Model comparison
Gemini 1.5 Flash (May 2024) vs Mercury 2
Mercury 2 is the stronger model overall, scoring 39.1 to 33.2 on the Noometry Index.
Last verified . 12 shared benchmarks.
GoogleSummary
- They share 12 benchmarks with published results for both. Gemini 1.5 Flash (May 2024) scores higher in 1 category and Mercury 2 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Mercury 2 leads 36.2 to 26.2.
- The biggest single-benchmark swing is WeirdML: 24.9% for Gemini 1.5 Flash (May 2024) and 43.2% for Mercury 2.
Side by side
| Gemini 1.5 Flash (May 2024) | Mercury 2 | |
|---|---|---|
| Provider | Inception | |
| Noometry Index | 33.2 | 39.1 |
| Released | 2024-05-14 | 2026-02-20 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 50K |
| Input $ / M tokens | — | $0.25 |
| Output $ / M tokens | — | $0.75 |
| Results tracked | 42 | 17 |
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Category by category
Coding Too close to call
Gemini 1.5 Flash (May 2024): 34.4 (#236), Mercury 2: 33.5 (#255)
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| WeirdML | 24.9% | 43.2% |
| LMArena Coding | 1261 | 1391 |
| LMArena WebDev | — | 1171 |
| SciCode | — | 38.7% |
| BigCodeBench Instruct | 43.5% | — |
| BigCodeBench Complete | 55.1% | — |
| ALE-Bench | — | 785.58 |
| HumanEval+ | 75.6% | — |
| MBPP+ | 67.5% | — |
Agentic & Tool Use Not comparable
Gemini 1.5 Flash (May 2024): 26.6 (#102), Mercury 2: —
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| BALROG | 14.6% | — |
Reasoning Mercury 2 leads
Gemini 1.5 Flash (May 2024): 21.7 (#215), Mercury 2: 23.8 (#170)
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| LMArena Hard Prompts | 1257 | 1362 |
| CritPt | — | 0.8% |
| DTBench | 53.8% | — |
| Epoch Capabilities Index | 129.36 | — |
| ForecastBench | 53.9 | — |
| PIQA | 87.5% | — |
Math Not comparable
Gemini 1.5 Flash (May 2024): 22.1 (#281), Mercury 2: —
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 16.3% | — |
| Omni-MATH | 30.4% | — |
| LMArena Math | 1269 | — |
| MATH Level 5 | 61.9% | — |
| FrontierMath (Feb 2025 set) | 0% | — |
| GSM8K | 82.4% | — |
Knowledge Mercury 2 leads
Gemini 1.5 Flash (May 2024): 26.2 (#260), Mercury 2: 36.2 (#172)
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| LMArena Expert | 1233 | 1358 |
| GPQA Diamond | 47.3% | — |
| MMLU-Pro | 67.8% | — |
| Vectara Hallucination Rate | — | 12.3% |
| GPQA (HELM) | 43.7% | — |
| BoolQ | 85.8% | — |
| MMLU | 77.9% | — |
Multimodal Not comparable
Gemini 1.5 Flash (May 2024): 36.0 (#81), Mercury 2: —
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| LMArena Vision | 1141 | — |
| Video-MME | 70.3% | — |
| GeoBench | 76% | — |
Multilingual Mercury 2 leads
Gemini 1.5 Flash (May 2024): 42.9 (#189), Mercury 2: 46.6 (#157)
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| LMArena Non-English | 1278 | 1331 |
| LMArena Chinese | 1295 | 1417 |
| LMArena Russian | 1288 | 1304 |
| LMArena French | 1258 | — |
| LMArena German | 1262 | — |
| LMArena Japanese | 1252 | — |
| LMArena Korean | 1221 | — |
| LMArena Spanish | 1243 | — |
Instruction Following Mercury 2 leads
Gemini 1.5 Flash (May 2024): 66.8 (#205), Mercury 2: 70.2 (#165)
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| LMArena Instruction Following | 1258 | 1329 |
| IFEval | 83.1% | — |
Long Context Mercury 2 leads
Gemini 1.5 Flash (May 2024): 39.0 (#187), Mercury 2: 40.5 (#154)
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| LMArena Longer Query | 1284 | 1330 |
Writing & Preference Mercury 2 leads
Gemini 1.5 Flash (May 2024): 48.7 (#196), Mercury 2: 53.8 (#155)
| Benchmark | Gemini 1.5 Flash (May 2024) | Mercury 2 |
|---|---|---|
| LMArena Text | 1287 | 1355 |
| LMArena Creative Writing | 1285 | 1289 |
| LMArena Multi-Turn | 1253 | 1358 |
| WildBench | 79.2% | — |
Frequently asked questions
Is Gemini 1.5 Flash (May 2024) better than Mercury 2?
Mercury 2 is the stronger model overall, scoring 39.1 to 33.2 on the Noometry Index.
Is Gemini 1.5 Flash (May 2024) or Mercury 2 better for coding?
They score almost the same on coding (34.4 vs 33.5); test both on your own repository before choosing.
How many benchmarks do Gemini 1.5 Flash (May 2024) and Mercury 2 share?
12 benchmarks have published results for both models. Gemini 1.5 Flash (May 2024) has 42 scored results on Noometry and Mercury 2 has 17.