Model comparison
Gemini 3 Deep Think vs Mercury 2
Mercury 2 has enough public results to be ranked (#175); Gemini 3 Deep Think does not yet, so treat this comparison as directional.
Last verified . 1 shared benchmarks.
GoogleSummary
- They share 1 benchmark with published results for both. Gemini 3 Deep Think scores higher in 1 category and Mercury 2 in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3 Deep Think leads 70.2 to 23.8.
- The biggest single-benchmark swing is CritPt: 25.7% for Gemini 3 Deep Think and 0.8% for Mercury 2.
Side by side
| Gemini 3 Deep Think | Mercury 2 | |
|---|---|---|
| Provider | Inception | |
| Noometry Index | 58.3 | 39.1 |
| Released | 2026-02-12 | 2026-02-20 |
| Weights | Proprietary | Proprietary |
| Context window | — | 128K |
| Max output | — | 50K |
| Input $ / M tokens | — | $0.25 |
| Output $ / M tokens | — | $0.75 |
| Results tracked | 3 | 17 |
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Category by category
Coding Not comparable
Gemini 3 Deep Think: —, Mercury 2: 33.5 (#255)
| Benchmark | Gemini 3 Deep Think | Mercury 2 |
|---|---|---|
| LMArena WebDev | — | 1171 |
| SciCode | — | 38.7% |
| WeirdML | — | 43.2% |
| LMArena Coding | — | 1391 |
| ALE-Bench | — | 785.58 |
Reasoning Gemini 3 Deep Think leads
Gemini 3 Deep Think: 70.2 (#14), Mercury 2: 23.8 (#170)
| Benchmark | Gemini 3 Deep Think | Mercury 2 |
|---|---|---|
| CritPt | 25.7% | 0.8% |
| ARC-AGI-2 | 84.6% | — |
| ARC-AGI-1 | 96% | — |
| LMArena Hard Prompts | — | 1362 |
Knowledge Not comparable
Gemini 3 Deep Think: —, Mercury 2: 36.2 (#172)
| Benchmark | Gemini 3 Deep Think | Mercury 2 |
|---|---|---|
| Vectara Hallucination Rate | — | 12.3% |
| LMArena Expert | — | 1358 |
Multilingual Not comparable
Gemini 3 Deep Think: —, Mercury 2: 46.6 (#157)
| Benchmark | Gemini 3 Deep Think | Mercury 2 |
|---|---|---|
| LMArena Non-English | — | 1331 |
| LMArena Chinese | — | 1417 |
| LMArena Russian | — | 1304 |
Instruction Following Not comparable
Gemini 3 Deep Think: —, Mercury 2: 70.2 (#165)
| Benchmark | Gemini 3 Deep Think | Mercury 2 |
|---|---|---|
| LMArena Instruction Following | — | 1329 |
Long Context Not comparable
Gemini 3 Deep Think: —, Mercury 2: 40.5 (#154)
| Benchmark | Gemini 3 Deep Think | Mercury 2 |
|---|---|---|
| LMArena Longer Query | — | 1330 |
Writing & Preference Not comparable
Gemini 3 Deep Think: —, Mercury 2: 53.8 (#155)
| Benchmark | Gemini 3 Deep Think | Mercury 2 |
|---|---|---|
| LMArena Text | — | 1355 |
| LMArena Creative Writing | — | 1289 |
| LMArena Multi-Turn | — | 1358 |
Frequently asked questions
Is Gemini 3 Deep Think better than Mercury 2?
Mercury 2 has enough public results to be ranked (#175); Gemini 3 Deep Think does not yet, so treat this comparison as directional.
How many benchmarks do Gemini 3 Deep Think and Mercury 2 share?
1 benchmark has published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and Mercury 2 has 17.