GPT-5.6 Luna Offers Better Cost-Performance
haider1 · x · 2026-07-11
A comparison of the cost-performance ratio for GPT-5.6 Luna, Terra, and Sol at the xhigh tier concluded:
- Luna is currently the best deal: slightly smarter but roughly 40% cheaper.
- Across most reasoning tiers, Luna or Sol perform closely to Terra but at a lower cost.
- Therefore, the author believes that given the current setup, Terra struggles to justify its pricing.
Related event: GPT-5.6 Value Showdown: Luna and Sol Beat Terra(9 posts)→
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