20% price reduction for GPT 5.6 Sol: API, Codex credits and ChatGPT Work
20% price reduction for GPT 5.6 Sol: API, Codex credits and ChatGPT Work
VeitB August 21, 2026, 7:41pm 1
As we continue to push the frontier of capabilities while improving efficiency, we’re dropping API and credit pricing of GPT-5.6 Sol by over 20% for the next 3 months.
Now available on the API and rolling out across eligible plans for ChatGPT Work and Codex credits.
Pro, Plus, and Business subscription usage remains unchanged.
Track usage and spend by API key
\_j August 22, 2026, 12:03am 3
Sol now costs over 20% less, (Terra costs 20% less, and Luna costs 80% less.)
- Sol’s promotional pricing is available at least through November 21, 2026.
[](https://community.openai.com/t/20-price-reduction-for-gpt-5-6-sol-api-codex-credits-and-chatgpt-work/1391726#p-1932988-gpt-56-api-pricing-changes-july-30-sol-promo-aug-21-nov-21-1)GPT-5.6 API pricing changes - July 30 + Sol promo Aug 21 - Nov 21+
Prices are in USD per 1 million tokens. New for “Sol” is the promotional price reduction
| Model | Input — Old | Input — New | Cached — Old | Cached — New | Output — Old | Output — New | | ------------- | ----------- | ----------- | ------------ | ------------ | ------------ | ------------ | | GPT-5.6 Sol | $5.00 | $4.00 | $0.50 | $0.40 | $30.00 | $20.00 | | GPT-5.6 Terra | $2.50 | $2.00 | $0.25 | $0.20 | $15.00 | $12.00 | | GPT-5.6 Luna | $1.00 | $0.20 | $0.10 | $0.02 | $6.00 | $1.20 |
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