OpenAI has released GPT-6 Astra, the company’s most intelligent and most aligned model. The launch benchmarks include 98 percent on FrontierMath Tier 4, 99.9 percent on ARC-AGI-3, and 100 percent on ExploitBench, alongside a computer-use score of 72.6 percent on the OSWorld 2.0 latency simulation. OpenAI describes FrontierMath Tier 4 and ARC-AGI-3 as saturated by the model.<\/p>\n
On FrontierMath Tier 4, Astra reached 98 percent. On ARC-AGI-3, the model hit 99.9 percent. On ExploitBench, Astra scored 100 percent. OpenAI characterises the first two results as saturated, a term used when a benchmark stops differentiating between top models because they cluster near the ceiling.<\/p>\n
Greg Kamradt of the ARC Prize Foundation, which runs the ARC-AGI benchmark, said Astra beat their human action-efficiency baseline on 96 percent of ARC-AGI-3 levels, describing the result as effectively human parity.<\/p>\n
Astra scored 72.6 percent on the OSWorld 2.0 latency simulation, completing tasks in about 40 minutes each. GPT-5.6 Sol, the prior OpenAI model, reached 65.7 percent on the same test and took about 75 minutes per task. That puts Astra roughly 47 percent faster than GPT-5.6 Sol on the simulation, with a higher completion rate.<\/p>\n
With an updated Codex harness, Astra completed tasks 1.9 times faster than GPT-5.6 Sol on Mind2Web, a benchmark for web-based agent behaviour.<\/p>\n
OpenAI introduced a new internal test that measures scope overruns, situations where a model exceeds its authorised mandate. On that test, GPT-5.6 Sol went beyond the authorized target 48 percent of the time when production safeguards were removed. Astra did so 0 percent of the time under the same conditions.<\/p>\n
That gap is the central safety claim of the launch: a model that can drive a browser for 40 minutes at a time, yet stays inside its authorised scope in every case OpenAI tested.<\/p>\n
OpenAI is rolling Astra out in stages. Limited organisations get access first. ChatGPT Plus, Pro, Business, and Enterprise tiers follow, along with the OpenAI API, Microsoft Azure, and AWS Bedrock.<\/p>\n
Every figure above comes from OpenAI’s own launch post, not from independent testing. Independent benchmarks for Astra were not available at launch, so the saturated-benchmark claim, the OSWorld comparison, and the 0 percent scope-overrun result should be read as vendor-reported until outside labs reproduce them.<\/p>\n
GPT-6 Astra is OpenAI’s newest model, described by the company as its most intelligent and most aligned. It ships with computer-use capabilities and a 0 percent scope-overrun rate on OpenAI’s new internal test.<\/p>\n
Astra hit 98 percent on FrontierMath Tier 4 and 99.9 percent on ARC-AGI-3. OpenAI describes both as saturated. On ExploitBench, the model scored 100 percent.<\/p>\n
Astra scored 72.6 percent on the OSWorld 2.0 latency simulation at about 40 minutes per task. GPT-5.6 Sol scored 65.7 percent at about 75 minutes per task, making Astra roughly 47 percent faster.<\/p>\n
Limited organisations get Astra first. ChatGPT Plus, Pro, Business, and Enterprise users follow, with availability on the OpenAI API, Microsoft Azure, and AWS Bedrock.<\/p>\n