# GPT-5.3 Chat vs Llama 2-70B

> GPT-5.3 Chat is the stronger model overall, scoring 42.1 to 24.1 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-3-chat-vs-llama-2-70b
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. GPT-5.3 Chat scores higher in 8 categories and Llama 2-70B in 0 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where GPT-5.3 Chat leads 38.2 to 7.4.
- Llama 2-70B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 42.1 | 24.1 |
| Rank | 109 | 343 |
| Context | 128K | — |
| Input $/M | $1.75 | — |
| Output $/M | $14 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.3 Chat: 40.8 (#124)
- Llama 2-70B: 30.8 (#281)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Coding | 1408 | 1079 |

## Reasoning

- GPT-5.3 Chat: 27.3 (#105)
- Llama 2-70B: 13.7 (#324)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Hard Prompts | 1399 | 1073 |
| DTBench | — | 41.6% |
| BIG-Bench Hard | — | 64.9% |
| CommonsenseQA 2.0 | — | 50% |
| Epoch Capabilities Index | — | 113.59 |
| ForecastBench | — | 51.4 |
| HellaSwag | — | 85.3% |
| LAMBADA | — | 78.9% |
| PIQA | — | 82.8% |
| WinoGrande | — | 80.2% |

## Math

- GPT-5.3 Chat: 35.4 (#146)
- Llama 2-70B: 7.5 (#320)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Math | 1389 | 1091 |
| OTIS Mock AIME 2024-2025 | — | 0% |
| MATH Level 5 | — | 3.3% |
| GSM8K | — | 69.6% |

## Knowledge

- GPT-5.3 Chat: 38.2 (#137)
- Llama 2-70B: 7.4 (#305)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Expert | 1397 | 1039 |
| GPQA Diamond | — | 26.3% |
| ARC (AI2) Challenge | — | 78.3% |
| BoolQ | — | 88.6% |
| MMLU | — | 69.9% |
| OpenBookQA | — | 60.2% |
| TriviaQA | — | 87.6% |

## Multilingual

- GPT-5.3 Chat: 50.5 (#119)
- Llama 2-70B: 27.9 (#269)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Non-English | 1383 | 1045 |
| LMArena Chinese | 1433 | 994 |
| LMArena French | 1398 | 1089 |
| LMArena German | 1384 | 1041 |
| LMArena Japanese | 1351 | 927 |
| LMArena Korean | 1347 | 964 |
| LMArena Russian | 1400 | 1083 |
| LMArena Spanish | 1371 | 1142 |

## Instruction Following

- GPT-5.3 Chat: 73.0 (#124)
- Llama 2-70B: 55.1 (#273)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Instruction Following | 1378 | 1071 |

## Long Context

- GPT-5.3 Chat: 42.6 (#115)
- Llama 2-70B: 32.2 (#265)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Longer Query | 1396 | 1062 |

## Writing & Preference

- GPT-5.3 Chat: 63.3 (#65)
- Llama 2-70B: 32.5 (#274)

| Benchmark | GPT-5.3 Chat | Llama 2-70B |
|---|---|---|
| LMArena Text | 1389 | 1115 |
| LMArena Creative Writing | 1356 | 1075 |
| LMArena Multi-Turn | 1413 | 1088 |
| EQ-Bench Creative Writing | 1690 | — |

## FAQ

### Is GPT-5.3 Chat better than Llama 2-70B?

GPT-5.3 Chat is the stronger model overall, scoring 42.1 to 24.1 on the Noometry Index.

### Is GPT-5.3 Chat or Llama 2-70B better for coding?

GPT-5.3 Chat scores higher on coding benchmarks: 40.8 versus 30.8 in the Noometry coding category.

### How many benchmarks do GPT-5.3 Chat and Llama 2-70B share?

17 benchmarks have published results for both models. GPT-5.3 Chat has 18 scored results on Noometry and Llama 2-70B has 35.