Model comparison
Mercury 2 vs Mistral Medium 3.1
Mercury 2 is the stronger model overall, scoring 39.1 to 31.9 on the Noometry Index.
Last verified . 0 shared benchmarks.
Mistral AISummary
- The widest gap is in reasoning, where Mercury 2 leads 23.8 to 10.6.
- Mercury 2 is cheaper at $0.25 / $0.75 per million input/output tokens, against $0.40 / $2 for Mistral Medium 3.1.
- Mistral Medium 3.1 accepts more context: 131K tokens versus 128K.
Side by side
| Mercury 2 | Mistral Medium 3.1 | |
|---|---|---|
| Provider | Inception | Mistral AI |
| Noometry Index | 39.1 | 31.9 |
| Released | 2026-02-20 | — |
| Weights | Proprietary | Proprietary |
| Context window | 128K | 131K |
| Max output | 50K | 105K |
| Input $ / M tokens | $0.25 | $0.40 |
| Output $ / M tokens | $0.75 | $2 |
| Results tracked | 17 | 3 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Not comparable
Mercury 2: 33.5 (#255), Mistral Medium 3.1: —
| Benchmark | Mercury 2 | Mistral Medium 3.1 |
|---|---|---|
| LMArena WebDev | 1171 | — |
| SciCode | 38.7% | — |
| WeirdML | 43.2% | — |
| LMArena Coding | 1391 | — |
| ALE-Bench | 785.58 | — |
Reasoning Mercury 2 leads
Mercury 2: 23.8 (#170), Mistral Medium 3.1: 10.6 (#341)
| Benchmark | Mercury 2 | Mistral Medium 3.1 |
|---|---|---|
| NYT Connections (extended) | — | 6.5% |
| CritPt | 0.8% | — |
| Thematic Generalization | — | 20.3% |
| LMArena Hard Prompts | 1362 | — |
Knowledge Not comparable
Mercury 2: 36.2 (#172), Mistral Medium 3.1: —
| Benchmark | Mercury 2 | Mistral Medium 3.1 |
|---|---|---|
| Vectara Hallucination Rate | 12.3% | — |
| LMArena Expert | 1358 | — |
Multilingual Not comparable
Mercury 2: 46.6 (#157), Mistral Medium 3.1: —
| Benchmark | Mercury 2 | Mistral Medium 3.1 |
|---|---|---|
| LMArena Non-English | 1331 | — |
| LMArena Chinese | 1417 | — |
| LMArena Russian | 1304 | — |
Instruction Following Not comparable
Mercury 2: 70.2 (#165), Mistral Medium 3.1: —
| Benchmark | Mercury 2 | Mistral Medium 3.1 |
|---|---|---|
| LMArena Instruction Following | 1329 | — |
Long Context Not comparable
Mercury 2: 40.5 (#154), Mistral Medium 3.1: —
| Benchmark | Mercury 2 | Mistral Medium 3.1 |
|---|---|---|
| LMArena Longer Query | 1330 | — |
Writing & Preference Mistral Medium 3.1 leads
Mercury 2: 53.8 (#155), Mistral Medium 3.1: 55.5 (#145)
| Benchmark | Mercury 2 | Mistral Medium 3.1 |
|---|---|---|
| LMArena Text | 1355 | — |
| LMArena Creative Writing | 1289 | — |
| EQ-Bench Creative Writing | — | 1476 |
| LMArena Multi-Turn | 1358 | — |
Frequently asked questions
Is Mercury 2 better than Mistral Medium 3.1?
Mercury 2 is the stronger model overall, scoring 39.1 to 31.9 on the Noometry Index.
Which is cheaper, Mercury 2 or Mistral Medium 3.1?
Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Mistral Medium 3.1 lists at $0.40 and $2.
Which has the bigger context window?
Mistral Medium 3.1 does, with 131K tokens against 128K.
How many benchmarks do Mercury 2 and Mistral Medium 3.1 share?
0 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Mistral Medium 3.1 has 3.