GPT-6 Astra Pro (batch)

OpenAI· released 4 Sept 2026

openai/gpt-6-astra-pro:batch

Input / 1M tokens: $5
Output / 1M tokens: $25

Context window1.1M tokens

Longest answer: 128K tokens

reads filereads imagereads texttool callingvisionreasoning

About

GPT-6 Astra Pro (batch) is an OpenAI model using reasoning.mode set to pro. According to the listed summary, it is the same underlying model as GPT-6 Astra, with pro mode intended to provide higher-quality responses on complex tasks; the summary also notes that pro mode spends far more. It accepts files, images, and text, and produces text. Tools, vision, and reasoning are supported. The model provides a 1,050,000-token context window and a maximum output of 128,000 tokens. OpenAI released and created it on September 4, 2026. Its model ID is openai/gpt-6-astra-pro:batch, with an official page on OpenRouter. Input pricing is $5 per 1 million tokens, and output pricing is $25 per 1 million tokens.

Who it is for

It suits teams needing pro reasoning for complex tasks with file, image, and text inputs. Its large context window fits applications that pass extensive material in one request.

What is good

Pro reasoning mode for complex tasks
1,050,000-token context window
Accepts files, images, and text
Tools, vision, and reasoning supported
128,000-token maximum output

What to know first

Pro mode spends far more
Output costs $25 per 1M tokens
Produces text only

Verdict

GPT-6 Astra Pro (batch) combines pro reasoning with a very large context window and multimodal input support. Its high per-token prices make cost planning central to deployment.

Details

Lab: OpenAIopenrouter.ai · 3 Oct 2026
Context: 1,050Kopenrouter.ai · 3 Oct 2026
Input price: $5 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $25 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 128,000 tokensopenrouter.ai · 3 Oct 2026
Inputs: file, image, textopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/openai/gpt-6-astra-pro:batch· checked 3 Oct 2026