SEA-LION Models by AI Singapore
Last refreshed 2026-06-03. Next refresh: weekly.
Details
Capabilities
About
The SEA-LION family of large language models is an open-source initiative by AI Singapore aimed at enhancing the understanding of Southeast Asian languages and cultures in the global AI landscape. These models prioritize linguistic diversity by representing over 13 languages from the region, including major ones like English, Chinese, and Indonesian, as well as lesser-studied languages like Javanese and Sudanese. The latest version, SEA-LION v3, incorporates Google's Gemma 2 architecture and contains 9 billion parameters trained on an extensive dataset of 200 billion tokens. This effort is part of a collaboration with Sony Research to refine the model's accuracy, particularly for languages like Tamil, ensuring representation and equity in language processing technologies worldwide.
Decision facts
- Best fit
- vision and multimodal workJSON / Tool usestructured outputs
- Capability starting point
- SEA-LION V4 27B Instruct with 128k context and JSON / Tool use, structured outputs, and multimodal inputs
- Lowest tracked input
- Not tracked
- Closest related family
- Claude 3
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
Use when the workload needs 128k context, 27B parameters, and JSON / Tool use.
Use when the workload needs 4k context and 7B parameters.
Use when the workload needs 2k context and 3B parameters.
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| SEA-LION V4 27B Instruct | Use when the workload needs 128k context, 27B parameters, and JSON / Tool use. | 2025-08 | 128k context27B parametersJSON / Tool use | Current |
| SEA-LION 7B | Use when the workload needs 4k context and 7B parameters. | 2024-09 | 4k context7B parameters | Current |
| SEA-LION 3B | Use when the workload needs 2k context and 3B parameters. | 2024-09 | 2k context3B parameters | Current |
Release Timeline
2 release groupsSpecifications(3 models)
| Model | Released | Context | Parameters | Vision | Multimodal | JSON / Tool use | Structured Outputs |
|---|---|---|---|---|---|---|---|
| SEA-LION V4 27B Instruct | 2025-08 | 128k | 27B | Yes | Yes | Yes | Yes |
| SEA-LION 7B | 2024-09 | 4k | 7B | No | No | No | No |
| SEA-LION 3B | 2024-09 | 2k | 3B | No | No | No | No |
