Model comparison
Mercury 2 vs Qwen Plus
Mercury 2 is the stronger model overall, scoring 39.1 to 37.1 on the Noometry Index.
Last verified . 11 shared benchmarks.
Alibaba (Qwen)Summary
- They share 11 benchmarks with published results for both. Mercury 2 scores higher in 5 categories and Qwen Plus in 2 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Mercury 2 leads 36.2 to 27.4.
- Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $0.40 / $1.20 for Qwen Plus.
- Qwen Plus accepts more context: 1M tokens versus 128K.
Side by side
| Mercury 2 | Qwen Plus | |
|---|---|---|
| Provider | Inception | Alibaba (Qwen) |
| Noometry Index | 39.1 | 37.1 |
| Released | 2026-02-20 | 2024-01-25 |
| Weights | Proprietary | Proprietary |
| Context window | 128K | 1M |
| Max output | 50K | 33K |
| Input $ / M tokens | $0.25 | $0.40 |
| Output $ / M tokens | $0.75 | $1.20 |
| Results tracked | 17 | 20 |
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Category by category
Coding Qwen Plus leads
Mercury 2: 33.5 (#255), Qwen Plus: 38.9 (#167)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| LMArena Coding | 1391 | 1328 |
| LMArena WebDev | 1171 | — |
| SciCode | 38.7% | — |
| WeirdML | 43.2% | — |
| ALE-Bench | 785.58 | — |
Reasoning Qwen Plus leads
Mercury 2: 23.8 (#170), Qwen Plus: 28.4 (#107)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| LMArena Hard Prompts | 1362 | 1317 |
| Kagi LLM Benchmark | — | 63.3% |
| CritPt | 0.8% | — |
| DTBench | — | 81.1% |
| LMCA | — | 24% |
Math Not comparable
Mercury 2: —, Qwen Plus: 23.3 (#271)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | — | 17.8% |
| LMArena Math | — | 1326 |
| MATH Level 5 | — | 65.3% |
| FrontierMath (Feb 2025 set) | — | 1.7% |
Knowledge Mercury 2 leads
Mercury 2: 36.2 (#172), Qwen Plus: 27.4 (#251)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| LMArena Expert | 1358 | 1328 |
| GPQA Diamond | — | 48.1% |
| Vectara Hallucination Rate | 12.3% | — |
Multilingual Mercury 2 leads
Mercury 2: 46.6 (#157), Qwen Plus: 45.1 (#175)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| LMArena Non-English | 1331 | 1310 |
| LMArena Chinese | 1417 | 1347 |
| LMArena Russian | 1304 | 1323 |
| LMArena Japanese | — | 1251 |
Instruction Following Mercury 2 leads
Mercury 2: 70.2 (#165), Qwen Plus: 68.8 (#181)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| LMArena Instruction Following | 1329 | 1303 |
Long Context Too close to call
Mercury 2: 40.5 (#154), Qwen Plus: 40.3 (#158)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| LMArena Longer Query | 1330 | 1324 |
Writing & Preference Mercury 2 leads
Mercury 2: 53.8 (#155), Qwen Plus: 52.2 (#176)
| Benchmark | Mercury 2 | Qwen Plus |
|---|---|---|
| LMArena Text | 1355 | 1326 |
| LMArena Creative Writing | 1289 | 1293 |
| LMArena Multi-Turn | 1358 | 1336 |
Frequently asked questions
Is Mercury 2 better than Qwen Plus?
Mercury 2 is the stronger model overall, scoring 39.1 to 37.1 on the Noometry Index.
Which is cheaper, Mercury 2 or Qwen Plus?
Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Qwen Plus lists at $0.40 and $1.20.
Is Mercury 2 or Qwen Plus better for coding?
Qwen Plus scores higher on coding benchmarks: 38.9 versus 33.5 in the Noometry coding category.
Which has the bigger context window?
Qwen Plus does, with 1M tokens against 128K.
How many benchmarks do Mercury 2 and Qwen Plus share?
11 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Qwen Plus has 20.