OpenAI's recent launches of GPT-6 Sol and GPT-6.1 Sol in late September 2026 have anchored the Sol line's standard output token pricing at $10 per million, with the newer model positioned as a more efficient alternative to higher-cost variants like Astra while maintaining frontier capabilities. This rapid cadence, combined with an "Ultrafast" mode rollout and prior 20%+ cuts on the GPT-5.6 Sol tier, reflects OpenAI's strategy to balance performance gains against competitive pressure from other large language models. Trader consensus around mid-range outcomes in 2026 stems from expectations that further releases or optimizations could sustain or modestly adjust these rates rather than trigger sharp increases or deep discounts, though new model iterations or infrastructure shifts remain key swing factors through year-end.