Qwen 3.5 vs DeepSeek V3.2 — The 2026 Open-Source LLM Showdown
Complete comparison of Qwen 3.5 and DeepSeek V3.2: architecture, benchmarks, hardware requirements, and practical recommendations.
Qwen 3.5 vs DeepSeek V3.2 — The 2026 Open-Source LLM Showdown
Two models dominate the 2026 open-source LLM landscape: Alibaba's Qwen 3.5 (February 2026) and DeepSeek's V3.2 (December 2025). Both are Apache 2.0 licensed, both rival proprietary models, and both support local deployment.
But their architectures, strengths, and ideal use cases are fundamentally different. This post compares them from architecture to benchmarks, hardware requirements, and practical recommendations.
1. Specs at a Glance
| Spec | Qwen 3.5 (397B-A17B) | DeepSeek V3.2 |
|---|---|---|
| Released | February 16, 2026 | December 2025 |
| Total Parameters | 397B | 685B |
| Active Parameters | ~17B | ~37B |
| Architecture | Gated DeltaNet + MoE | MoE + MLA + Sparse Attention |
| Context Length | 262K (up to 1M extended) | 163K |
| Multimodal | Native (text+image+video) | Text only |
| Size Options | 8 (0.8B to 397B) | 3 (V3.2, Exp, Speciale) |
| License | Apache 2.0 | Apache 2.0 |
| Languages | 201 | ~100 |
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