OpenAI has released its new GPT-5.6 model family, featuring Sol, Terra, and Luna tiers with significantly lower per-token pricing. However, the actual cost per task may be higher due to increased token usage, a phenomenon highlighted by previous analyses of GPT-5.5 and Claude Opus 4.8. Early benchmarks suggest GPT-5.6 Sol performs comparably to Claude Fable 5 on reasoning tasks but at a substantially lower cost per task, while Terra and Luna offer even greater cost reductions. AI
IMPACT New pricing models for GPT-5.6 could shift enterprise adoption based on cost-per-task efficiency rather than per-token rates.
RANK_REASON New model release from a frontier lab (OpenAI) with detailed pricing and benchmark information. [lever_c_demoted from frontier_release: ic=1 ai=1.0]
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