October 31, 2026
Heard in AI

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Inference costs

Briefings and ideas about Inference costs from AI podcast discussions and the research they cite, with links to the original sources.

Positron co-founder says AI token spend briefly topped salaries

Thomas Sohmers, co-founder of AI chip company Positron, says GPT-6 Astra and Opus 5.5 agents now run its chip tests on emulators in a closed loop. He says the company's token spend briefly exceeded its human salaries and peaked above $100,000 a day, and the agents have not yet had a novel design idea.

6 min read

Positron's CTO makes the case for a memory-first AI chip

Positron CTO Thomas Sohmers said AI agents are multiplying demand for memory. He claimed Positron's first-generation product sustained 93% of theoretical memory bandwidth, against an average of 30–40% for NVIDIA GPUs when decoding with transformer models. Its next chip, Asimov, is planned for 2027.

7 min read