GPT-5.4
OpenAI · Mid
GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system. It features a 1M+ token context window (922K input, 128K output) with support for...
Input / 1M
$2.50
Output / 1M
$15.00
Cached input / 1M
$0.25
Context window
1.05M
Where it sits
248th-cheapest mid model
by blended $/Mtok among 262 listed mid models
885% above the mid median
blended $/Mtok across 262 mid models
Output costs 6× input
$2.50 in / $15.00 out per 1M
Cached input saves 90%
$0.25 vs $2.50 per 1M fresh
Held flat since launch (Jun 2026)
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 |
|---|---|---|---|---|---|
| 11 Jun 2026 | $2.50 | $15.00 | $0.25 | Imported from OpenRouter | openrouter.ai |