OpenAI's GPT‑5.6 Models Are Here, with a Trio of Options Balancing Power and Performance
The new model family adds four-agent reasoning, higher-compute modes and lower API prices as OpenAI targets coding and scientific work.
- OpenAI launched its GPT-5.6 model family across ChatGPT, Codex, and its API, introducing three distinct tiers: the flagship Sol, mid-range Terra, and fast, low-cost Luna.
- The Trump administration earlier this week authorized the broad release following collaborative technical testing, though the White House denies the process constitutes formal approval, calling the scrutiny voluntary.
- Chief executive officer Sam Altman stated the company made "many changes" to the system during government security reviews, resulting in safety measures that block ten times as much nefarious activity.
- Pricing for Sol starts at $5 per one million input tokens and $30 per one million output tokens, while Terra and Luna offer lower-cost options for everyday tasks and high-speed demands.
- Competition in the sector remains intense, as Elon Musk confirmed SpaceXAI will release Grok 4.5 on Thursday, while Meta recently launched its own AI models to challenge market leaders.
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34 Articles
OpenAI's newest family of artificial intelligence models can help the company resume leadership in the AI race before its expected initial public stock offer (IPO). ChatGPT's developer said, on Thursday (9), that it launched the GPT-5.6 model family for general availability, after a limited period of time. The release includes a new main model, called Sun, beyond the Earth, designed for everyday use, and Luna, a more cost-effective model. Exclus…
OpenAI surprised the market with the launch of the GPT-5.6, the new generation of its language model. This update brings improvements in the execution of complex tasks and introduces an intelligent division of capabilities...
GPT-5.6 Sol, Terra, and Luna are here. See which one's best for you.
OpenAI has launched a new family of LLMs, but they're not all the same. These days, new versions of AI chatbots don't just launch; they're unshackled and released to the public following government scrutiny. OpenAI's new GPT-5.6 models were – like Anthropic's Claude Mythos and Fable – apparently too powerful to just launch; but now, after some tinkering, they're available …
Has OpenAI's GPT-5.6 Family of Models Beaten Anthropic's Fable Class? A Detailed Comparison
Just over a week after Fable 5 came back online for all users, OpenAI unveiled its own next-generation family: GPT-5.6 Sol, Terra, and Luna. Rather than a single flagship, OpenAI split the release into three capability tiers priced separately with Sol at the top and Luna at the bottom, arguing this lets each tier advance on its own tempo.
OpenAI has unveiled its most powerful GPT-5.6 model yet, named Sun (Sol). For less demanding work, there are also Earth (Terra) and Moon. The latter is also available to free users.
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