# Strands Decider 2B

> Strands Decider 2B is AWS Strands Labs' small open-weight decision model: send application state and typed questions (noul / choice / score) and get calibrated probabilities back in one forward pass — it returns answers with confidence scores, not generated chat text, and produces no free-form output. Call POST /api/v1/decisions (POST /api/v1/systemone is the same handler).

**ID**: `strandsagents/strands-decider-2b`  
**Creator**: strandsagents  
**Category**: text  
**Context**: 4K tokens  
**Pricing**: BYOK — billed by your provider  
**Released**: 2026-10-01  
**Web page**: https://anyrouter.dev/model/strandsagents/strands-decider-2b

**Input modalities**: text  
**Output modalities**: text  

**Capabilities**: systemone

**Supported parameters**: state, model, questions

## Usage

**Endpoint**: `POST https://anyrouter.dev/api/v1/decisions`

```bash
curl https://anyrouter.dev/api/v1/decisions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "state": "Help! My payouts have been failing for 3 days.",
  "model": "strandsagents/strands-decider-2b",
  "questions": {
    "is_urgent": {
      "type": "noul",
      "instructions": "Does this convey urgency?"
    }
  }
}'
```

Decisions is not chat: send `state` and typed `questions` (noul / choice / score). Requires a BYOK key for TypeSafe, LLM Gateway, Vercel AI Gateway, AIHubMix, AutoJev, or Fastino.

## Providers

| Provider | Input | Output |
| --- | --- | --- |
| strands-decider-byok | BYOK — billed by your provider | — |

BYOK routes are billed by your own provider key — AnyRouter charges $0. Rates marked (list) are the provider's published list price.

## Source

- Upstream docs: https://strandsagents.com/blog/introducing-strands-decider/