OpenAI Releases GPT-6 Sol and Luna: 50% Cheaper API Pricing and Benchmarks
OpenAI launched GPT-6 Sol and Luna API models at roughly half of GPT-5.6 pricing, with Sol beating Claude Opus 5 on several benchmarks.
Sol ($2/$10 per 1M input/output tokens) and Luna ($0.10/$0.50) are API-only models positioned below GPT-6 Astra, targeting complex coding and fast high-volume work respectively. Sol scores 33.2% on AutomationBench 1.0.6 versus Claude Opus 5's 26.9% at 11x the cost, plus 56.4% on Agents' Last Exam, 68.8% on DeepSWE v1.1, and 60.5% on OSWorld 2.0. GPT-6 also ships improved prompt caching with up to 90% discounts on cached input reads, a caching dashboard, and new cache-control developer features.
- Sol priced $2/$10, Luna $0.10/$0.50 per 1M input/output tokens.
- Sol beats Claude Opus 5 max effort on AutomationBench at 9% cost.
- Luna scores 66.6% on DeepSWE v1.1, 93% cheaper per task than Opus 5.
- Cached input reads discounted up to 90%; new caching dashboard and breakpoints.
- API-only release; rolling out to ChatGPT Work, Codex, and desktop app.
- Organizations
- OpenAIGPT-6 SolGPT-6 LunaGPT-6 Astra
From the original article
4 min read at marktechpost.com
OpenAI has released GPT-6 Sol and GPT-6 Luna, 2 lower-cost models trained with methods similar to GPT-6 Astra. Sol costs $2/$10 and Luna $0. 10/$0.
By Sana Hassan · marktechpost.com
A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.