# ERNIE 5.5 Flash Preview

> ERNIE 5.5 Flash Preview is the latest model in Baidu's ERNIE family, with gains in coding, agentic tasks, knowledge work and deep research. It is a mixture-of-experts model with 280B total and 14B active parameters, a 1M-token context window and tool calling, structured outputs and reasoning effort control.

**ID**: `baidu/ernie-5.5-flash-preview`  
**Creator**: baidu  
**Category**: text  
**Context**: 1M tokens  
**Pricing**: $0.28 / $1.13 per 1M · billed by your provider (BYOK)  
**Released**: 2026-11-10  
**Web page**: https://anyrouter.dev/model/baidu/ernie-5.5-flash-preview

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

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

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

## 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": "baidu/ernie-5.5-flash-preview",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'
```

## Providers

| Provider | Input | Output |
| --- | --- | --- |
| openrouter-byok | $0.28/M (list) | $1.13/M (list) |

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://openrouter.ai/baidu/ernie-5.5-flash-preview