Model Library
LG AI ResearchReleased July 15, 2025Exaone 4.0 1.2B
LG AI Research · Released July 15, 2025
Intelligence score
3
At a glance
- Intelligence
- 3
- Speed
- —
- Latency
- —
- Input price
- Not published
- Output price
- Not published
- Context window
- 64Ktokens
- Parameters
- 1.28billions
Summary
Comparison summary
Exaone 4.0 1.2B (Reasoning) scores 3 (estimated) on the Artificial Analysis Intelligence Index, placing it below average among other open weight models of similar size (median: 4).
Specifications
Technical specifications
| Model name | Exaone 4.0 1.2B |
|---|---|
| Provider | LG AI Research |
| Release date | July 15, 2025 |
| Intelligence score | 3 |
| Speed | — |
| Latency (TTFT) | — |
| Input price | Not published |
| Output price | Not published |
| Context window | 64,000 tokens |
| Parameters | 1.28B |
| Reasoning | Yes |
| Input modalities | text |
| Output modalities | — |
| Open weights | Yes |
| License | EXAONE AI Model License Agreement 1 |
| API availability | — |
| Source | Model Intelligence legacy profile: exaone-4-0-1-2b-reasoning |
FAQ · 15
Frequently asked questions
Exaone 4.0 1.2B (Reasoning) was released on July 15, 2025.
Exaone 4.0 1.2B (Reasoning) was created by LG AI Research.
Exaone 4.0 1.2B (Reasoning) scores 3 (estimated) on the Artificial Analysis Intelligence Index, placing it below average among other open weight models of similar size (median: 4).
Yes, Exaone 4.0 1.2B (Reasoning) is a reasoning model. It uses extended thinking or chain-of-thought reasoning to work through complex problems before providing an answer.
Exaone 4.0 1.2B (Reasoning) supports text input.
Exaone 4.0 1.2B (Reasoning) supports text output.
No, Exaone 4.0 1.2B (Reasoning) does not support image input. It can only process text.
No, Exaone 4.0 1.2B (Reasoning) is not multimodal. It only supports text input.
Exaone 4.0 1.2B (Reasoning) has a context window of 64k tokens. This determines how much text and conversation history the model can process in a single request.
Yes, Exaone 4.0 1.2B (Reasoning) is open weights. The model weights are publicly available and can be downloaded for self-hosting.
Exaone 4.0 1.2B (Reasoning) has 1.28 billion parameters.
Exaone 4.0 1.2B (Reasoning) is released under the EXAONE AI Model License Agreement 1.2 - NC license. Commercial use requires a separate license agreement.
Exaone 4.0 1.2B (Reasoning) achieves a score of 3 on the Artificial Analysis Intelligence Index. This composite benchmark evaluates models across reasoning, knowledge, mathematics, and coding.
Exaone 4.0 1.2B (Reasoning) is an open weights model that can be self-hosted.
Exaone 4.0 1.2B (Reasoning) is an open weights model that can be downloaded and self-hosted.