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GPT-6 Astra Pro

OpenAI

GPT-6 Astra Pro is the same underlying model as [GPT-6 Astra](https://openrouter.ai/openai/gpt-6-astra), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. Learn more in OpenAI's docs: https://developers.openai.com/api/docs/guides/reasoning#

Updated 31 min ago · first seen 11 Sept 2026

model_01M294WVNDR9EFC8WGFVTPMPA0

Context
1.05M tokens
T2 · 31 min ago
Released
4 Sept 2026
T2 · 31 min ago

Specification

Release date
4 Sept 2026

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Context window
1.05M tokens

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Max output
128K tokens

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Modalities
image, text

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Input modalities
image, text

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Output modalities
text

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Tokenizer
GPT

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

File input
Yes

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Openrouter id
openai/gpt-6-astra-pro

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Supported parameters
include_reasoning, max_completion_tokens, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, tool_choice, tools

Source:OpenRouter public model & pricing listingT2observed 31 min agomedium

Each value shows its source, tier and observation time. Conflicting claims are kept side by side and flagged — never averaged. How AI Atlas records facts →

Provenance

Attributed facts

15

Source tiers

T215

Freshest observation

31 min ago

Conflicts

None