# Grok 4.5

> xAI's current flagship. 500K context, vision, file input, reasoning; the rate doubles above 200K prompt tokens.

Human version: https://kymaapi.com/models/grok-4.5
Live JSON: `GET https://kymaapi.com/v1/models` (no auth required)

## Facts

- **Model ID**: `grok-4.5` — pass this as `model` in the request body
- **Creator**: xAI
- **Released**: 2026-07-08
- **Context window**: 500K tokens
- **Max output**: 8K tokens per response — a hard ceiling, not a default
- **Price**: $2.70 in / $8.10 out per 1M
- **Capabilities**: tools, vision, reasoning

## Call it

```bash
curl https://kymaapi.com/v1/chat/completions \
  -H "Authorization: Bearer $KYMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "grok-4.5", "messages": [{"role": "user", "content": "Hello"}]}'
```

## See also

- All models: https://kymaapi.com/models.md
- Pricing: https://kymaapi.com/pricing.md
- Other models by xAI: https://kymaapi.com/models?q=xAI