OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes
OpenAI has partnered with Google Cloud to make its frontier models and Codex agentic workflows available for purchase through the Google Cloud model garden. The company also introduced GPT-6.1 Sol, which maintains the same input and output token pricing as the original GPT-6 Sol but reduces cached input costs to $0.10 per million tokens. While GPT-6 Sol is available for paid ChatGPT users and GPT-6 Luna serves free and Go users, the updated GPT-6.1 Sol is restricted to Work, Codex, and API users. OpenAI has also implemented price reductions for Sol and Luna to attract small and medium businesses.
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- ✓ OpenAI frontier models and Codex agentic workflows are now available for purchase on Google Cloud.
- ✓ GPT-6.1 Sol cached input costs $0.10 per million tokens, half the price of the original GPT-6 Sol.
- ✓ GPT-6 Sol is available for paid ChatGPT plans, while GPT-6 Luna is available for Free and Go plans.
- ✓ GPT-6.1 Sol is available via Work, Codex, or the API.
What changed
OpenAI integrated its models into Google Cloud and released GPT-6.1 Sol with cheaper cached input pricing.
Live updates
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OpenAI expands GPT-6 access via Google Cloud and introduces GPT-6.1 Sol
OpenAI has partnered with Google Cloud to make its frontier models and Codex agentic workflows available for purchase through the Google Cloud model garden. The company also introduced GPT-6.1 Sol, which maintains the same input and output token pricing as the original GPT-6 Sol but reduces cached input costs to $0.10 per million tokens. While GPT-6 Sol is available for paid ChatGPT users and GPT-6 Luna serves free and Go users, the updated GPT-6.1 Sol is restricted to Work, Codex, and API users. OpenAI has also implemented price reductions for Sol and Luna to attract small and medium businesses.
Why it matters
This rollout follows the October 7 and 8 deployment of GPT-6 Sol and Luna to ChatGPT. The inclusion of OpenAI models on Google Cloud makes it the only hyperscale provider offering Gemini, Claude, and GPT on one platform. These moves signal a shift toward aggressive price competition and broader enterprise distribution.
What is confirmed
- OpenAI frontier models and Codex agentic workflows are now available for purchase on Google Cloud.
- GPT-6.1 Sol cached input costs $0.10 per million tokens, half the price of the original GPT-6 Sol.
- GPT-6 Sol is available for paid ChatGPT plans, while GPT-6 Luna is available for Free and Go plans.
- GPT-6.1 Sol is available via Work, Codex, or the API.
- Google Cloud offers access to Gemini, Claude, and GPT models on a unified platform.
Still unconfirmed
- OpenAI has announced significant price reductions on its GPT-6 Sol and Luna models for small and medium-sized businesses.
What to watch next
- Verification of GPT-6.1 Sol performance benchmarks against Astra and Luna
- Details on the specific pricing tiers for OpenAI models within the Google Cloud model garden
confidence 95%Sources used for this update (8)
- ucanly.io — GPT-6 Explained: Intelligent UI, Sol, Luna and Astra…
- finance.yahoo.com — OpenAI Models to be Available on Google Cloud Under New Partnership
- www.neuraitool.com — GPT-6.1 Sol vs GPT-6 Luna: Which OpenAI Model to Use
- familypro.io — GPT-6 Models Compared: Pricing, Speed and 6.1 Sol Guide
- cual.ai — OpenAI reduces GPT-6 prices: Sol and Luna become more ...
- www.aicheatbook.com — Decoding OpenAI's GPT-6 Family: Astra vs. Sol vs. Luna
- teckhustlers.com — GPT-6 Sol vs Luna: Differences, Pricing and Which OpenAI ...
- cloud.google.com — Google Cloud expands model choice and flexibility, bringing OpenAI models to customers
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OpenAI integrates GPT-6 Sol and Luna into ChatGPT with new Intelligent UI
OpenAI has deployed its GPT-6 model family to ChatGPT users, introducing an Intelligent UI that generates answers using forms, charts, and tools. Paid subscribers received access to GPT-6 Sol starting October 7, 2026, while free users gained access to GPT-6 Luna on October 8. These models, which include Astra, Sol, and Luna tiers, provide developers with lower API costs and faster performance. The rollout extends these capabilities across the API, Codex, and ChatGPT to make high-volume automation more accessible for organizations.
Why it matters
OpenAI is a San Francisco-based public benefit corporation valued at 852 billion dollars as of March 2026. The GPT-6 release follows a strategy to offer tiered reasoning and speed options to compete in the AI market. This expansion targets over 1.2 billion ChatGPT users.
What is confirmed
- GPT-6 Sol became available for paid ChatGPT plans on October 7, 2026.
- GPT-6 Luna became available for free ChatGPT users on October 8, 2026.
- The GPT-6 model family consists of three tiers: Astra, Sol, and Luna.
- ChatGPT now features an Intelligent UI that uses tools, forms, and charts to build answers.
- GPT-6 Sol and Luna are positioned as faster and more affordable versions of GPT-6 Astra.
- OpenAI is headquartered in San Francisco, California.
Still unconfirmed
- OpenAI has reset its revenue to 50 billion dollars ARR.
- GPT-6 Luna offers a 44 percent speed increase.
- One version of the model is designated as GPT-6.1 Sol.
What to watch next
- Verification of safety scores for the GPT-6 Luna system card
- Details on the expansion of OpenAI advertising
confidence 95%Sources used for this update (16)
- en.wikipedia.org — OpenAI - Wikipedia
- www.coursera.org — What Is OpenAI? Everything You Need to Know - Coursera
- completeaitraining.com — OpenAI launches GPT-6 model family with three tiers for ...
- kju.ai — OpenAI adds GPT-6 Sol and Luna with lower API prices | Kju
- gpuman.com — OpenAI’s GPT-6 Model Guide: When to Use Astra, Sol, or Luna
- 9to5mac.com — OpenAI brings GPT-6 to ChatGPT and debuts Intelligent UI
- datanorth.ai — OpenAI launches new GPT-6 Sol and Luna - datanorth.ai
- kaptentekno.com — OpenAI Launches GPT-6 Sol and Luna, Here's How They Compare ...
- community.openai.com — GPT-6 is now rolling out to all ChatGPT users - ChatGPT ...
- asoasis.tech — OpenAI’s pivotal week: GPT‑6 rolls out, revenue resets to ...
- www.signalstack.news — GPT-6 in Free ChatGPT: Luna vs Sol, Safety Scores | SignalStack
- veonib.com — GPT-6 Sol and Luna: OpenAI's 50% API Price Cut for Ecommerce ...
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OpenAI pushes agentic workloads to lower-cost GPT-6 Sol and Luna
OpenAI is shifting agent-based work and high-volume workloads toward its GPT-6 Sol and Luna models. Launched September 22, 2026, these models use the Astra architecture to provide professional capabilities at a 50 percent lower API cost. Sol targets coding and complex tasks, while Luna manages routine information extraction and document summaries. Luna is priced at $0.10 per million input tokens, while Sol costs $2 per million input tokens and $10 per million output tokens. The rollout aims to make automation and agent work more affordable for developers.
Why it matters
These releases occur during an LLM market price war involving Claude Opus 5.5. By splitting GPT-6 into specialized tiers, OpenAI allows users to balance cost against task complexity. This strategy prioritizes efficiency for high-volume automation over a single general-purpose model.
What is confirmed
- OpenAI launched GPT-6 Sol and GPT-6 Luna on September 22, 2026.
- The GPT-6 Sol and Luna models feature lower API rates than previous offerings.
- Sol focuses on complex tasks and coding, while Luna handles routine work like information extraction and document summaries.
- Both models are based on the Astra architecture.
- Luna costs $0.10 per million input tokens.
- Sol costs $2 per million input tokens and $10 per million output tokens.
What to watch next
- Performance benchmarks comparing GPT-6 Sol against Claude Opus 5.5
- OpenAI reporting on actual coding accuracy gains for Sol
- Further API price reductions in response to competitor moves
confidence 100%Sources used for this update (3)
- www.neoteo.com — GPT-6 Sol and GPT-6 Luna launch: API rates from OpenAI | NeoTeo
- techhelp.ca — OpenAI expands GPT-6 with lower-cost Sol and Luna models
- www.aitude.com — GPT-6 Sol and Luna: OpenAI’s New Affordable AI Models
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OpenAI expands GPT-6 family with Sol and Luna models
OpenAI launched GPT-6 Sol and Luna on September 22, 2026, to provide professional AI capabilities at a 50 percent lower API cost. Sol focuses on complex tasks and coding, while Luna handles routine work like information extraction and document summaries. Both models are based on the Astra architecture. Luna costs $0.10 per million input tokens, while Sol is priced at $2 per million input tokens and $10 per million output tokens. These releases coincide with a broader price war in the LLM market involving Claude Opus 5.5.
Why it matters
The launch follows the release of GPT-6 Astra, which OpenAI described as its most powerful model. By offering lower-cost versions with similar performance, OpenAI aims to make high-end AI more accessible for everyday professional use. This move occurs as the company and Anthropic lobby Australian lawmakers to ease restrictions on training AI with local content.
What is confirmed
- OpenAI launched GPT-6 Sol and Luna on September 22, 2026.
- API prices for Sol and Luna are cut by 50 percent.
- GPT-6 Luna is priced at $0.10 per million input tokens.
- GPT-6 Sol is priced at $2 per million input tokens and $10 per million output tokens.
- Sol targets coding and complex tasks, while Luna handles routine work like document summaries and information extraction.
- The Sol and Luna models are based on the Astra architecture.
- OpenAI and Anthropic have asked Australian lawmakers to reconsider rules blocking AI training on local content.
Still unconfirmed
- GPT-6.1 Sol delivers Astra-like performance at a dramatically lower price.
- OpenAI cut GPT-6 Sol and Luna API prices on September 23, 2026.
What to watch next
- Australian government decision on copyright exceptions for AI training
- Performance benchmarks comparing Sol and Luna against Claude Opus 5.5
confidence 90%Sources used for this update (13)
- techcrunch.com — OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes
- flipboard.com — Anthropic and OpenAI ask Australia to ease its ban on AI training with local content
- www.businessghana.com — OpenAI launches GPT-6 Sol and Luna, boasting lower cost and ...
- www.analyticsvidhya.com — GPT-6 Sol and Luna: Near-Astra Performance at Half the Price?
- gameboy.kr — IT·AI·컴퓨팅 데일리 — 2026년 9월 23일 (수) | GAMEBOY.KR
- simonw.substack.com — 2026 in LLMs (so far) - Simon Willison’s Newsletter
- www.speedtest.net — Speedtest by Ookla - The Global Broadband Speed Test
- intelligence.speedtest.net — Speedtest Intelligence
- ciscoconnect.speedtest.net — Speedtest.net
- siliconangle.com — OpenAI’s GPT-6.1 Sol delivers Astra-like performance at a dramatically lower price
- www.wionews.com — OpenAI's GPT-6 Sol and Luna are here: 50% cheaper AI ... - WION
- www.crowdfundinsider.com — OpenAI Expands GPT-6 Lineup with More Economical Sol and Luna ...
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OpenAI Launches GPT-6 Sol and Luna Models
OpenAI has released the GPT-6 Sol and Luna artificial intelligence models, offering lower usage costs and reduced error rates compared to previous versions. The new lineup features API prices cut by 50 percent, with GPT-6 Luna priced at $0.10 per million input tokens, and Sol priced at $2 per million input tokens and $10 per million output tokens. The models include improved coding abilities, better reliability, caching, and advanced AI agent capabilities adapted from the Astra model.
Why it matters
The release arrived during a competitive rollout cycle that also included Anthropic launching its Claude Opus 5.5 model on the same night. OpenAI debuted its new models roughly 90 minutes after the Anthropic announcement, highlighting an ongoing industry push to deliver more powerful artificial intelligence capabilities at lower price points.
What is confirmed
- OpenAI released the GPT-6 Sol and Luna models.
- API prices for the new models are cut by 50 percent compared to predecessors.
- GPT-6 Luna is priced at $0.10 per million input tokens.
- Sol has an API pricing of $2 per 1 million input tokens and $10 per 1 million output tokens.
- Anthropic released Claude Opus 5.5 on the same night.
Still unconfirmed
- The OpenAI announcement came about 90 minutes after the Anthropic release.
What to watch next
- User adoption rates and performance benchmarks for GPT-6 Sol and Luna
- Comparative developer feedback on OpenAI and Anthropic competing models
confidence 100%Sources used for this update (10)
- TechCrunch — OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes
- OpenAI — Introducing GPT-6 Sol and Luna
- Ars Technica — New Anthropic, OpenAI models make same promise: A little more for a lot less money
- Anthropic — Introducing Claude Opus 5.5
- The New York Times — Anthropic Releases a New A.I. Model, Opus 5.5, Amid Safety Debate
- note.com — GPT-6 Sol and Luna Released: No Terra in GPT-6, Prices Halved
- www.tech2geek.net — GPT-6 Sol and Luna Are Here: OpenAI Launches Cheaper AI Models With Major Upgrades
- finance.yahoo.com — OpenAI cuts GPT-6 Sol and Luna API prices by 50%
- incrypted.com — OpenAI Introduced GPT-6 Sol and Luna With Lower Usage Costs
- enterpriseai.economictimes.indiatimes.com — OpenAI launches GPT-6 Sol, Luna at half the price of previous models
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