# 20% price reduction for GPT 5.6 Sol

> Source: <https://community.openai.com/t/20-price-reduction-for-gpt-5-6-sol-api-codex-credits-and-chatgpt-work/1391726>
> Published: 2026-08-22 01:15:20+00:00

[VeitB](https://community.openai.com/u/VeitB)
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.

[_j](https://community.openai.com/u/_j)
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.

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** |