GPT-6 Astra Launches September 3 with Pricing, Specs, and Deployments

OpenAI released GPT-6 Astra on September 3, 2026 as a limited preview for trusted partners, then broadened access to paid ChatGPT plans and the API on September 4. The model carries a context window of over one million tokens, with pricing at $10 per million input tokens and $50 per million output tokens, approximately 2.5x the cost of GPT-5.6 Sol. Independent testing by Artificial Analysis found that while Astra uses about 10% fewer output tokens than Sol on general intelligence benchmarks, total cost per task is still roughly 75% higher. Artificial Analysis documented six model variants under the Astra line, ranging from a low-cost option to a max tier that scores 61 on their Intelligence Index, with pricing varying up to 3.6x across the range. Early access was restricted to a small set of organizations via a program called Daybreak Access, with GitHub Copilot reaching general availability with the model. OpenAI delayed the release after a Hugging Face incident in July 2026 to add safeguards; the public version rejects certain prompts in cybersecurity areas, and cyber-sensitive capabilities are gated behind a trusted-access program disabled by default for Enterprise users. OpenAI also published a security incident disclosure confirming a more capable pre-release model existed before the public launch. Sam Altman told CNBC that memory capability is what users most want with GPT-6. In domain deployments, Legora's agent completed a financial-statement tie-out across 41 documents in minutes, with GPT-6 Astra improving performance by nearly 40% over the previous model on that workflow and finding all four deliberately planted errors including a £500,000 gap hidden in a revenue note. Runway announced its tools are accessible inside ChatGPT through Astra. A separate multi-model pipeline uses Astra to code scene geometry into Blender, with Dreamina's Clay Renderer Plugin bridging that to Seedance 2.5 for final rendering. Users reported Astra building a detailed Manhattan world in Unreal Engine street by street, producing an interactive VR model of the Moog System 55 modular synthesizer for the Meta Quest 3 over a weekend, constructing a simulation of the Senate Office complex, and building a historically-based simulation of the Library of Alexandria. Astra operated an autonomous people-tracking drone inside the Andon Labs office and set a new record on their Drone-Bench evaluation.