Model comparison
Mercury vs Qwen3.5 Plus
Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 37.3 on the Noometry Index.
Last verified . 0 shared benchmarks.
Alibaba (Qwen)Summary
- The widest gap is in reasoning, where Qwen3.5 Plus leads 32.0 to 16.8.
Side by side
| Mercury | Qwen3.5 Plus | |
|---|---|---|
| Provider | Inception | Alibaba (Qwen) |
| Noometry Index | 37.3 | 42.3 |
| Released | — | 2026-02-16 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1M |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.40 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 9 | 15 |
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Category by category
Coding Not comparable
Mercury: 38.1 (#164), Qwen3.5 Plus: —
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| LMArena Coding | 1323 | — |
| ALE-Bench | — | 621.92 |
Agentic & Tool Use Not comparable
Mercury: —, Qwen3.5 Plus: —
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| Vending-Bench 2 | — | 0.54 |
Reasoning Qwen3.5 Plus leads
Mercury: 16.8 (#288), Qwen3.5 Plus: 32.0 (#67)
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| Kagi LLM Benchmark | 21.6% | — |
| Chess Puzzles | — | 22% |
| LMArena Hard Prompts | 1284 | — |
| Mystery Game Puzzles | — | 17% |
| DTBench | — | 80.5% |
| LMCA | — | 36.4% |
| Epoch Capabilities Index | — | 146.79 |
Math Not comparable
Mercury: —, Qwen3.5 Plus: 47.9 (#55)
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |
Knowledge Not comparable
Mercury: —, Qwen3.5 Plus: 46.0 (#78)
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | — | 84.8% |
| SimpleQA Verified | — | 25.4% |
| Vectara Hallucination Rate | — | 10.7% |
Multilingual Not comparable
Mercury: 41.7 (#201), Qwen3.5 Plus: —
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1259 | — |
Instruction Following Not comparable
Mercury: 65.3 (#220), Qwen3.5 Plus: —
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| LMArena Instruction Following | 1238 | — |
Long Context Qwen3.5 Plus leads
Mercury: 38.3 (#193), Qwen3.5 Plus: 42.9 (#109)
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1264 | — |
Writing & Preference Not comparable
Mercury: 46.2 (#216), Qwen3.5 Plus: —
| Benchmark | Mercury | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1282 | — |
| LMArena Creative Writing | 1186 | — |
| LMArena Multi-Turn | 1283 | — |
Frequently asked questions
Is Mercury better than Qwen3.5 Plus?
Qwen3.5 Plus is the stronger model overall, scoring 42.3 to 37.3 on the Noometry Index.
How many benchmarks do Mercury and Qwen3.5 Plus share?
0 benchmarks have published results for both models. Mercury has 9 scored results on Noometry and Qwen3.5 Plus has 15.