Model comparison
Llama2 70b Steerlm Chat vs Mercury 2
Mercury 2 is the stronger model overall, scoring 39.1 to 31.8 on the Noometry Index.
Last verified . 8 shared benchmarks.
NVIDIASummary
- They share 8 benchmarks with published results for both. Llama2 70b Steerlm Chat scores higher in 0 categories and Mercury 2 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Mercury 2 leads 53.8 to 31.6.
- Llama2 70b Steerlm Chat has downloadable open weights; the other is API-only.
Side by side
| Llama2 70b Steerlm Chat | Mercury 2 | |
|---|---|---|
| Provider | NVIDIA | Inception |
| Noometry Index | 31.8 | 39.1 |
| Released | — | 2026-02-20 |
| Weights | Open | Proprietary |
| Context window | — | 128K |
| Max output | — | 50K |
| Input $ / M tokens | — | $0.25 |
| Output $ / M tokens | — | $0.75 |
| Results tracked | 9 | 17 |
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Category by category
Coding Mercury 2 leads
Llama2 70b Steerlm Chat: 29.9 (#300), Mercury 2: 33.5 (#255)
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| LMArena Coding | 1025 | 1391 |
| LMArena WebDev | — | 1171 |
| SciCode | — | 38.7% |
| WeirdML | — | 43.2% |
| ALE-Bench | — | 785.58 |
Reasoning Mercury 2 leads
Llama2 70b Steerlm Chat: 20.0 (#246), Mercury 2: 23.8 (#170)
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| LMArena Hard Prompts | 1047 | 1362 |
| CritPt | — | 0.8% |
Math Not comparable
Llama2 70b Steerlm Chat: 31.3 (#226), Mercury 2: —
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| LMArena Math | 1072 | — |
Knowledge Not comparable
Llama2 70b Steerlm Chat: —, Mercury 2: 36.2 (#172)
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| Vectara Hallucination Rate | — | 12.3% |
| LMArena Expert | — | 1358 |
Multilingual Mercury 2 leads
Llama2 70b Steerlm Chat: 28.8 (#270), Mercury 2: 46.6 (#157)
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| LMArena Non-English | 1063 | 1331 |
| LMArena Chinese | — | 1417 |
| LMArena Russian | — | 1304 |
Instruction Following Mercury 2 leads
Llama2 70b Steerlm Chat: 54.2 (#279), Mercury 2: 70.2 (#165)
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| LMArena Instruction Following | 1060 | 1329 |
Long Context Mercury 2 leads
Llama2 70b Steerlm Chat: 30.4 (#288), Mercury 2: 40.5 (#154)
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| LMArena Longer Query | 998 | 1330 |
Writing & Preference Mercury 2 leads
Llama2 70b Steerlm Chat: 31.6 (#283), Mercury 2: 53.8 (#155)
| Benchmark | Llama2 70b Steerlm Chat | Mercury 2 |
|---|---|---|
| LMArena Text | 1098 | 1355 |
| LMArena Creative Writing | 1091 | 1289 |
| LMArena Multi-Turn | 1058 | 1358 |
Frequently asked questions
Is Llama2 70b Steerlm Chat better than Mercury 2?
Mercury 2 is the stronger model overall, scoring 39.1 to 31.8 on the Noometry Index.
Is Llama2 70b Steerlm Chat or Mercury 2 better for coding?
Mercury 2 scores higher on coding benchmarks: 33.5 versus 29.9 in the Noometry coding category.
How many benchmarks do Llama2 70b Steerlm Chat and Mercury 2 share?
8 benchmarks have published results for both models. Llama2 70b Steerlm Chat has 9 scored results on Noometry and Mercury 2 has 17.