+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
GPT-5.1 vs Qwen3.5-397B-A17B
Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. Both models have their strengths depending on your specific coding needs.
+
+
+
+
OpenAI
GPT-5.1, released by OpenAI in November 2025, is a large language model from the GPT-5 family that delivers incremental improvements in reasoning, instruction following, and multimodal understanding over GPT-5. It features a 400K token context window and targets general-purpose development, long-context analysis, and agentic workflows.
+
+
+
+
Alibaba / Qwen
Qwen3.5-397B-A17B is a 397-billion-parameter mixture-of-experts model from Alibaba's Qwen team, released in February 2026 as the open-weight flagship of the Qwen3.5 series, featuring 17 billion active parameters per forward pass through a hybrid linear-attention and sparse-MoE architecture based on Gated Delta Networks. The model was co-trained on text, images, and video using early fusion, making it natively multimodal across a 262K token context window, while achieving significantly higher inference throughput than comparable dense models due to its sparse computation design. At release it was one of the most capable open-weight models publicly available, offered under Apache 2.0 and accessible through Alibaba's DashScope API as the Qwen3.5-Plus endpoint.
3 months newer
GPT-5.1
OpenAI
2025-11
Qwen3.5-397B-A17B
Alibaba / Qwen
2026-02-16
Average performance across 2 common benchmarks
+
+
+
+
GPT-5.1
Average Score:65.8%(+0.4%)
+
+
+
+
Qwen3.5-397B-A17B
Average Score:65.4%
Performance comparison across key benchmark categories
+
+
+
+
GPT-5.1
Coding76.3%
Finance55.3%(+0.8%)
+
+
+
+
Qwen3.5-397B-A17B
Coding76.4%
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
GPT-5.1
0 providers
+
+
+
+
Qwen3.5-397B-A17B
0 providers
+
+
+
+
GPT-5.1
Avg Score:65.8%(+0.4%)
Providers:0
+
+
+
+
Qwen3.5-397B-A17B
Avg Score:65.4%
Providers:0