Back to GPT-5.6 Sol pricing
GPT-5.6 Sol price history
Every tracked change to GPT-5.6 Sol token pricing on the OpenAI API — input, output, and cached-input rates per million tokens. Data goes back to July 12, 2026.
Price per million tokens
Price change events
| Date | Direction | Input | Output | Notes |
|---|---|---|---|---|
| August 31, 2026 | Decrease | $4/M | $20/M | Cache read fell $0.50 -> $0.40/MTok, tracking the 2026-08-21 20% input cut (cache reads bill at 1/10th of the $4 input rate). Input $4 and output $20 unchanged. Source: cellcog.ai + orcarouter.ai + openrouter.ai GPT-5.6 Sol pages. |
| August 21, 2026 | Decrease | $5 → $4/M (−$1) | $30 → $20/M (−$10) | OpenAI cut Sol >20% (input $5 -> $4, output $30 -> $20). Promotional through 2026-11-21. Sol now cheaper than Claude Opus 5. Applies to API + Codex credits + eligible ChatGPT Work plans. Source: enterprisedna.co + technology.org 2026-08-24. |
Full snapshot log
| Snapshot date | Input / 1M | Output / 1M | Cached input / 1M |
|---|---|---|---|
| August 31, 2026 | $4 | $20 | $0.4 |
| August 21, 2026 | $4 | $20 | — |
| July 13, 2026 | $5 | $30 | $0.5 |
| July 12, 2026 | $5 | $30 | $0.5 |