GPT-5.3 Chat
OpenAI · Mid
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...
Input / 1M
$1.75
Output / 1M
$14.00
Cached input / 1M
$0.175
Context window
128K
Where it sits
241st-cheapest mid model
by blended $/Mtok among 262 listed mid models
742% above the mid median
blended $/Mtok across 262 mid models
Output costs 8× input
$1.75 in / $14.00 out per 1M
Cached input saves 90%
$0.175 vs $1.75 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 | $1.75 | $14.00 | $0.175 | Imported from OpenRouter | openrouter.ai |