# Gemini 2.0 Flash (Feb 2025) vs Gemini 3.1 Pro Preview

> Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 34.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-2-0-flash-vs-gemini-3-1-pro-preview
- Last updated: 2026-10-10
- Shared benchmarks: 29

## Summary

- They share 29 benchmarks with published results for both. Gemini 2.0 Flash (Feb 2025) scores higher in 0 categories and Gemini 3.1 Pro Preview in 10 categories; 10 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.1 Pro Preview leads 71.7 to 15.2.
- The biggest single-benchmark swing is ARC-AGI-2: 1.3% for Gemini 2.0 Flash (Feb 2025) and 77.1% for Gemini 3.1 Pro Preview.

## Snapshot

| | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| Provider | Google | Google |
| Noometry Index | 34.8 | 56.7 |
| Rank | 223 | 20 |
| Context | — | 1.05M |
| Input $/M | — | $2 |
| Output $/M | — | $12 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.0 Flash (Feb 2025): 28.2 (#308)
- Gemini 3.1 Pro Preview: 42.7 (#88)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| WeirdML | 25.8% | 72.1% |
| LMArena Coding | 1351 | 1483 |
| SWE-bench Verified | — | 75.6% |
| DeepSWE | — | 11.7% |
| SWE-bench Verified (bash only) | 13.5% | — |
| Aider Polyglot | 38.2% | — |
| LMArena WebDev | — | 1446 |
| SciCode | — | 58.9% |
| GSO | — | 22.6% |
| BigCodeBench Instruct | 45.9% | — |
| LiveBench Coding | 63.4% | — |
| MirrorCode | — | 8.9% |
| BigCodeBench Complete | 59.9% | — |
| CadEval | 30% | — |
| ALE-Bench | — | 1,161 |
| AlgoTune | — | 2.02 |

## Agentic & Tool Use

- Gemini 2.0 Flash (Feb 2025): 28.0 (#85)
- Gemini 3.1 Pro Preview: 37.7 (#33)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| Terminal-Bench | — | 80.2% |
| APEX-Agents | — | 35.3% |
| TheAgentCompany | 11.4% | — |
| τ²-bench Banking | — | 26% |
| DeepResearch Bench | — | 47.8% |
| PostTrainBench | — | 22% |
| BALROG | — | 57% |
| ExploitBench | — | 26.1% |
| GBAEval | — | 0.8% |
| GDP.pdf | — | 17% |
| LMArena Search | — | 1211 |
| METR Time Horizons | — | 77% |
| Vending-Bench 2 | — | 3,774 |

## Reasoning

- Gemini 2.0 Flash (Feb 2025): 15.2 (#308)
- Gemini 3.1 Pro Preview: 71.7 (#9)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| ARC-AGI-2 | 1.3% | 77.1% |
| SimpleBench | 31.1% | 79.6% |
| EnigmaEval | 1.1% | 36.8% |
| LMArena Hard Prompts | 1346 | 1484 |
| DTBench | 63.2% | 97.1% |
| Epoch Capabilities Index | 135.36 | 154.92 |
| Kagi LLM Benchmark | 37.8% | — |
| NYT Connections (extended) | — | 97.4% |
| ARC-AGI-1 | — | 98% |
| CritPt | — | 17.7% |
| Chess Puzzles | — | 55% |
| Thematic Generalization | — | 79.4% |
| EBR-Bench | — | 14.3% |
| LiveBench Reasoning | 78.2% | — |
| Mystery Game Puzzles | — | 34% |
| LiveBench Data Analysis | 69.4% | — |
| LMCA | — | 53.8% |
| ForecastBench | — | 59 |
| LiveBench | 66.9% | — |

## Math

- Gemini 2.0 Flash (Feb 2025): 36.1 (#127)
- Gemini 3.1 Pro Preview: 61.8 (#28)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 57.8% | 95.6% |
| LMArena Math | 1351 | 1485 |
| FrontierMath (Feb 2025 set) | 1.7% | 36.9% |
| FrontierMath (Tiers 1-3) | — | 59.6% |
| FrontierMath Tier 4 | — | 26.8% |
| MathArena Final-Answer Competitions | — | 86.5% |
| ProofBench | — | 26% |
| Omni-MATH | 45.9% | — |
| LiveBench Math | 75.8% | — |
| MATH Level 5 | 82.2% | — |
| FrontierMath Tier 4 (v1) | — | 16.7% |

## Knowledge

- Gemini 2.0 Flash (Feb 2025): 32.0 (#207)
- Gemini 3.1 Pro Preview: 71.8 (#3)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| GPQA Diamond | 64.1% | 94.4% |
| Humanity's Last Exam | 6.6% | 46.4% |
| LMArena Expert | 1340 | 1484 |
| SimpleQA Verified | — | 73.5% |
| MMLU-Pro | 73.7% | — |
| Confabulations | 12.4% | — |
| Vectara Hallucination Rate | — | 10.4% |
| GPQA (HELM) | 55.6% | — |
| MMLU | 79.7% | — |

## Multimodal

- Gemini 2.0 Flash (Feb 2025): 35.9 (#74)
- Gemini 3.1 Pro Preview: 38.1 (#60)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Vision | 1158 | 1296 |
| GeoBench | 77% | — |
| Blueprint-Bench 2 | — | 26.5% |
| Furniture Assembly | — | 26.7% |
| LMArena Document | — | 1444 |

## Multilingual

- Gemini 2.0 Flash (Feb 2025): 47.6 (#144)
- Gemini 3.1 Pro Preview: 57.1 (#11)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Non-English | 1342 | 1475 |
| LMArena Chinese | 1373 | 1528 |
| LMArena French | 1390 | 1488 |
| LMArena German | 1354 | 1491 |
| LMArena Japanese | 1293 | 1494 |
| LMArena Korean | 1314 | 1458 |
| LMArena Russian | 1351 | 1496 |
| LMArena Spanish | 1363 | 1480 |

## Instruction Following

- Gemini 2.0 Flash (Feb 2025): 74.6 (#91)
- Gemini 3.1 Pro Preview: 77.1 (#31)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Instruction Following | 1336 | 1465 |
| LiveBench Instruction Following | 85.8% | — |
| IFEval | 84.1% | — |

## Long Context

- Gemini 2.0 Flash (Feb 2025): 38.1 (#198)
- Gemini 3.1 Pro Preview: 47.3 (#17)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Longer Query | 1345 | 1482 |
| Fiction.LiveBench | 61.1% | — |
| CL-bench | — | 20.8% |
| CL-bench Life | — | 16.9% |

## Writing & Preference

- Gemini 2.0 Flash (Feb 2025): 49.8 (#184)
- Gemini 3.1 Pro Preview: 66.3 (#36)

| Benchmark | Gemini 2.0 Flash (Feb 2025) | Gemini 3.1 Pro Preview |
|---|---|---|
| LMArena Text | 1354 | 1480 |
| LMArena Creative Writing | 1340 | 1482 |
| EQ-Bench Creative Writing | 1128 | 1491 |
| LMArena Multi-Turn | 1350 | 1486 |
| Short-Story Creative Writing | 73.8% | — |
| WildBench | 80% | — |
| EQ-Bench 4 | — | 1142 |
| LiveBench Language | 51.3% | — |

## FAQ

### Is Gemini 2.0 Flash (Feb 2025) better than Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is the stronger model overall, scoring 56.7 to 34.8 on the Noometry Index.

### Is Gemini 2.0 Flash (Feb 2025) or Gemini 3.1 Pro Preview better for coding?

Gemini 3.1 Pro Preview scores higher on coding benchmarks: 42.7 versus 28.2 in the Noometry coding category.

### How many benchmarks do Gemini 2.0 Flash (Feb 2025) and Gemini 3.1 Pro Preview share?

29 benchmarks have published results for both models. Gemini 2.0 Flash (Feb 2025) has 54 scored results on Noometry and Gemini 3.1 Pro Preview has 71.