GPT-6 Luna
GPT-6 Luna is a variant of OpenAI’s GPT‑6 family that OpenAI has integrated into ChatGPT Voice, ChatGPT, and Codex, and Microsoft has added to its Foundry model lineup. The model runs on fewer tokens than the preceding GPT‑5.6 versions and is offered at roughly 50 % lower API fees, reflecting recent price‑cut announcements.
GPT-6 Luna is a language model from OpenAI, first covered on 23 September 2026. It is available through an API. Its context window is 1.05 million tokens.
Last updated
At a glance
- Made by
- OpenAI
- Type
- Language model
- Availability
- API
- Licence
- Not stated
- Context window
- 1.05 million tokens
- First seen
- 23 September 2026
- Launch story
- OpenAI announces GPT-6 Astra model
Taken from the coverage, not from our own testing; "not stated" means none of the reports we read gave it. All tracked models →
7 stories about GPT-6 Luna
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Microsoft adds GPT-6 Sol, Luna and Astra to Foundry model lineup
Microsoft’s chief technology officer Mark Russinovich warned that today’s most critical single points of failure are often AI models or inference endpoints rather than traditional infrastructure. He said the usual…
1 sourcemsdynamicsworld.com -
OpenAI adds GPT-6 Astra, Sol, Luna models and plugin access to ChatGPT Voice
OpenAI has updated ChatGPT Voice to run on its new GPT-6 Astra, Sol, and Luna models and enabled access to plugins like email, calendar, and Slack. The feature is now available globally in the latest app version and…
8 sourcesbusinesstoday.inThe DecoderTechCrunch AInote.com +4 more -
Simon Willison hosts agentic engineering meetup on 14th October
Simon Willison announced an evening event in San Francisco on Wednesday 14th October, co‑hosting with Jesse Vincent. The gathering is aimed at people building "weird and interesting things" with coding agents, offering…
1 sourceSimon Willison -
Anthropic releases Claude Opus 5.5; OpenAI halves prices for GPT-6 Sol and Luna
Anthropic announced on September 22, 2026 that its new model Claude Opus 5.5 offers performance close to the top‑tier offering but at a lower cost. The company highlighted a new “Effort” setting that lets users choose…
11 sourcesfinance.yahoo.comnote.compropakistani.pk -
Anthropic launches Claude Opus 5.5, claims 40% lower running costs than Opus 5
Anthropic released Claude Opus 5.5 on September 22, 2026, the first model in a new 5.5 family. The company says Opus 5.5 performs at the level of its higher-tier Fable 5.1 model on most tasks while costing 40% less to…
44 sources HN 49Social Media ExaminerZapier Blognote.comKDnuggets +19 more -
OpenAI announces GPT-6 Astra model
OpenAI announced GPT‑6 Astra on September 3, 2026. The model expands beyond question answering, adding web browsing, coding, cybersecurity and other professional tools. The author notes that the AI can now orchestrate…
39 sources HN 75note.commarginalrevolution.comynetnews.comCNBC Technology +24 more -
OpenAI adds GPT-6 Sol and Luna models to ChatGPT and Codex
OpenAI announced two new GPT‑6 variants, Sol and Luna, expanding the GPT‑6 family that already includes Astra. Both models run on fewer tokens than the GPT‑5.6 versions they replace and are priced about 50% lower, with…
5 sources primary source HN 197zdnet.comAWS Machine Learning BlogTechCrunch AI9to5mac.com +1 more
