# Fledge Alpha

> Fledge Alpha is a free-tier stealth preview reasoning model with text and image input and tool use. It always reasons with adjustable effort (low, high, or max) over a 1M-token context window. No lab, specifications, or benchmarks are published for it yet.

**ID**: `stealth/fledge-alpha`  
**Creator**: stealth  
**Category**: text  
**Context**: 1M tokens  
**Input**: $0  
**Output**: $0  
**Released**: 2026-10-01  
**Web page**: https://anyrouter.dev/model/stealth/fledge-alpha

**Input modalities**: text, image  
**Output modalities**: text  

**Capabilities**: chat, streaming, reasoning, function-calling, vision

**Supported parameters**: max_tokens, temperature, top_p, tools, tool_choice, reasoning, include_reasoning, reasoning_effort

## Usage

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

```bash
curl https://anyrouter.dev/api/v1/chat/completions \
  -H "Authorization: Bearer $ANYROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "stealth/fledge-alpha",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'
```

## Providers

| Provider | Input | Output |
| --- | --- | --- |
| opencode-zen | $0 | $0 |
| opencode-zen-byok | $0 | $0 |

## Source

- Upstream docs: https://opencode.ai/data/unknown/fledge-alpha