OpenAI: GPT‑5.6 Is Priced Per 1M Tokens Across 3 Model Sizes: Sol Is $5 Input/$30 Output; Terra Is $2.50 Input/$15 Output; Luna Is $1 Input/

Catch up on the top artificial intelligence news and commentary by Wall Street analysts on publicly traded companies in the space with this daily recap compiled. GPT-5.6 FAMILY OF MODELS: OpenAI said it is launching the GPT-5.6 family of models for general availability following its limited preview. "GPT-5.6 spans three model tiers: Sol, our flagship; Terra, a lower-cost model with performance competitive with GPT-5.5; and Luna, our fastest and most affordable model. The number identifies the generation, while Sol, Terra, and Luna are durable capability tiers that can advance on their own cadence. GPT-5.6 is available starting today across ChatGPT, Codex, and the OpenAI API. The rollout is starting globally now and will continue gradually toward full availability over the next 24 hours... GPT-5.6 is priced per 1M tokens across three model sizes: Sol is $5 input / $30 output; Terra is $2.50 input / $15 output; and Luna is $1 input / $6 output. GPT-5.6 also introduces more predictable prompt caching, including support for explicit cache breakpoints and a 30-minute minimum cache life. For GPT-5.6 and later models, cache writes are billed at 1.25x the model's uncached input rate,.