GPT-5.6 Explained: What Sol, Terra, and Luna Are (and Why It's Not GPT-6)
GPT-5.6 is OpenAI's July 2026 model family - and it is not GPT-6. Released July 9, 2026, it splits one generation into three durable tiers: Sol (flagship, $5.00 input and $30.00 output per million…
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OpenAI Launches GPT-5.6, Sol Leads Charge
OpenAI launched its GPT-5.6 model family on July 9, 2026, introducing flagship Sol, balanced Terra, and cost-efficient Luna models.
OpenAI launches GPT-5.6 family with Sol, Terra, and Luna models for general availability
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·7d agoOpenAI launches GPT-5.6 family with Sol, Terra, and Luna models for general availability
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·7d agoOpenAI launches GPT-5.6 family with Sol, Terra, and Luna models for general availability
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·7d agoOpenAI launches GPT-5.6 family with Sol, Terra, and Luna models for general availability
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·7d agoOpenAI launches GPT-5.6 family with Sol, Terra, and Luna models for general availability
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·7d ago
OpenAI launches GPT-5.6 family with three tiers: Sol, Terra, and Luna
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·6d agoOpenAI launches GPT-5.6 family with three tiers: Sol, Terra, and Luna
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·6d agoOpenAI launches GPT-5.6 family with three tiers: Sol, Terra, and Luna
More intelligence from every token, stronger performance per dollar, and more capability on demand for your hardest work.
openai.com·6d ago
OpenAI approved to launch GPT-5.6 models to the public on July 9
Sol is the flagship model, while Terra is described as twice as cheap as GPT-5.5 and Luna as the lowest-cost option.
GPT-5.6 Models Launched: Sol, Terra, and Luna Arrive
OpenAI announces the release of its new GPT-5.6 family of models: Sol, Terra, and Luna, already being tested for diverse applications.
GPT-5.6 Explained: OpenAI Introduces Sol, Terra, and Luna
OpenAI has officially unveiled GPT-5.6, the latest generation of its artificial intelligence models. Rather than releasing a single model, t
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