OpenAI Launches GPT-6 Sol and Luna: Sol Beats Opus 5 at 9% of the Cost
_philschmid · x · 2026-09-23
Phil Schmid quotes OpenAI's official introduction of GPT-6 Sol and Luna, bringing Astra's advances to faster, cheaper model tiers.
- Sol targets serious coding and computer use; Luna targets fast computer use and more.
- Both feature improved factuality, alignment, and clearer, jargon-free answers.
- Benchmarks: on AutomationBench, Sol at xhigh effort outperforms Claude Opus 5 at max effort at just 9% of its per-task cost; on OSWorld 2.0 offline, Luna at max effort exceeds GPT-5.6 Sol at medium effort.
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