GPT-6 Astra Text generation API

openai / gpt-6-astra

An OpenAI long-context reasoning model for complex analysis, coding, and agent workflows.

Use openai/gpt-6-astra through the sjolt LLM API.

Model IDopenai/gpt-6-astra
Pricing

Token rates

Input
$3 / 1M tokens
Cache read
$0.3 / 1M tokens
Cache write
$3.75 / 1M tokens
Output
$15 / 1M tokens
GPT-6 Astraopenai/gpt-6-astra

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Model overview

GPT-6 Astra for long-context reasoning

Use a long-context reasoning model for complex analysis, coding, and agent workflows.

GPT-6 Astra text generation model cover
01 · Text generation

Work across long context

Use up to 1,050,000 tokens of context for large repositories, documents, and multi-step work.

  • Send one required user prompt with optional system instructions.
  • Review the exact non-streaming OpenAI Chat request before running it.
  • Inspect assistant text, finish reason, response ID, and token usage together.
GPT-6 Astra long-context text generation model cover
02 · Request controls

Control reasoning depth

Select low, medium, high, xhigh, or max reasoning effort to match the task.

User promptSystem promptNon-streaming response
GPT-6 Astra API compatibility model cover
03 · API integration

Use familiar APIs

Connect through OpenAI-compatible Chat Completions and Responses.

  • Compare enabled DeepSeek text models in one place.
  • Copy the request preview to keep application requests aligned with the Playground.
  • Handle assistant responses and provider availability states in the same workflow.

Model characteristics

Better for creative validation than isolated one-off generation.

01

Workflow focus

Complex analysis, coding, and long-context agent workflows.

02

Context window

Up to 1,050,000 context tokens.

03

Maximum API output

Up to 128,000 tokens.

04

Reasoning control

Reasoning stays enabled with low, medium, high, xhigh, and max effort levels; the Playground defaults to medium.

FAQ

These are the first questions to answer when evaluating this model.

What is GPT-6 Astra suited to?

It is suited to complex analysis, coding, and long-context agent workflows.

Can I disable reasoning?

No. Select low, medium, high, xhigh, or max effort instead.

How much context and output does the API support?

The API supports up to 1,050,000 context tokens and up to 128,000 output tokens.

Can I set an output token limit?

No. The SJProxyAPI route removes caller-selected output limits before forwarding the request.

Which API formats can I use?

sjolt exposes GPT-6 Astra through OpenAI-compatible Chat Completions and Responses.