OpenAI has officially released GPT-5.6, marking a significant advancement in their AI offerings. This new version introduces a three-tier model family, which includes Sol, Terra, and Luna, each tailored to different usage scenarios and pricing structures.
The Sol model is priced at $5 per million tokens, with a bulk rate of $30 for larger volumes. Terra offers a more economical option at $2.50 per million tokens, while Luna is the most affordable at $1 per million tokens.
This tiered approach allows users to select a model that best fits their needs, whether for high-performance tasks or budget-conscious applications. Additionally, GPT-5.6 includes programmatic tool calling capabilities, enhancing its functionality within the Responses API.