- Third-party

Union Alpha is a multimodal model designed for research, coding, and agentic workflows. It delivers frontier-level performance across diverse general-purpose tasks.

Paris

System Guidance — Set a helpful system role before asking a question.

An API (Application Programming Interface) is a set of rules that lets different software programs communicate with each other. For example, a weather app can use an API to request the latest forecast from a weather service.

Coding Example — Ask for a short coding example.

```javascript

function reverseString(str) {

return [...str].reverse().join("");

}

// Example call:

console.log(reverseString("hello")); // "olleh"

```Follow-up Conversation — Continue a short conversation with prior assistant context.

Prioritize **location over amenities** for a short weekend—you’ll get more out of your trip if you spend less time in transit. - **Your main activity:** Stay near the beach for a relaxing getaway, or near the center for restaurants, sightseeing, and nightlife. - **Walkability and transport:** Look for cafés and dinner options within walking distance, plus easy access to the airport or train station. If you’re driving, check parking costs. - **Total

Creative Writing — Generate a compact piece of creative writing.

The weary day sank softly out of sight, And left me searching shadows for a spark. Then one small star unfolded into light— Enough to lead me gently through the dark.

▶messages[]

arrayrequiredtemperature

numberminimum: 0maximum: 2max_tokens

numberexclusiveMinimum: 0max_completion_tokens

numberexclusiveMinimum: 0top_p

numberminimum: 0maximum: 1frequency_penalty

numberminimum: -2maximum: 2presence_penalty

numberminimum: -2maximum: 2stream

boolean▶stream_options{}

object▶tools[]

arraytool_choice

response_format

▶modalities[]

array▶audio{}

objectreasoning_effort

stringOptional reasoning control; availability and accepted values are model-dependent.id

stringobject

stringcreated

numbermodel

string▶choices[]

array▶usage{}

object