# Gemini 2.5 Deep Think vs Gemini 3.6 Flash

> Gemini 3.6 Flash has enough public results to be ranked (#30); Gemini 2.5 Deep Think does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/gemini-2-5-deep-think-vs-gemini-3-6-flash
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Snapshot

| | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| Provider | Google | Google |
| Noometry Index | — | 54.1 |
| Rank | — | 30 |
| Context | — | 1.05M |
| Input $/M | — | $0.75 |
| Output $/M | — | $3.75 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 49.6 (#45)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| DeepSWE | — | 46.7% |
| FrontierCode | — | 34.4% |
| LMArena WebDev | — | 1536 |
| SciCode | — | 52.7% |
| WeirdML | — | 56.1% |
| LMArena Coding | — | 1492 |
| ALE-Bench | — | 715.52 |

## Agentic & Tool Use

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 32.4 (#56)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| APEX-Agents | — | 46.9% |
| GDP.pdf | — | 14% |

## Reasoning

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 58.9 (#20)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| ARC-AGI-2 | — | 60.4% |
| NYT Connections (extended) | — | 89% |
| ARC-AGI-1 | — | 91.2% |
| CritPt | — | 10.6% |
| Chess Puzzles | — | 43% |
| LMArena Hard Prompts | — | 1486 |
| Mystery Game Puzzles | — | 30% |
| DTBench | — | 95.5% |
| LMCA | — | 44.9% |
| Epoch Capabilities Index | — | 154.36 |

## Math

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 57.0 (#33)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | — | 58.9% |
| FrontierMath Tier 4 | — | 22% |
| MathArena Final-Answer Competitions | — | 70.8% |
| OTIS Mock AIME 2024-2025 | — | 94.2% |
| ProofBench | — | 36% |
| LMArena Math | — | 1504 |
| FrontierMath (Feb 2025 set) | 29% | — |
| FrontierMath Tier 4 (v1) | 10.4% | — |

## Knowledge

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 67.8 (#7)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| GPQA Diamond | — | 94.1% |
| SimpleQA Verified | — | 66.2% |
| LMArena Expert | — | 1489 |

## Multimodal

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 38.7 (#55)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| LMArena Vision | — | 1297 |
| Blueprint-Bench 2 | — | 31.2% |
| Furniture Assembly | — | 23.3% |
| LMArena Document | — | 1456 |

## Multilingual

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 56.8 (#17)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| LMArena Non-English | — | 1470 |
| LMArena Chinese | — | 1530 |
| LMArena French | — | 1501 |
| LMArena German | — | 1478 |
| LMArena Japanese | — | 1477 |
| LMArena Korean | — | 1435 |
| LMArena Russian | — | 1490 |
| LMArena Spanish | — | 1477 |

## Instruction Following

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 77.2 (#27)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| LMArena Instruction Following | — | 1467 |

## Long Context

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 45.1 (#47)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| LMArena Longer Query | — | 1475 |

## Writing & Preference

- Gemini 2.5 Deep Think: —
- Gemini 3.6 Flash: 68.3 (#26)

| Benchmark | Gemini 2.5 Deep Think | Gemini 3.6 Flash |
|---|---|---|
| LMArena Text | — | 1478 |
| LMArena Creative Writing | — | 1464 |
| EQ-Bench Creative Writing | — | 1604 |
| LMArena Multi-Turn | — | 1481 |

## FAQ

### Is Gemini 2.5 Deep Think better than Gemini 3.6 Flash?

Gemini 3.6 Flash has enough public results to be ranked (#30); Gemini 2.5 Deep Think does not yet, so treat this comparison as directional.

### How many benchmarks do Gemini 2.5 Deep Think and Gemini 3.6 Flash share?

0 benchmarks have published results for both models. Gemini 2.5 Deep Think has 2 scored results on Noometry and Gemini 3.6 Flash has 46.