# Llama 3.1-70B vs Qwen3.5 Plus

> Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 29.6 on the Noometry Index. Llama 3.1-70B costs 2.3× less per token, which makes it the better buy when Qwen3.5 Plus's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/llama-3-1-70b-vs-qwen3-5-plus
- Last updated: 2026-10-12
- Shared benchmarks: 5

## Summary

- They share 5 benchmarks with published results for both. Llama 3.1-70B scores higher in 0 categories and Qwen3.5 Plus in 4 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Qwen3.5 Plus leads 49.6 to 13.5.
- The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 3.6% for Llama 3.1-70B and 86.7% for Qwen3.5 Plus.
- Llama 3.1-70B is cheaper at $0.40 / $0.40 per million input/output tokens, against $0.40 / $2.40 for Qwen3.5 Plus.
- Qwen3.5 Plus accepts more context: 1M tokens versus 128K.
- Llama 3.1-70B has downloadable open weights; the other is API-only.

## Snapshot

| | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| Provider | Meta | Alibaba (Qwen) |
| Noometry Index | 29.6 | 42.9 |
| Rank | 308 | 106 |
| Context | 128K | 1M |
| Input $/M | $0.40 | $0.40 |
| Output $/M | $0.40 | $2.40 |
| Weights | Open | Proprietary |

## Coding

- Llama 3.1-70B: 30.3 (#296)
- Qwen3.5 Plus: —

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| WeirdML | 9% | — |
| BigCodeBench Instruct | 46.1% | — |
| LMArena Coding | 1260 | — |
| BigCodeBench Complete | 54.8% | — |
| ALE-Bench | — | 621.92 |

## Agentic & Tool Use

- Llama 3.1-70B: 25.1 (#112)
- Qwen3.5 Plus: —

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| TheAgentCompany | 6.9% | — |
| BALROG | 27.9% | — |
| Vending-Bench 2 | — | 0.54 |

## Reasoning

- Llama 3.1-70B: 21.6 (#220)
- Qwen3.5 Plus: 32.8 (#74)

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| DTBench | 60% | 80.5% |
| LMCA | 14.8% | 36.4% |
| Epoch Capabilities Index | 125.92 | 146.78 |
| Chess Puzzles | — | 22% |
| LMArena Hard Prompts | 1241 | — |
| Mystery Game Puzzles | — | 17% |

## Math

- Llama 3.1-70B: 13.5 (#304)
- Qwen3.5 Plus: 49.6 (#61)

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 3.6% | 86.7% |
| Omni-MATH | 21% | — |
| LMArena Math | 1252 | — |
| MATH Level 5 | 36.7% | — |
| FrontierMath (Feb 2025 set) | — | 21% |
| FrontierMath Tier 4 (v1) | — | 2.1% |

## Knowledge

- Llama 3.1-70B: 24.2 (#269)
- Qwen3.5 Plus: 46.0 (#83)

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| GPQA Diamond | 44.2% | 84.8% |
| SimpleQA Verified | — | 25.4% |
| MMLU-Pro | 65.3% | — |
| Vectara Hallucination Rate | — | 10.7% |
| GPQA (HELM) | 42.6% | — |
| LMArena Expert | 1209 | — |
| MMLU | 80.1% | — |

## Multilingual

- Llama 3.1-70B: 38.8 (#225)
- Qwen3.5 Plus: —

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| LMArena Non-English | 1219 | — |
| LMArena Chinese | 1215 | — |
| LMArena French | 1261 | — |
| LMArena German | 1222 | — |
| LMArena Japanese | 1132 | — |
| LMArena Korean | 1140 | — |
| LMArena Russian | 1234 | — |
| LMArena Spanish | 1253 | — |

## Instruction Following

- Llama 3.1-70B: 65.3 (#223)
- Qwen3.5 Plus: —

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| IFEval | 82.1% | — |
| LMArena Instruction Following | 1231 | — |

## Long Context

- Llama 3.1-70B: 37.6 (#214)
- Qwen3.5 Plus: 43.0 (#113)

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| CL-bench | — | 19.8% |
| CL-bench Life | — | 12.4% |
| LMArena Longer Query | 1241 | — |

## Writing & Preference

- Llama 3.1-70B: 35.4 (#267)
- Qwen3.5 Plus: —

| Benchmark | Llama 3.1-70B | Qwen3.5 Plus |
|---|---|---|
| LMArena Text | 1261 | — |
| LMArena Creative Writing | 1232 | — |
| EQ-Bench Creative Writing | 784 | — |
| WildBench | 75.8% | — |
| LMArena Multi-Turn | 1256 | — |

## FAQ

### Is Llama 3.1-70B better than Qwen3.5 Plus?

Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 29.6 on the Noometry Index. Llama 3.1-70B costs 2.3× less per token, which makes it the better buy when Qwen3.5 Plus's lead doesn't matter for your workload.

### Which is cheaper, Llama 3.1-70B or Qwen3.5 Plus?

Llama 3.1-70B is cheaper. It lists at $0.40 per million input tokens and $0.40 per million output tokens; Qwen3.5 Plus lists at $0.40 and $2.40.

### Which has the bigger context window?

Qwen3.5 Plus does, with 1M tokens against 128K.

### How many benchmarks do Llama 3.1-70B and Qwen3.5 Plus share?

5 benchmarks have published results for both models. Llama 3.1-70B has 35 scored results on Noometry and Qwen3.5 Plus has 15.