Yi Coder Models by 01.AI
6 models2024Up to 128K ctx
Last refreshed 2026-10-09. Next refresh: weekly.
Details
Researcher01.AI
LicenseApache 2.0OSI-approved
Commercial usePermitted
Models6
Released2024
Max context128K
About
Yi-Coder is a series of open-source code language models that delivers state-of-the-art coding performance with fewer than 10 billion parameters.
Decision facts
- Best fit
- coding
- Capability starting point
- Yi Coder 1.5 34B with 128K context
- Lowest tracked input
- Not tracked
- Closest related family
- Agents-A1
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
6 in view
Yi Coder 1.5 34BCurrent
Use when the workload needs 128K context and 34 parameters.
2024-05128K context34 parameters
Yi Coder 1.5 9BCurrent
Use when the workload needs 128K context and 9 parameters.
2024-05128K context9 parameters
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| Yi Coder 1.5B | Use when the workload needs 1.5B parameters. | 2024-11 | 1.5B parameters | Current |
| Yi Coder 1.5B Chat | Use when the workload needs 1.5B parameters. | 2024-11 | 1.5B parameters | Current |
| Yi Coder 9B | Use when the workload needs 9B parameters. | 2024-11 | 9B parameters | Current |
| Yi Coder 9B Chat | Use when the workload needs 9B parameters. | 2024-11 | 9B parameters | Current |
| Yi Coder 1.5 34B | Use when the workload needs 128K context and 34 parameters. | 2024-05 | 128K context34 parameters | Current |
| Yi Coder 1.5 9B | Use when the workload needs 128K context and 9 parameters. | 2024-05 | 128K context9 parameters | Current |
Release Timeline
2 release groups2024-11
4 current
Yi Coder 1.5B
Current1.5B parameters
Yi Coder 1.5B Chat
Current1.5B parameters
Yi Coder 9B
Current9B parameters
Yi Coder 9B Chat
Current9B parameters
2024-05
2 current
Yi Coder 1.5 34B
Current128K context34 parameters
Yi Coder 1.5 9B
Current128K context9 parameters
Specifications(6 models)
| Model | Released | Context | Parameters |
|---|---|---|---|
| Yi Coder 1.5B | 2024-11 | — | 1.5B |
| Yi Coder 1.5B Chat | 2024-11 | — | 1.5B |
| Yi Coder 9B | 2024-11 | — | 9B |
| Yi Coder 9B Chat | 2024-11 | — | 9B |
| Yi Coder 1.5 34B | 2024-05 | 128K | 34 |
| Yi Coder 1.5 9B | 2024-05 | 128K | 9 |