OpenAI launches GPT-6 Sol and Luna: faster models with 50% cheaper API
VraserX · x · 2026-09-23
OpenAI officially welcomed GPT-6 Sol and GPT-6 Luna, bringing much of GPT-6 Astra's advances into faster, more affordable models for work at scale. The company says improved caching and inference efficiency are being passed to users as 50% lower API prices versus GPT-5.6 promotional pricing.
Commenters note the model race is heating up: Opus 5.5, GPT-6 Sol, Luna, and Astra now compete head to head.
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