Decision modelOpen source
Decider 2B
Mapika
- Released
- -
- Data date
- September 24, 2026
- Model class
- Access
Decider 2B occupies the compact middle of the text-based Decider family. The 1.9-billion-parameter checkpoint processes typed questions over a state and distributes probability across 2 to 255 options. Its context window covers 32,000 tokens. The readout happens in one pass, with the answer schema defined before the call.
In the text-based line, Decider 2B sits between Decider 0.8B and Decider 4B.
Specifications and access
| Specification | Value and source |
|---|---|
| Model class | Typed decision modelSource |
| Access | LocalSource |
| Model ID | Mapika/decider-2bSource |
| Input | Text and typed questionsSource |
| Output | Structured probabilities, no text generationSource |
| Result | Choice, Noul and Score as probability distributionsSource |
| Parameters | 1.9 billionSource |
| Context window | 32,000 tokensSource |
| License | Apache-2.0Source |
| Scope | Local readout without autoregressive text generation.Source |
| Notes | The model is intended for structured decisions, not multi-step text answers.Source |
| Base model | Qwen3.5-2B-BaseSource |
| Choice options | 2-255 per questionSource |
Popularity
63.8 / 100
Sources and data date
| Type | Evidence and data date |
|---|---|
| Additional source | Decider repository (retrieved September 24, 2026) · Decider repository · Editorial description reviewed October 2, 2026 |
| Additional source | Decider model card (retrieved September 24, 2026) · Decider model card · Editorial description reviewed October 2, 2026 |
| Additional source | Decider 2B checkpoint (retrieved September 24, 2026) · Decider 2B checkpoint · Editorial description reviewed October 2, 2026 |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Creative Commons Attribution 4.0 |