O-series reasoning model for hard analysis, math, coding, and planning
Specification
openai listing
Context
200K
Max output
100K
Released
2025-03-19
Knowledge cutoff
2023-09
Retires
2026-10-23
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · openai list price
Input
$150.00
Output
$600.00
Cache read
$75.00
Batch and priority prices
US dollars per million tokens · per listing
| Price | Listing | $/M |
|---|---|---|
| Batch input | openai | $75.00 |
| Batch output | openai | $300.00 |
Batch input is 50% below the interactive input price at the same listing.
Available from 6 hosts
Price history
append-only observations · a listing writes a row only when its price moves
| Date | Host | Field | $/M |
|---|---|---|---|
| 2026-09-02 | openrouter | Input | $150.00 |
| 2026-09-06 | openrouter | Input | $150.00 |
| 2026-09-02 | openrouter | Output | $600.00 |
| 2026-09-06 | openrouter | Output | $600.00 |
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