Truth Check/25 September 2026
“GPT-6 Sol and Luna are 50% cheaper”
The claim as it travelled: OpenAI, 22 Sept 2026.
Overstated
The claim goes further than the page that produced it.
OpenAI's 50% is against GPT-5.6's promotional pricing, which it names as promotional; it gives no non-promotional 5.6 price to compare.
- Checked Against
- openai.com ↗Primary
- Read the Check
- Anthropic and OpenAI cut their frontier prices on the same day - the 40 and the 50 are the sellers' numbers
Opus 5.5 is $4 in and $20 out; GPT-6 Sol is $2 and $10. Anthropic's 40% is a workload figure; OpenAI's 50% is against a promotional price.
Every claim we have checked, in the Ledger.
Every claim checked against the page that produced it.
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