GPT-6 Astra Pro

Name: OpenAI GPT-6 Astra Pro
Price: 10 USD
Availability: InStock
Author: OpenAI

openai/gpt-6-astra-pro

GPT-6 Astra Pro is the same GPT-6 Astra model, OpenAI's most capable GPT-6 tier, served in OpenAI's pro reasoning mode rather than as different weights. In pro mode the model does more work on each request before returning one final answer, which OpenAI suggests for complex optimization, high-value coding or review, and deep analysis. Expect higher latency and token usage than standard Astra, so reserve it for problems where a marginal quality gain changes the outcome.

Use in agent Get API key

Input price: $10.00USD / 1M tokens
Output price: $50.00USD / 1M tokens
Context window: 1.1M
Max output: 128K

Production route

Try the model

Playground

Open playground

Input⌘ / Ctrl + Enter

Try a prompt

Prompt

Image URL or upload

Upload

1.1M context128K max outputVision

Input$10.00/MOutput$50.00/MCache read$1.00/MCache write$12.50/M

OutputReady

Your response will appear here

Choose an example or write a prompt, then click Run.

Model card

Specifications

Pricing

Input: $10 / 1M tokens
Output: $50 / 1M tokens
Cache read: $1 / 1M tokens
Cache write: $12.50 / 1M tokens

Context & modalities

Context window: 1,050,000 tokens
Max output: 128,000 tokens
Input: Text, image
Output: Text

Capabilities

Chat: Supported
Vision: Supported
Reasoning: Supported
Structured output: Supported
Function calling: Supported
Audio input: Not supported

Access

Provider: OpenAI
Model ID: openai/gpt-6-astra-pro
Execution: sync
Base URL: https://api.sandbase.ai
API: Responses API
Endpoint: /v1/responses
API: Chat Completions API
Endpoint: /v1/chat/completions

Start building

Send your first request

Choose either supported API with unified authentication and usage tracking.

Production API

Responses API endpoint

https://api.sandbase.ai/v1/responses

Model ID

openai/gpt-6-astra-pro

# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/responses" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "openai/gpt-6-astra-pro",
  "input": "Hello",
  "max_output_tokens": 2048
}
SANDBASE_JSON
)
printf '%s\n' "$result"

Choose your model

Compare models

All language models

Model	Context	Input / 1M	Output / 1M	Released
GPT-6 Astra ProThis model `OpenAI`	1.1M	$10.00	$50.00	Sep 4, 2026
GPT-6.1 Sol Pro `OpenAI`	1.1M	$2.00	$10.00	Sep 29, 2026
GPT-6.1 Sol `OpenAI`	1.1M	$2.00	$10.00	Sep 29, 2026
GPT-6 Luna Pro `OpenAI`	1.1M	$0.10	$0.50	Sep 22, 2026
GPT-6 Luna `OpenAI`	1.1M	$0.10	$0.50	Sep 22, 2026
GPT-6 Sol Pro `OpenAI`	1.1M	$2.00	$10.00	Sep 22, 2026

Questions

FAQ

How do I call OpenAI GPT-6 Astra Pro through SandBase?

Create a SandBase API key, then send requests with the model ID "openai/gpt-6-astra-pro" to Responses API (/v1/responses) or Chat Completions API (/v1/chat/completions) at https://api.sandbase.ai. The request examples on this page show the exact payload.

How much does OpenAI GPT-6 Astra Pro cost?

$10 per 1M input tokens and $50 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.

What is the context window of OpenAI GPT-6 Astra Pro?

1.1M tokens of context, with up to 128K output tokens per response.

Which features does OpenAI GPT-6 Astra Pro support?

OpenAI GPT-6 Astra Pro supports vision (image input), reasoning, function calling, structured output. See Specifications above for the full list.

Do I need a separate OpenAI account?

No. One SandBase API key and balance gives you access to OpenAI GPT-6 Astra Pro and the other models in the catalog; you do not need to sign up with OpenAI separately.