GPT-6 Astra

As of October 19, 2026, GPT-6 Astra by OpenAI costs $10.00 per 1M input tokens and $50.00 per 1M output tokens, with a 1.05M-token context window. It ranks 5th of 17 models on the TensorFeed Intelligence Index's 2026 benchmark set, with a score of 83.3 (as of October 20, 2026).

GPT-6 Astra is the OpenAI flagship, released September 3, 2026 and pitched squarely at computer use: driving a browser, filling forms, editing spreadsheets and operating desktop applications the way a person would. API pricing is $10 per million input tokens and $50 per million output, with cached input at $1 and batch at half price. Two modifiers matter more than the headline rate. Requests above 272,000 input tokens bill on a separate long-context tier at $20 input, $2 cached and $75 output, which is easy to trip on exactly the long-horizon agent runs Astra is sold for, because an agent accumulating screenshots and tool output crosses that line without deciding to. Fast mode doubles every rate, and the Ultrafast tier OpenAI added on September 29, 2026 bills at six times the standard rate, which puts output at $300 per million tokens. Astra is also the first model OpenAI has placed in the Critical cybersecurity tier of its own Preparedness Framework, after pausing it in August: it scored 100 percent on ExploitBench and chained previously unknown vulnerabilities without step-by-step human direction. Rollout began as a limited preview for vetted cybersecurity partners before reaching ChatGPT Plus, Pro, Business and Enterprise, the API, and AWS. On September 22, 2026 OpenAI filled out the generation below it with GPT-6 Sol at $2/$10 and GPT-6 Luna at $0.10/$0.50, and said Astra remains its best model across the board.