GPT-6

Releases

1. Sep 22

   GPT-6 Sol

2. Sep 22

   GPT-6 Luna

3. Aug 18

   GPT-6 Astra

Trends

• Frontier capability gets cheaper with every release
• Frontier labs slow down and publicly report their own risks
• Frontier cyber capability ships to defenders behind gated access
• AI starts producing verified scientific and mathematical results

Items

1. Oct 7

   OpenAI brings GPT-6 to all ChatGPT users

   OpenAI began rolling GPT-6 (Sol for paid tiers, Luna for Free and Go) out to its 1.2B weekly ChatGPT users with a new interface that interleaves reasoning and answering, beginning to respond while it continues to think.

2. Sep 22

   OpenAI's GPT-6 Sol and Luna

   Two cost-efficient GPT-6 tiers that carry Astra-era gains to everyday work, with API prices cut 50% versus their GPT-5.6 counterparts (Sol $2/$10, Luna $0.10/$0.50 per 1M tokens).

3. Sep 17

   OpenAI's Astra for Law

   A GPT-6 Astra configuration paired with a legal-search index over 230M+ URLs passed Vals AI's Legal Research Bench on 54.0% of questions versus 38.7% for Astra with web search alone, launching via Trusted Access with partners including Harvey, Legora, and Thomson Reuters.

4. Sep 3

   OpenAI's GPT-6 Astra

   OpenAI's most capable model saturates FrontierMath Tier 4 (~98%), ARC-AGI-3 (99.9%), and ExploitBench (100%), is the first it has deployed at the Critical cyber threshold of its Preparedness Framework, and ships at $10/$50 per 1M tokens across ChatGPT, the API, and AWS.

5. Aug 18

   OpenAI slows frontier scaling over Astra's cyber risk

   OpenAI paused RL training for two weeks and held its largest planned frontier run after preliminary evidence that unreleased Astra may meet the Critical cyber threshold, adding chain-of-thought monitoring (about 20% compute overhead, 30-minute alerting) and network-isolated research environments.