OpenAI launches GPT-6 Sol and Luna at half GPT-5.6 prices
2 Yesterday 2:00 PM · 1d ago · 28 articles · 15 posts · 4 comments · 7 sources · development 2 of 6
OpenAI released GPT-6 Sol and Luna, extending Astra's improvements to cheaper tiers, and cut API prices roughly 50% versus GPT-5.6 (Sol from $4/$20 to $2/$10; Luna from $0.20/$1.20 to $0.10/$0.50).
“GPT‑6 Sol and Luna build on Astra's advances in alignment, showing improvements over their GPT-5.6 counterparts.”
OpenAIOpenAI Developer of GPT-6 Sol and LunaAnthropic Developer of Claude Opus 5.5Simon Willison Independent AI commentator/bloggerThariq Shihipar Commentator quoted on Opus 5.5Artificial Analysis Independent AI benchmarking firm
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What was reported 8 claims about this development
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first by The Verge, 1d ago · also HN Best, HN Frontpage, ZDNET, Bitcoin Insider, iThinkDifferent, TestingCatalog AI News +3
9 more headlines
- GPT-6 Sol and Luna HN Best · 1d ago
- OpenAI’s GPT-6 Sol doubles its accuracy rate ZDNET · 1d ago
- OpenAI Slashes GPT-6 Sol and Luna API Prices by Half to Hold Developer Share Bitcoin Insider · 1d ago
- OpenAI Launches GPT-6 Sol and Luna with 50 Percent Lower Prices iThinkDifferent · 1d ago
- OpenAI launches faster, cheaper GPT-6 Sol and Luna TestingCatalog AI News · 1d ago
- Claude Opus 5.5 and OpenAI GPT-6 Sol & Luna both launch today with lower costs 9to5Google · 1d ago
- OpenAI Cuts API Prices 50% With GPT-6 Sol and Luna iClarified · 1d ago
- OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes TechCrunch · 1d ago
- OpenAI launches GPT-6 Sol and Luna, saying Sol makes about half as many mistakes as GPT-5.6 Sol and Luna matches GPT-5.6 Sol's performance at ~1% of the cost ZDNET · 1d ago
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first by Indian Express, 23h ago · also The Economic Times, Reuters, Channel News Asia
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first by Seeking Alpha, 1d ago · also MacRumors, MacRumors Forums
1 more headline
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first by Simon Willison, 1d ago · also Simon Willison's Weblog
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first by The Deep View, 1d ago · also The Information
1 more headline
- OpenAI Announces Cheaper GPT-6 Family Models The Information · 1d ago
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first by Ghacks, 19h ago
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first by The Decoder, 1d ago
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first by Financial Express, 1d ago
What people said 14 voices · best of 15 · verbatim
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GPT‑6 Sol and Luna build on Astra’s advances in alignment, showing improvements over their GPT-5.6 counterparts.
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I don't see how anyone can be using Claude with prices like this, it's pretty incredible what the OpenAI team is doing, w.r.t model quality and pricing. Prices per 1M tokens Claude Opus 5.5 Claude Opus 5 Cache reads $0.20 $0.50 Input tokens $4 $5 Output tokens $20 $25 Cache writes $5 $6.25 ModelInputOutputPrice reductionGPT‑6 Sol vs. GPT‑5.6 Sol$4…
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OpenAI is launching two new models, which it says are cut from the same cloth as Astra. https:// techcrunch.com/2026/09/22/open ai-launches-gpt-6-sol-and-luna/?utm_source=dlvr.it&utm_medium=mastodon
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🚨 GPT-6 Sol is HALF the price of GPT-5.6 Sol. Standard API pricing per 1M tokens (input / output): Sol: $4 / $20 → $2 / $10 Luna: $0.20 / $1.20 → $0.10 / $0.50 That's 50% cheaper input and nearly 60% cheaper output for Luna.
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I've been working with agents all year, but 5.6 Sol was some sort of sweet spot for me. Something about how it communicated verbally and its engineering instincts just clicked for me, and I was able to somehow predict it and jam with it. Like a colleague you click with. It's the first model I've gotten attached to. I'm concerned that whatever…
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GPT-6 Sol and Luna L: https:// openai.com/index/introducing-g pt-6-sol-and-luna/ C: https:// news.ycombinator.com/item?id=4 9805509 posted on 2026.09.22 at 14:00:34 (c=0, p=6)
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It seems OpenAI are making up for 6 Sol likely not being as good as Opus 5.5 through its pricing. Still waiting for benchmarks to drop, but... GPT-6 Sol is 50% of the price of 5.6 Sol. $2 in per million tokens, $10 out. 🤑
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Cutting prices by 50% as compared to 5.6 prices is exciting. GPT-6 Luna at $0.10/Mio input tokens and $0.50/Mio output is positively insane.EDIT: this doesn't say anything about availability on either Azure or AWS. I'm assuming it will show up later, but it would be interesting if it didn't.
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GPT-6 Sol and Luna just landed in Astra's orbit. Both launch today with API prices 50% lower than GPT-5.6. Build with Sol. Scale with Luna. To production and beyond.
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The only two benchmarks shared between the Opus 5.5 and Sol 6 launch seem to be frontier code and automation bench, looks like Sol wins on automation bench (same performance for half the cost) and Opus 5.5 wins on frontier code (2-5% better scores across the board for same cost)
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It's a double release day just like old times! GPT-6 Sol and GPT-6 Luna are rolling out, for some of my mutuals they are already live. OpenAI announcement incoming.
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GPT-6 Sol and Luna are out. Not only are they a very significant improvement across the board, but also in writing and general “you know when you try it
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GPT-6 Sol and Luna are dirt cheap GPT-6 Sol is half the price of Opus 5.5
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GPT-6 Sol and Luna benchmarks from the official blogpost!
All 6 developments of OpenAI and Anthropic trade blows in AI price war: GPT-6… →
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