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

By Thomson Reuters Aug 21, 2026 | 4:29 PM

Aug 21 (Reuters) – 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.

• 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.

(Reporting by Anzar Mehraj in Bengaluru; Editing by ​Leroy Leo)