Tuesday, September 29, 2026 · San Francisco
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OpenAI Keeps GPT-6.1 Sol at $2 per Million Input Tokens and Halves Its Cached-Input Price

GPT-6.1 Sol, released Tuesday, charges $0.10 per million cached input tokens, half GPT-6 Sol’s $0.20. Standard input and output rates remain unchanged at $2 and $10 per million tokens. The saving applies to input the API serves from cache, the context agents resend on repeated calls. The model arrived at OpenAI’s DevDay, one week after GPT-6 Sol. On OpenAI’s OSWorld 2.0 computer-use test, GPT-6.1 Sol trails GPT-6 Astra by 2.1 percentage points at $1.27 a task against $9.44. Outside measurements from Artificial Analysis

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Tutorial: Mac Studio as Your Private AI Server

Set up a new Mac Studio as a private AI server, connect a second Mac through SSH and run local jobs for meeting notes, code review and document summaries. This beginner walkthrough includes commands, checks and a reusable acceptance record. It uses the 256GB M5 Ultra configuration as its reference and explains the announced 512GB model due in late October. Sample requests were checked on an existing local service; this is not an M5 Ultra benchmark.

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