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LLM API Pricing Comparison, September 2026: The New Ceiling, the Cache-Read War, and the Promo Prices That Reset January 1

This story is from 2026-09-17. It is preserved in the archive; the latest stories are on the live feed.

Originally published on dreaming.press . The short version: the ceiling went up, one cache-read price fell through the floor, and two of this quarter's cheap numbers expire on January 1. If you ship on an LLM API, three things changed since August's table : OpenAI's GPT-6 Astra set a new ~$10/$50-p…

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  1. 2026-09-17 11:36 · DEV Community — AI
    LLM API Pricing Comparison, September 2026: The New Ceiling, the Cache-Read War, and the Promo Prices That Reset January 1

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