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EXAONE 4.5 33B vs Llama 3.1 Nemotron Ultra 253B v1

EXAONE 4.5 33B significantly outperforms across most benchmarks.

LG AI Research · NVIDIA · Updated for 2026

Which is better?

EXAONE 4.5 33B outperforms in 3 benchmarks (AIME 2025, GPQA, IFEval), while Llama 3.1 Nemotron Ultra 253B v1 is better at 0 benchmarks. EXAONE 4.5 33B significantly outperforms across most benchmarks.

Based on current benchmark, pricing, and model metadata for 2026.

Choose EXAONE 4.5 33B

  • you want the strongest raw capability — it leads on 3 of 3 shared benchmarks
  • you want the most recent training data — it shipped Apr 2026

Choose Llama 3.1 Nemotron Ultra 253B v1

  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

EXAONE 4.5 33B
LG AI Research
Llama 3.1 Nemotron Ultra 253B v1
NVIDIA
Benchmark wins
3 of 3
0 of 3
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—
Released
Apr 2026
Apr 2025
License
Proprietary
Llama 3.1 Community License

Performance Benchmarks

Comparative analysis across standard metrics

3 benchmarks

EXAONE 4.5 33B outperforms in 3 benchmarks (AIME 2025, GPQA, IFEval), while Llama 3.1 Nemotron Ultra 253B v1 is better at 0 benchmarks.

EXAONE 4.5 33B significantly outperforms across most benchmarks.

Wed Aug 26 2026 • llm-stats.com

Arena Performance

Playground indexes and blind preference scores

Model Size

Parameter count comparison

220.0B diff

Llama 3.1 Nemotron Ultra 253B v1 has 220.0B more parameters than EXAONE 4.5 33B, making it 666.7% larger.

LG AI Research
EXAONE 4.5 33B
33.0Bparameters
NVIDIA
Llama 3.1 Nemotron Ultra 253B v1
253.0Bparameters
33.0B
EXAONE 4.5 33B
253.0B
Llama 3.1 Nemotron Ultra 253B v1

Input Capabilities

Supported data types and modalities

EXAONE 4.5 33B supports multimodal inputs, whereas Llama 3.1 Nemotron Ultra 253B v1 does not.

EXAONE 4.5 33B can handle both text and other forms of data like images, making it suitable for multimodal applications.

EXAONE 4.5 33B

Text
Images
Audio
Video

Llama 3.1 Nemotron Ultra 253B v1

Text
Images
Audio
Video

License

Usage and distribution terms

EXAONE 4.5 33B is licensed under a proprietary license, while Llama 3.1 Nemotron Ultra 253B v1 uses Llama 3.1 Community License.

License differences may affect how you can use these models in commercial or open-source projects.

EXAONE 4.5 33B

Proprietary

Closed source

Llama 3.1 Nemotron Ultra 253B v1

Llama 3.1 Community License

Open weights

Release Timeline

When each model was launched

EXAONE 4.5 33B was released on 2026-04-09, while Llama 3.1 Nemotron Ultra 253B v1 was released on 2025-04-07.

EXAONE 4.5 33B is 12 months newer than Llama 3.1 Nemotron Ultra 253B v1.

EXAONE 4.5 33B

Apr 9, 2026

4 months ago

1.0yr newer
Llama 3.1 Nemotron Ultra 253B v1

Apr 7, 2025

1.4 years ago

Knowledge Cutoff

When training data ends

EXAONE 4.5 33B has a knowledge cutoff of 2024-12-01, while Llama 3.1 Nemotron Ultra 253B v1 has a cutoff of 2023-12-01.

EXAONE 4.5 33B has more recent training data (up to 2024-12-01), making it potentially better informed about events through that date compared to Llama 3.1 Nemotron Ultra 253B v1 (2023-12-01).

EXAONE 4.5 33B

Dec 2024

1 yr newer
Llama 3.1 Nemotron Ultra 253B v1

Dec 2023

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against EXAONE 4.5 33B and Llama 3.1 Nemotron Ultra 253B v1 side-by-side, then vote on the output you prefer.

EXAONE 4.5 33B
✓ Preferred
Llama 3.1 Nemotron Ultra 253B v1
Open in Playground

FAQ

Common questions about EXAONE 4.5 33B vs Llama 3.1 Nemotron Ultra 253B v1.

Which is better, EXAONE 4.5 33B or Llama 3.1 Nemotron Ultra 253B v1?

EXAONE 4.5 33B significantly outperforms across most benchmarks. EXAONE 4.5 33B is made by LG AI Research and Llama 3.1 Nemotron Ultra 253B v1 is made by NVIDIA. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does EXAONE 4.5 33B compare to Llama 3.1 Nemotron Ultra 253B v1 in benchmarks?

EXAONE 4.5 33B scores AIME 2025: 92.9%, AIME 2026: 92.6%, IFEval: 89.6%, AI2D: 89.0%, MathVista-Mini: 85.0%. Llama 3.1 Nemotron Ultra 253B v1 scores MATH-500: 97.0%, IFEval: 89.5%, GPQA: 76.0%, BFCL v2: 74.1%, AIME 2025: 72.5%.

What are the main differences between EXAONE 4.5 33B and Llama 3.1 Nemotron Ultra 253B v1?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs Llama 3.1 Community License). See the full comparison above for benchmark-by-benchmark results.

Who makes EXAONE 4.5 33B and Llama 3.1 Nemotron Ultra 253B v1?

EXAONE 4.5 33B is developed by LG AI Research and Llama 3.1 Nemotron Ultra 253B v1 is developed by NVIDIA.

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