# GPT-6 Astra

> O mais novo carro-chefe da OpenAI — o topo da linha GPT-6.

Canonical: https://routemux.com/pt-BR/openai/gpt-6-astra
Provider: OpenAI

## Key facts

| Field | Value |
| --- | --- |
| Model ID | openai/gpt-6-astra |
| Official model ID | gpt-6-astra |
| Context window | 1.1M |
| Max output | 128K |
| Input modalities | text, image |
| Output modalities | text |
| Capabilities | Vision, Reasoning, Tool Calling, Coding, Cache, Paid Cache Write, Strip Responses Summary Input |
| Upstream release | 2026-09-03 |
| Availability | available |

## Pricing

- RouteMux input: $1 per 1M tokens
- RouteMux output: $5 per 1M tokens
- Official input: $10 per 1M tokens
- Official output: $50 per 1M tokens
- Cache read: $0.1 per 1M tokens
- Cache write: $1.25 per 1M tokens
- Saving vs official: 90%
- Official price source: openai_x0.10, verified 2026-09-05

Billing is prepaid wallet, charged per successful request only.

## API access

Base URL: https://api.routemux.com

Supported protocols:

- openai_chat
- openai_responses
- anthropic_messages

Aliases that also route here: gpt-6, openai/gpt-6