GPT-4.5
retiredOpenAI · Frontier
Brief ultra-premium experiment at $75/$150 — the most expensive API model ever offered. Quickly superseded.
Input / 1M
$75.00
Output / 1M
$150.00
Cached input / 1M
—
Context window
128K
Where it sits
2486% above the frontier median
blended $/Mtok across 24 frontier models
Output costs 2× input
$75.00 in / $150.00 out per 1M
Held flat since launch (Feb 2025)
no blended price change recorded
Computed live from current prices and this model's history — not hand-written, so it stays accurate as prices move.
Price history
Only one price on record so far — the history chart appears once a price changes.
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 27 Feb 2025 | $75.00 | $150.00 | — | openai.com/api/pricing |