Rumor: GPT-6 Sol and Luna undercut Claude Opus 5 at 9% of the cost
Dimillian · x · 2026-09-23
- Unverified post claims OpenAI will launch GPT-6 Sol and Luna, bringing Astra advances to faster, cheaper models with stronger coding, computer use, factuality and alignment.
- Claimed: Sol at xhigh effort beats Claude Opus 5 at max effort on AutomationBench at 9% of the per-task cost; Luna exceeds GPT-5.6 Sol on OSWorld 2.0 offline at one-tenth the cost.
- Also claims 50% fewer factual errors than GPT-5.6 Sol and 90% discounts on cached input-token reads. Unofficial — treat as rumor.
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