# Gemini 3.7 Flash vs GPT-5.3 Chat

> Gemini 3.7 Flash is the stronger model overall, scoring 59.8 to 42.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gemini-3-7-flash-vs-gpt-5-3-chat
- Last updated: 2026-10-10
- Shared benchmarks: 18

## Summary

- They share 18 benchmarks with published results for both. Gemini 3.7 Flash scores higher in 8 categories and GPT-5.3 Chat in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Gemini 3.7 Flash leads 70.1 to 27.3.
- Gemini 3.7 Flash is cheaper at $0.75 / $3.75 per million input/output tokens, against $1.75 / $14 for GPT-5.3 Chat.
- Gemini 3.7 Flash accepts more context: 1.05M tokens versus 128K.

## Snapshot

| | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| Provider | Google | OpenAI |
| Noometry Index | 59.8 | 42.1 |
| Rank | 11 | 109 |
| Context | 1.05M | 128K |
| Input $/M | $0.75 | $1.75 |
| Output $/M | $3.75 | $14 |
| Weights | Proprietary | Proprietary |

## Coding

- Gemini 3.7 Flash: 55.7 (#19)
- GPT-5.3 Chat: 40.8 (#124)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Coding | 1499 | 1408 |
| DeepSWE | 65.5% | — |
| FrontierCode | 43.6% | — |
| LMArena WebDev | 1593 | — |
| FrontierSWE | 20.3% | — |
| SciCode | 59.8% | — |
| ALE-Bench | 904.3 | — |

## Agentic & Tool Use

- Gemini 3.7 Flash: 42.2 (#18)
- GPT-5.3 Chat: —

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| APEX-Agents | 67.8% | — |
| Remote Labor Index | 5% | — |
| GDP.pdf | 23.8% | — |

## Reasoning

- Gemini 3.7 Flash: 70.1 (#12)
- GPT-5.3 Chat: 27.3 (#105)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Hard Prompts | 1497 | 1399 |
| ARC-AGI-2 | 84.6% | — |
| NYT Connections (extended) | 94% | — |
| ARC-AGI-1 | 95.5% | — |
| CritPt | 14.3% | — |
| Chess Puzzles | 47% | — |
| Mystery Game Puzzles | 37% | — |
| DTBench | 96.8% | — |
| LMCA | 50.4% | — |
| Epoch Capabilities Index | 157.72 | — |

## Math

- Gemini 3.7 Flash: 69.5 (#18)
- GPT-5.3 Chat: 35.4 (#146)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Math | 1511 | 1389 |
| FrontierMath (Tiers 1-3) | 71.6% | — |
| FrontierMath Tier 4 | 36.6% | — |
| OTIS Mock AIME 2024-2025 | 97.2% | — |
| ProofBench | 58% | — |

## Knowledge

- Gemini 3.7 Flash: 69.8 (#4)
- GPT-5.3 Chat: 38.2 (#137)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Expert | 1508 | 1397 |
| GPQA Diamond | 94.8% | — |
| SimpleQA Verified | 69.2% | — |

## Multimodal

- Gemini 3.7 Flash: 36.9 (#69)
- GPT-5.3 Chat: —

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Vision | 1314 | — |
| Furniture Assembly | 26.7% | — |

## Multilingual

- Gemini 3.7 Flash: 57.8 (#7)
- GPT-5.3 Chat: 50.5 (#119)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Non-English | 1485 | 1383 |
| LMArena Chinese | 1553 | 1433 |
| LMArena French | 1512 | 1398 |
| LMArena German | 1485 | 1384 |
| LMArena Japanese | 1506 | 1351 |
| LMArena Korean | 1486 | 1347 |
| LMArena Russian | 1519 | 1400 |
| LMArena Spanish | 1507 | 1371 |

## Instruction Following

- Gemini 3.7 Flash: 78.0 (#12)
- GPT-5.3 Chat: 73.0 (#124)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Instruction Following | 1486 | 1378 |

## Long Context

- Gemini 3.7 Flash: 45.8 (#28)
- GPT-5.3 Chat: 42.6 (#115)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Longer Query | 1493 | 1396 |

## Writing & Preference

- Gemini 3.7 Flash: 71.4 (#19)
- GPT-5.3 Chat: 63.3 (#65)

| Benchmark | Gemini 3.7 Flash | GPT-5.3 Chat |
|---|---|---|
| LMArena Text | 1487 | 1389 |
| LMArena Creative Writing | 1490 | 1356 |
| EQ-Bench Creative Writing | 1723 | 1690 |
| LMArena Multi-Turn | 1495 | 1413 |

## FAQ

### Is Gemini 3.7 Flash better than GPT-5.3 Chat?

Gemini 3.7 Flash is the stronger model overall, scoring 59.8 to 42.1 on the Noometry Index.

### Which is cheaper, Gemini 3.7 Flash or GPT-5.3 Chat?

Gemini 3.7 Flash is cheaper. It lists at $0.75 per million input tokens and $3.75 per million output tokens; GPT-5.3 Chat lists at $1.75 and $14.

### Is Gemini 3.7 Flash or GPT-5.3 Chat better for coding?

Gemini 3.7 Flash scores higher on coding benchmarks: 55.7 versus 40.8 in the Noometry coding category.

### Which has the bigger context window?

Gemini 3.7 Flash does, with 1.05M tokens against 128K.

### How many benchmarks do Gemini 3.7 Flash and GPT-5.3 Chat share?

18 benchmarks have published results for both models. Gemini 3.7 Flash has 44 scored results on Noometry and GPT-5.3 Chat has 18.