Which is better, GPT-5.1 or Qwen3.5 2B?

GPT-5.1 vs Qwen3.5 2B

23 SHARED BENCHMARKS

Across 23 shared benchmarks, GPT-5.1 scores higher on 23 and Qwen3.5 2B on 0. The widest gap is TauBench V3 - Banking, where GPT-5.1 scores 15.9 against 2.5.

OPENAIVSALIBABA23 SHARED23–0 HEAD-TO-HEAD

BenchmarkGPT-5.1MARGINQwen3.5 2B

AA Agentic Index32.20.8

AA Intelligence256.9

AA-LCR8025.6

AA-Omniscience5.4-60.2

AIME 202594.219

Artificial Analysis Coding Index49.42.9

critpt4.90

gdpval250

GPQA Diamond88.151.6

HLE28.55

IFBench72.941.3

MMLU-Pro8766.5

mmmlu9163.1

MMMU-Pro75.543

multichallenge63.433.7

OmniScience Accuracy37.78.1

OmniScience Non-Hallucination48.125.8

scicode43.37.2

TauBench V3 - Banking15.92.5

Terminal-Bench 2.152.43

Terminal-Bench Hard45.53.8

τ²-Bench Telecom (AA run)81.981.6

τ³-Bench146.2

Best tracked score per model per benchmark (default configuration; source-attributed). ↓ marks lower-is-better metrics. Open either model for its full surface, provenance and pricing.

Compare GPT-5.1 withALL PAIRINGS →

OpenAIGPT-5.5 GPT-4o GPT-5.6 Sol GPT-5.4 GPT-5.2 GPT-5

Across the fieldQwen3.6 27B Qwen3.7 Max Qwen3.8 Max Preview Qwen3.7 Plus Preview Claude Opus 4 Qwen3.5 4B Gemini 3.6 Flash Nemotron 3 Super 120B A12B

Compare Qwen3.5 2B withALL PAIRINGS →

AlibabaQwen3.5 35B A3B Qwen3 VL 4B (Reasoning)Qwen3.5 397B A17B Qwen2.5 Instruct 72B Qwen3.5 27B Qwen3.6 Plus

Across the fieldClaude Opus 5 Gemma 4 26B A4B Kimi K3 Llama 3.1 Instruct 405B DeepSeek-V3.2 DeepSeek-V4-Flash Claude Opus 4.7 Gemini 2.5 Pro