Every line, version by version
GPT-5.6 sol vs GPT-5 nano: prices per token, context window, benchmark scores, and what changed between the two versions.
Prices are read live from the provider pricing pages, so this table cannot go stale.
| Version | Tier | Status | Released | Input | Output | Cached | Context | Blended /1M | Sample /mo |
|---|---|---|---|---|---|---|---|---|---|
5.6 Promotional pricing ($4 / $20 / $0.40) is available at least through 2026-11-21; the pre-promo rate was $5 / $30. Re-check after that date. Price your own usage | Flagship | Active | — | $4.00 | $20.00 | $0.400 | 1,050K | $12.00 | $23.00Long context ≥272,000 |
GPT-5 nanoCheapest 5 Replaced by GPT-6 series; kept for long-tail search. Price your own usage | Lite | Legacy | — | $0.050 | $0.400 | $0.0050 | 400K | $0.225 | $0.250 |
Sample cost = 1M input + 500K output tokens per month at list price. A model with a long-context band is priced on that band — the rule is printed in the row. Use the calculator below for your own workload.
Only one version of this line has a verifiable score set so far, so there is nothing to compare it against yet.
Adjust the monthly volume — every version of the line recomputes instantly.
List price only: cached input, batch discounts and off-peak rates are not included. The sample column prices 1M input + 500K output tokens per month.