Model comparison
Gemini 2.5 Pro vs Mercury 2.5
Gemini 2.5 Pro has enough public results to be ranked (#67); Mercury 2.5 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 2.5 Pro scores higher in 1 category and Mercury 2.5 in 0 categories; one gap is clear of the uncertainty.
- The widest gap is in math, where Gemini 2.5 Pro leads 31.9 to 22.4.
- Mercury 2.5 is cheaper at $0.04 / $0.15 per million input/output tokens, against $1.25 / $10 for Gemini 2.5 Pro.
- Gemini 2.5 Pro accepts more context: 1.05M tokens versus 260K.
Side by side
| Gemini 2.5 Pro | Mercury 2.5 | |
|---|---|---|
| Provider | Inception | |
| Noometry Index | 44.9 | 30.2 |
| Released | 2025-03-25 | 2026-09-08 |
| Weights | Proprietary | Proprietary |
| Context window | 1.05M | 260K |
| Max output | 66K | 66K |
| Input $ / M tokens | $1.25 | $0.04 |
| Output $ / M tokens | $10 | $0.15 |
| Results tracked | 78 | 2 |
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Category by category
Coding Not comparable
Gemini 2.5 Pro: 42.8 (#86), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| ALE-Bench | 785.52 | 301.65 |
| SWE-bench Verified | 57.6% | — |
| SWE-bench Verified (bash only) | 53.6% | — |
| Aider Polyglot | 83.1% | — |
| LMArena WebDev | 1227 | — |
| SciCode | 42.8% | — |
| GSO | 3.9% | — |
| WeirdML | 54% | — |
| LiveBench Coding | 85.9% | — |
| LMArena Coding | 1452 | — |
| CadEval | 64% | — |
| AlgoTune | 1.51 | — |
Agentic & Tool Use Not comparable
Gemini 2.5 Pro: 29.1 (#81), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| Terminal-Bench | 32.6% | — |
| GDPval | 23.3% | — |
| Remote Labor Index | 0.8% | — |
| TheAgentCompany | 30.3% | — |
| τ²-bench Banking | 13.7% | — |
| DeepResearch Bench | 42.8% | — |
| BALROG | 43.3% | — |
| LMArena Search | 1142 | — |
| METR Time Horizons | 55.4% | — |
| Vending-Bench 2 | 573.64 | — |
Reasoning Not comparable
Gemini 2.5 Pro: 28.8 (#85), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| ARC-AGI-2 | 4.9% | — |
| SimpleBench | 62.4% | — |
| Kagi LLM Benchmark | 70.3% | — |
| ARC-AGI-1 | 41% | — |
| CritPt | 2% | — |
| Chess Puzzles | 20% | — |
| EnigmaEval | 5.6% | — |
| LiveBench Reasoning | 89.8% | — |
| LMArena Hard Prompts | 1455 | — |
| DTBench | 82.4% | — |
| LiveBench Data Analysis | 79.9% | — |
| LMCA | 34.8% | — |
| Epoch Capabilities Index | 145.32 | — |
| ForecastBench | 61.3 | — |
| LiveBench | 82.3% | — |
Math Gemini 2.5 Pro leads
Gemini 2.5 Pro: 31.9 (#191), Mercury 2.5: 22.4
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 24.6% | — |
| FrontierMath Tier 4 | 0% | — |
| OTIS Mock AIME 2024-2025 | 84.7% | — |
| ProofBench | — | 3% |
| Omni-MATH | 41.6% | — |
| LiveBench Math | 90.2% | — |
| LMArena Math | 1450 | — |
| MATH Level 5 | 95.9% | — |
| FrontierMath (Feb 2025 set) | 14.1% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Not comparable
Gemini 2.5 Pro: 55.8 (#41), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| GPQA Diamond | 85.3% | — |
| Humanity's Last Exam | 21.6% | — |
| MMLU-Pro | 86.3% | — |
| Confabulations | 10.6% | — |
| Vectara Hallucination Rate | 7% | — |
| GPQA (HELM) | 74.9% | — |
| LMArena Expert | 1452 | — |
Multimodal Not comparable
Gemini 2.5 Pro: 44.5 (#16), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| LMArena Vision | 1263 | — |
| GeoBench | 86% | — |
| VPCT | 48% | — |
| LMArena Document | 1421 | — |
| SpatialViz-Bench | 44.7% | — |
Multilingual Not comparable
Gemini 2.5 Pro: 55.5 (#30), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| LMArena Non-English | 1452 | — |
| LMArena Chinese | 1507 | — |
| LMArena French | 1473 | — |
| LMArena German | 1487 | — |
| LMArena Japanese | 1462 | — |
| LMArena Korean | 1435 | — |
| LMArena Russian | 1460 | — |
| LMArena Spanish | 1473 | — |
Instruction Following Not comparable
Gemini 2.5 Pro: 75.2 (#71), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| LiveBench Instruction Following | 80.6% | — |
| IFEval | 84% | — |
| LMArena Instruction Following | 1436 | — |
Long Context Not comparable
Gemini 2.5 Pro: 59.7 (#5), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| Fiction.LiveBench | 91.7% | — |
| LMArena Longer Query | 1449 | — |
Writing & Preference Not comparable
Gemini 2.5 Pro: 63.9 (#60), Mercury 2.5: —
| Benchmark | Gemini 2.5 Pro | Mercury 2.5 |
|---|---|---|
| LMArena Text | 1458 | — |
| LMArena Creative Writing | 1453 | — |
| Short-Story Creative Writing | 83.8% | — |
| EQ-Bench Creative Writing | 1421 | — |
| WildBench | 85.7% | — |
| LMArena Multi-Turn | 1453 | — |
| LiveBench Language | 67.8% | — |
Frequently asked questions
Is Gemini 2.5 Pro better than Mercury 2.5?
Gemini 2.5 Pro has enough public results to be ranked (#67); Mercury 2.5 does not yet, so treat this comparison as directional.
Which is cheaper, Gemini 2.5 Pro or Mercury 2.5?
Mercury 2.5 is cheaper. It lists at $0.04 per million input tokens and $0.15 per million output tokens; Gemini 2.5 Pro lists at $1.25 and $10.
Which has the bigger context window?
Gemini 2.5 Pro does, with 1.05M tokens against 260K.
How many benchmarks do Gemini 2.5 Pro and Mercury 2.5 share?
1 benchmark has published results for both models. Gemini 2.5 Pro has 78 scored results on Noometry and Mercury 2.5 has 2.