GPT-5.1-Codex-Mini
OpenAI · Mid
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
Input / 1M
$0.25
Output / 1M
$2.00
Cached input / 1M
$0.025
Context window
400K
Where it sits
143rd-cheapest mid model
by blended $/Mtok among 262 listed mid models
20% above the mid median
blended $/Mtok across 262 mid models
Output costs 8× input
$0.25 in / $2.00 out per 1M
Cached input saves 90%
$0.025 vs $0.25 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 | $0.25 | $2.00 | $0.025 | Imported from OpenRouter | openrouter.ai |