GPT-6 Astra: A Million Tokens, No Fine-Tuning

OpenAI's GPT-6 Astra ships with a 1.05 million-token context window, ten native tools including computer use and MCP, and a five-level reasoning effort dial — but also no fine-tuning, a long-context pricing cliff, and benchmark numbers that shift depending on which harness ran them. This model spotlight walks through the spec sheet, the pricing math, and the contested ARC-AGI-3 results, plus the safety context: two training pauses in three months and reported departures from the safety team. If you're building on frontier models, this is the tradeoff map you need before you commit.

Episode 6036 — myweirdprompts.com/n/6036 (permanent short link: myweirdprompts.com/110245)