OpenAI GPT-6.1 Sol launched with a new pricing tier. What is confirmed on capabilities, pricing and benchmarks, how it differs from GPT-6 Sol, and when to.
OpenAI launched a low-cost model on Sept 30, 2026, one day after shelving an Astra upgrade. Pricing, positioning, what it signals about frontier economics.
OpenAI shipped GPT-6 Sol and Luna on Sept 22, 2026 with a 1.05M context window and prices 50% below GPT-5.6. Here is what changed and how they compare.
OpenAI Sora 2 explained: the diffusion-transformer video model - spacetime patches, MM-DiT with synchronized audio, latent compression, clip length, physics, deployment, pricing and honest limits in 2026.
GPT-5.6 explained: OpenAI's Sol, Terra, and Luna tiered family - architecture signals, reasoning modes, benchmarks, pricing, access, and how it compares in 2026.