These pages track pre-release signals, not confirmed launch data. Provider announcements and official model cards are stronger evidence than mentions in research papers, and pricing, benchmarks, and availability remain unconfirmed until release.

Pre-release Signal

Qwen3.5-4B

Language Model by Alibaba - Research mention via arxiv

This page stays evidence-first until LM Market Cap can verify real availability, pricing, and benchmark coverage.

Source Evidence

The method, which we call S0 tuning, optimizes one state matrix per recurrent layer while freezing all model weights. On Qwen3.5-4B (GatedDeltaNet hybrid), S0 tuning improves greedy pass@1 by +23.6 +/- 1.7 pp (10 seeds).

Provider

Alibaba

Evidence type

Research mention

Detected Signals

release_signalarxiv_paper

Resources

Primary source →Paper →

Verification Status

This page tracks a pre-release signal for Qwen3.5-4B. Once availability is confirmed, it will appear on our LLM Leaderboard with full scoring, benchmarks, and pricing. Until then, release date, pricing, and benchmark claims remain unconfirmed unless they are directly cited above. Check our New AI Models page for the latest releases and the source links above for the current evidence.

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Frequently Asked Questions

Qwen3.5-4B was first detected on April 2, 2026 via arxiv. That is a detection signal, not a confirmed launch date, so we keep tracking the source evidence until official availability is verified.

Not yet. The current evidence comes from repository, research, or other detection signals rather than a confirmed provider launch post. Treat this page as a watch page until an official announcement appears.

You can verify the source links, the detection dates, and the evidence type shown on this page. We do not treat release date, pricing, or benchmark availability as confirmed unless those details are cited directly in the source evidence above.