OpenAI cuts developer pricing for frontier GPT-5.6 Sol model by more than 20%

OpenAI said on Friday it is ​cutting the prices ​of its frontier GPT-5.6 Sol model for ​developers by more than 20% for the next three months, as the ChatGPT maker faces growing competition from ‌Anthropic ⁠and Chinese ⁠AI models.

The price cuts ​are effective on OpenAI's application programming interface, or API, and ​are rolling out across eligible plans for credits on its agentic AI product ChatGPT Work ​and its coding tool Codex, ⁠OpenAI said.

‌Pricing for Pro, Plus and Business ​subscriptions ​remains unchanged, the company said.


GPT-5.6 ⁠Sol is now priced at $4 per 1 ​million input tokens and $20 per 1 ​million output tokens for standard short-context use, according to OpenAI's pricing table. That compares with previous prices of $5 and $30, respectively.

OpenAI late last month slashed prices of its smaller ‌models. It cut prices for the mid-tier GPT-5.6 Terra model by 20% and ​for the ​lower-cost Luna ⁠model by 80%.

Anthropic lists its frontier Claude Fable 5 model at $10 per 1 million input tokens ​and $50 per 1 million output tokens, while its Claude Opus 5 model is listed at $5 per 1 million input tokens and $25 per 1 million output tokens.