sources

SOURCE 1 · PRIMARY · CLAIM-EVIDENCE

Alibaba Open-Sources Qwen3.5, A Natively Multimodal Model Built For High-Efficiency Inference

Alibaba Group

PUBLISHED
2026-02-16

OPEN SOURCE

Trace the chronology

← Claude Opus 4.6 Release Claude Sonnet 4.6 Release →

Record identity

LINEAiGE ID
qwen3-5-2026