# GPT-5.5 Pro vs Llama 3-70B

> GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 28.8 on the Noometry Index.

- Canonical page: https://noometry.com/compare/gpt-5-5-pro-vs-llama-3-70b
- Last updated: 2026-10-10
- Shared benchmarks: 4

## Summary

- They share 4 benchmarks with published results for both. GPT-5.5 Pro scores higher in 3 categories and Llama 3-70B in 0 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5.5 Pro leads 84.0 to 12.8.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for GPT-5.5 Pro and 4.3% for Llama 3-70B.
- Llama 3-70B has downloadable open weights; the other is API-only.

## Snapshot

| | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 64.3 | 28.8 |
| Rank | 8 | 323 |
| Context | 1.05M | — |
| Input $/M | $30 | — |
| Output $/M | $180 | — |
| Weights | Proprietary | Open |

## Coding

- GPT-5.5 Pro: —
- Llama 3-70B: 35.8 (#218)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| BigCodeBench Instruct | — | 43.6% |
| LMArena Coding | — | 1206 |
| BigCodeBench Complete | — | 54.5% |
| HumanEval+ | — | 72% |
| MBPP+ | — | 69% |

## Agentic & Tool Use

- GPT-5.5 Pro: —
- Llama 3-70B: 21.1 (#139)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| Cybench | — | 5% |

## Reasoning

- GPT-5.5 Pro: 73.3 (#10)
- Llama 3-70B: 18.0 (#288)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| DTBench | 96% | 54.2% |
| Epoch Capabilities Index | 162.07 | 122.93 |
| ARC-AGI-2 | 84.6% | — |
| SimpleBench | 76.9% | — |
| Kagi LLM Benchmark | — | 35.1% |
| ARC-AGI-1 | 96.5% | — |
| CritPt | 30.6% | — |
| Chess Puzzles | 64% | — |
| LMArena Hard Prompts | — | 1195 |
| LMCA | 53.9% | — |
| ForecastBench | — | 57.1 |
| WinoGrande | — | 83.5% |

## Math

- GPT-5.5 Pro: 84.0 (#10)
- Llama 3-70B: 12.8 (#305)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 100% | 4.3% |
| FrontierMath (Tiers 1-3) | 87.7% | — |
| FrontierMath Tier 4 | 78% | — |
| LMArena Math | — | 1218 |
| MATH Level 5 | — | 22.6% |
| FrontierMath (Feb 2025 set) | 52.4% | — |
| FrontierMath Tier 4 (v1) | 39.6% | — |

## Knowledge

- GPT-5.5 Pro: 64.1 (#19)
- Llama 3-70B: 20.8 (#277)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| GPQA Diamond | 93.9% | 40.6% |
| LMArena Expert | — | 1149 |
| MMLU | — | 79.3% |

## Multilingual

- GPT-5.5 Pro: —
- Llama 3-70B: 33.6 (#251)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| LMArena Non-English | — | 1142 |
| LMArena Chinese | — | 1114 |
| LMArena French | — | 1232 |
| LMArena German | — | 1169 |
| LMArena Japanese | — | 1017 |
| LMArena Korean | — | 1017 |
| LMArena Russian | — | 1159 |
| LMArena Spanish | — | 1241 |

## Instruction Following

- GPT-5.5 Pro: —
- Llama 3-70B: 62.5 (#238)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| LMArena Instruction Following | — | 1194 |

## Long Context

- GPT-5.5 Pro: —
- Llama 3-70B: 35.6 (#240)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| LMArena Longer Query | — | 1174 |

## Writing & Preference

- GPT-5.5 Pro: —
- Llama 3-70B: 42.8 (#231)

| Benchmark | GPT-5.5 Pro | Llama 3-70B |
|---|---|---|
| LMArena Text | — | 1221 |
| LMArena Creative Writing | — | 1210 |
| LMArena Multi-Turn | — | 1223 |

## FAQ

### Is GPT-5.5 Pro better than Llama 3-70B?

GPT-5.5 Pro is the stronger model overall, scoring 64.3 to 28.8 on the Noometry Index.

### How many benchmarks do GPT-5.5 Pro and Llama 3-70B share?

4 benchmarks have published results for both models. GPT-5.5 Pro has 14 scored results on Noometry and Llama 3-70B has 31.