Active Parameters
122B
Context Length
262.144K
Modality
Multimodal
Architecture
Mixture of Experts (MoE)
License
Apache 2.0
Release Date
24 Feb 2026
Knowledge Cutoff
-
Attention
Attention Structure
Grouped-Query Attention
Attention Heads
32
Key-Value Heads
2
Attention Head Dimension
256
Position Embedding
ROPE
RoPE Theta
10,000,000
Sliding Window Attention
No
Sliding Window Size
-
Normalization
RMS Normalization
Activation Function
SwigLU
Dimensions
Hidden Dimension Size
3,072
Number of Layers
48
FFN Intermediate Size (Dense)
1,024
Multi-Token Prediction Heads
1
Tokenizer
Vocabulary Size
248,320
Mixture of Experts
Total Expert Parameters
10.0B
Number of Experts
256
Active Experts
9
Shared Experts
-
FFN Intermediate Size (per Expert)
1,024
Dense Layers Before MoE
-
Qwen3.5-122B-A10B is Alibaba Cloud's mid-tier multimodal foundation model, released February 2026. With 122B total parameters and 10B activated through a Mixture-of-Experts architecture (256 experts), it balances high performance with computational efficiency. It achieves strong scores on MMLU-Pro (86.1%), GPQA Diamond (85.5%), SWE-bench Verified (72.4%), and Terminal-Bench 2.0 (41.6%). Features unified vision-language capabilities, 262k native context (extensible to 1M), and excels across reasoning, coding, agentic workflows, and multilingual tasks.
Qwen 3.5 is Alibaba Cloud's latest-generation foundation model family, released February 2026. It represents a significant leap forward, integrating breakthroughs in multimodal learning (unified vision-language foundation), efficient hybrid architecture (Gated Delta Networks with sparse Mixture-of-Experts), scalable reinforcement learning across million-agent environments, and global linguistic coverage spanning 201 languages. Available under Apache 2.0 license with open weights.
Rank
#28
| Benchmark | Score | Rank |
|---|---|---|
Web Development WebDev Arena | 1364 | 35 |
Overall Rank
#28
Coding Rank
#46
Total Score
60
/ 100
Qwen3.5-122B-A10B exhibits a bifurcated transparency profile, offering high clarity on its complex hybrid architecture and parameter density while remaining almost entirely opaque regarding its training data and compute resources. While the model is highly accessible through open weights and a permissive license, its internal identity consistency is compromised by traces of other models. Users can rely on detailed community-verified hardware requirements, but must contend with a lack of formal documentation on data provenance and training methodology.
Architectural Provenance
The model's architecture is extensively documented in official Hugging Face and NVIDIA model cards. It utilizes a hybrid 'Gated DeltaNet' (linear attention) and sparse Mixture-of-Experts (MoE) transformer architecture with 48 layers. Specific structural details are provided, including a 3:1 ratio of DeltaNet to standard attention cycles, hidden dimensions of 3072, and a 256-expert MoE setup. While the high-level methodology is clear, a full peer-reviewed technical paper detailing the specific pre-training curriculum or architectural ablation is not yet publicly linked, though a 'coming soon' documentation placeholder exists on GitHub.
Dataset Composition
Information regarding the training data is extremely limited. Official documentation on NVIDIA and Hugging Face lists the training dataset, collection methodology, and labeling as 'Undisclosed'. While the model claims support for 201 languages and multimodal inputs (text, image, video), there is no public breakdown of the data proportions (e.g., web vs. code) or specific sources used for the early-fusion multimodal training.
Tokenizer Integrity
The tokenizer is publicly accessible via the Hugging Face repository and integrated into standard libraries like Transformers and vLLM. It uses Byte Pair Encoding (BPE) with a stated vocabulary size of 248,320 tokens (padded). Documentation confirms support for 201 languages and provides specific token-to-character ratios for English and Chinese. Verification by third-party users in local deployment (llama.cpp) confirms the tokenizer's functional integrity.
Parameter Density
The model provides exemplary transparency regarding its parameter density. It explicitly states a total of 122B parameters with 10B active parameters per token. The MoE structure is detailed as having 256 experts per layer, with 8 routed experts and 1 shared expert activated per token. This prevents the common 'parameter inflation' marketing trap by clearly distinguishing between total and active weights.
Training Compute
There is virtually no public information regarding the compute resources used to train the model. No GPU/TPU hours, hardware cluster specifications, training duration, or carbon footprint data have been disclosed by Alibaba Cloud. The only hardware mentions relate to inference requirements, not training provenance.
Benchmark Reproducibility
The model provides scores for several standard benchmarks (MMLU-Pro, GPQA Diamond, SWE-bench) and some newer ones (Terminal-Bench 2.0). While evaluation results are detailed in the model card, the specific evaluation code and exact prompts used for these internal results are not fully public. However, the model is available for third-party testing on platforms like Artificial Analysis and OpenRouter, allowing for independent verification of performance claims.
Identity Consistency
While the model generally identifies as part of the Qwen family in standard instruction tasks, there are documented instances of identity confusion in its internal reasoning traces. Users have reported the model claiming to be 'Gemini' or an API-based service even when running locally. This suggests significant identity drift likely stemming from the training or distillation process, which undermines its self-identification reliability.
License Clarity
The model is clearly released under the Apache 2.0 license, which is a standard, permissive open-source license. This is explicitly stated across all primary distribution channels (Hugging Face, GitHub, Kaggle, and NVIDIA). The terms for commercial and non-commercial use are well-defined by the license itself, providing high legal clarity for developers.
Hardware Footprint
Hardware requirements are well-documented by both the provider and the community. Official specs recommend 8 GPUs for full context (262k) in BF16, while community documentation provides detailed VRAM breakdowns for various quantization levels (Q4_K_M, NVFP4). For example, a Q4_K_M quant is verified to run on ~73GB-80GB of VRAM. The scaling of memory with context length is also noted, with native support up to 262k tokens.
Versioning Drift
The model uses a clear naming convention (Qwen3.5-122B-A10B), but there is a lack of a formal, public changelog or version history for weight updates. While the release date is clear, there is no established mechanism for tracking silent updates or performance drift over time. The 'coming soon' status of official documentation further limits the transparency of its versioning lifecycle.
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