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.

Here ​are more details:

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.

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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 pricesfor 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.