Model comparison
Gemini 3 Deep Think vs Mercury 2.5
Mercury 2.5 has enough public results to be ranked (#242); 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 2.5 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 22.4.
- The biggest single-benchmark swing is CritPt: 25.7% for Gemini 3 Deep Think and 0% for Mercury 2.5.
Side by side
| Gemini 3 Deep Think | Mercury 2.5 | |
|---|---|---|
| Provider | Inception | |
| Noometry Index | 58.3 | 33.5 |
| Released | 2026-02-12 | 2026-09-08 |
| Weights | Proprietary | Proprietary |
| Context window | — | 260K |
| Max output | — | 66K |
| Input $ / M tokens | — | $0.04 |
| Output $ / M tokens | — | $0.15 |
| Results tracked | 3 | 4 |
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Category by category
Coding Not comparable
Gemini 3 Deep Think: —, Mercury 2.5: 39.5 (#156)
Reasoning Gemini 3 Deep Think leads
Gemini 3 Deep Think: 70.2 (#14), Mercury 2.5: 22.4 (#193)
| Benchmark | Gemini 3 Deep Think | Mercury 2.5 |
|---|---|---|
| CritPt | 25.7% | 0% |
| ARC-AGI-2 | 84.6% | — |
| ARC-AGI-1 | 96% | — |
Math Not comparable
Gemini 3 Deep Think: —, Mercury 2.5: 23.3 (#272)
| Benchmark | Gemini 3 Deep Think | Mercury 2.5 |
|---|---|---|
| ProofBench | — | 3% |
Frequently asked questions
Is Gemini 3 Deep Think better than Mercury 2.5?
Mercury 2.5 has enough public results to be ranked (#242); Gemini 3 Deep Think does not yet, so treat this comparison as directional.
How many benchmarks do Gemini 3 Deep Think and Mercury 2.5 share?
1 benchmark has published results for both models. Gemini 3 Deep Think has 3 scored results on Noometry and Mercury 2.5 has 4.