# Mistral Medium 3.5 128B

> A 128B parameter Mixture-of-Experts model balancing capability and efficiency, with strong performance on reasoning, coding, and multilingual tasks. Served via NVIDIA NIM with fast inference and optimized latency.

**ID**: `mistralai/mistral-medium-3.5-128b`  
**Creator**: Mistral AI  
**Category**: text  
**Context**: 131K tokens  
**Pricing**: $1.50 / $7.50 per 1M · billed by your provider (BYOK)  
**Released**: 2026-06-04  
**Web page**: https://anyrouter.dev/model/mistralai/mistral-medium-3.5-128b

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

**Tokenizer**: Mistral

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

**Supported parameters**: max_tokens, temperature, top_p, stop, tools, tool_choice, response_format

## 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": "mistralai/mistral-medium-3.5-128b",
  "messages": [
    {
      "role": "user",
      "content": "Say hi in 3 words."
    }
  ]
}'
```

## Providers

| Provider | Input | Output |
| --- | --- | --- |
| mistral-byok | $1.50/M (list) | $7.50/M (list) |
| openrouter-byok | $1.50/M (list) | $7.50/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://build.nvidia.com/mistralai/mistral-medium-3.5-128b