# gpt-oss-20b vs Llama 3-70B

> gpt-oss-20b is the stronger model overall, scoring 32.1 to 28.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-oss-20b-vs-llama-3-70b
- Last updated: 2026-10-10
- Shared benchmarks: 21

## Summary

- They share 21 benchmarks with published results for both. gpt-oss-20b scores higher in 6 categories and Llama 3-70B in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where gpt-oss-20b leads 37.6 to 12.0.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 65.3% for gpt-oss-20b and 4.3% for Llama 3-70B.

## Snapshot

| | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 32.1 | 28.5 |
| Rank | 249 | 317 |
| Context | 131K | — |
| Input $/M | $0.018 | — |
| Output $/M | $0.09 | — |
| Weights | Open | Open |

## Coding

- gpt-oss-20b: 37.1 (#185)
- Llama 3-70B: 35.3 (#215)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| LMArena Coding | 1307 | 1206 |
| SciCode | 34.4% | — |
| WeirdML | 40.9% | — |
| BigCodeBench Instruct | — | 43.6% |
| BigCodeBench Complete | — | 54.5% |
| ALE-Bench | 566.05 | — |
| HumanEval+ | — | 72% |
| MBPP+ | — | 69% |

## Agentic & Tool Use

- gpt-oss-20b: 9.2 (#146)
- Llama 3-70B: 20.9 (#132)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| Terminal-Bench | 3.4% | — |
| Cybench | — | 5% |

## Reasoning

- gpt-oss-20b: 18.8 (#251)
- Llama 3-70B: 17.4 (#284)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| Kagi LLM Benchmark | 53.2% | 35.1% |
| LMArena Hard Prompts | 1274 | 1195 |
| DTBench | 68% | 54.2% |
| Epoch Capabilities Index | 137.81 | 122.91 |
| CritPt | 1.4% | — |
| Chess Puzzles | 4% | — |
| LMCA | 14.5% | — |
| ForecastBench | — | 57.1 |
| WinoGrande | — | 83.5% |

## Math

- gpt-oss-20b: 37.6 (#93)
- Llama 3-70B: 12.0 (#299)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 65.3% | 4.3% |
| LMArena Math | 1317 | 1218 |
| Omni-MATH | 56.5% | — |
| MATH Level 5 | — | 22.6% |

## Knowledge

- gpt-oss-20b: 34.6 (#186)
- Llama 3-70B: 20.8 (#272)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| GPQA Diamond | 60.8% | 40.6% |
| LMArena Expert | 1258 | 1149 |
| MMLU-Pro | 74% | — |
| GPQA (HELM) | 59.4% | — |
| MMLU | — | 79.3% |

## Multilingual

- gpt-oss-20b: 42.4 (#192)
- Llama 3-70B: 33.8 (#246)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| LMArena Non-English | 1269 | 1142 |
| LMArena Chinese | 1311 | 1114 |
| LMArena German | 1249 | 1169 |
| LMArena Japanese | 1245 | 1017 |
| LMArena Korean | 1239 | 1017 |
| LMArena Russian | 1279 | 1159 |
| LMArena Spanish | 1267 | 1241 |
| LMArena French | — | 1231 |

## Instruction Following

- gpt-oss-20b: 62.0 (#235)
- Llama 3-70B: 62.8 (#233)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| LMArena Instruction Following | 1236 | 1194 |
| IFEval | 73.2% | — |

## Long Context

- gpt-oss-20b: 37.9 (#203)
- Llama 3-70B: 35.6 (#235)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| LMArena Longer Query | 1251 | 1174 |

## Writing & Preference

- gpt-oss-20b: 35.8 (#260)
- Llama 3-70B: 43.0 (#225)

| Benchmark | gpt-oss-20b | Llama 3-70B |
|---|---|---|
| LMArena Text | 1288 | 1221 |
| LMArena Creative Writing | 1201 | 1210 |
| LMArena Multi-Turn | 1268 | 1223 |
| EQ-Bench Creative Writing | 666 | — |
| WildBench | 73.7% | — |

## FAQ

### Is gpt-oss-20b better than Llama 3-70B?

gpt-oss-20b is the stronger model overall, scoring 32.1 to 28.5 on the Noometry Index.

### Is gpt-oss-20b or Llama 3-70B better for coding?

gpt-oss-20b scores higher on coding benchmarks: 37.1 versus 35.3 in the Noometry coding category.

### How many benchmarks do gpt-oss-20b and Llama 3-70B share?

21 benchmarks have published results for both models. gpt-oss-20b has 34 scored results on Noometry and Llama 3-70B has 31.