OpenAI cut GPT-5.6 Luna's output price by 80% in July 2026
List price per million output tokens before and after three 2026 price changes, in US dollars
Show the numbers as a table
| Category | Before | After |
|---|---|---|
| OpenAI GPT-5.6 Luna, July 30 | $6.00 | $1.20 |
| OpenAI GPT-5.6 Sol, August 21 | $30.00 | $20.00 |
| Anthropic Claude Opus 5 to Opus 5.5, September 22 | $25.00 | $20.00 |
About the data
- Sources
- OpenAI, API changelog (July 30, August 21 and September 29, 2026) (opens in a new tab)Entries for Jul 30 (Luna "costs 80% less"), Aug 21 (Sol $4 and $20) and Sep 29 (GPT-6.1 Sol)
- OpenAI, GPT-5.6 Luna model page (opens in a new tab)Pricing, text tokens per 1M tokens
- Max Woolf, OpenAI and Anthropic cut their LLM prices by up to 80% within a few months (October 25, 2026) (opens in a new tab)Timeline, June 26, 2026 (GPT-5.6 Sol and Luna launch prices)
- Anthropic, Claude Opus 5.5 (September 22, 2026) (opens in a new tab)Pricing table, prices per 1M tokens
- Method
- Output prices are list prices per million tokens at standard processing speed; Sol's after price is promotional. Luna's after price is from OpenAI's model page and its before price from Max Woolf; OpenAI's changelog gives the 80% cut. Sol's earlier output price of $30 is Woolf's; OpenAI's changelog gives the new $20 price and calls it 33% lower. Opus prices are from Anthropic's Opus 5.5 pricing table.
- Published
Free to share and embed with credit to Kent Applied (CC BY 4.0). The source data keeps its own terms.
A fact from this chart
Sources for the figures above: AI Gateway Production Index, October 2026 (opens in a new tab).
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