AIBRIEF
The three month price drop on GPT 5.6 Sol undercuts Anthropic on the cost of model output and leaves ChatGPT subscription tiers untouched.
OpenAI said Friday it is cutting developer-API prices for GPT-5.6 Sol, its top coding and reasoning model, by more than 20% for the next three months. Standard requests on the new tier cost $4 per million input tokens and $20 per million output tokens, down from $5 and $30, according to the company's pricing page.
The discount applies to API access, credits on the ChatGPT Work product, and the Codex coding tool. Pro, Plus, and Business subscription prices stay where they are, a carve-out that points the squeeze at people building AI products rather than people buying ChatGPT, Deccan Chronicle reported via Reuters.
The new Sol price undercuts Anthropic's flagship Claude Fable 5, listed at $10 per million input tokens and $50 per million output tokens, and beats Claude Opus 5 on output ($5 and $25). OpenAI attributed the move to "growing competition from Anthropic and Chinese AI models," Storyboard18 reported, citing the same Reuters dispatch.
The Sol cut completes a three-tier cascade in roughly a month. OpenAI trimmed mid-tier GPT-5.6 Terra by 20% late last month and cut the lower-cost Luna model by 80%, suggesting a coordinated repricing across the developer stack rather than a one-off promotion.
The three-month window, paired with the consumer subscription carve-out, points to a tactical probe of the developer market rather than a permanent reset, and leaves open whether the cut holds once the window closes.