openai/gpt-5.5-instant| Provider | Input, $ per 1M | Output, $ per 1M | In our data since |
|---|---|---|---|
| ZenMux | $5 | $30 | 31 Jul 2026 |
Only the base tier and only per-token prices are shown. Batch, discounted and cached rates, as well as prices per image or per second of video, do not go into this table: they cannot stand in the same column as a price per million tokens.
The date in the last column is the day this price first entered our collection. The price may well be older: before that day we simply were not recording it. It has not changed since — otherwise a new row with a new date would stand in its place.
| Task set | Result | Run conditions | Measured by |
|---|---|---|---|
| Arena Score, programming | 1,434.45 1,427–1,442 | — | — |
| Arena Score, multi-turn dialogue | 1,434.27 1,425–1,444 | — | — |
| Arena Score in Russian | 1,431.42 1,420–1,443 | — | — |
| Arena Score in Spanish | 1,429.62 1,407–1,452 | — | — |
| Arena Score in French | 1,427.7 1,407–1,448 | — | — |
| Arena Score, hard prompts | 1,426.89 1,421–1,433 | — | — |
| Arena Score, mathematics | 1,423.07 1,407–1,439 | — | — |
| Arena Score, long queries | 1,422.53 1,416–1,429 | — | — |
| Arena Score, creative writing | 1,420.47 1,411–1,430 | — | — |
| Arena Score, overall | 1,419.68 1,415–1,425 | — | — |
| Arena Score in English | 1,418.15 1,412–1,425 | — | — |
| Arena Score, expert questions | 1,415.65 1,403–1,428 | — | — |
| Arena Score, instruction following | 1,407.84 1,401–1,415 | — | — |
| Arena Score, understanding diagrams | 1,276.21 1,262–1,290 | — | — |
| Arena Score, text recognition in images | 1,256.18 1,247–1,266 | — | — |
| Arena Score, working with images | 1,250.81 1,242–1,260 | — | — |