GPT-3.5 Turbo
retiredOpenAI · Small
The ChatGPT API model — *the* price-decline story, with three cuts in under a year taking it from $2/$2 to $0.50/$1.50. Replaced by GPT-4o mini in July 2024.
Input / 1M
$0.5
Output / 1M
$1.50
Cached input / 1M
—
Context window
16K
Where it sits
7% above the small median
blended $/Mtok across 5 small models
Output costs 3× input
$0.5 in / $1.50 out per 1M
Down 63% since launch (Mar 2023)
blended price vs launch
Computed live from current prices and this model's history — not hand-written, so it stays accurate as prices move.
Price history
Input (solid)Output (dashed)
Blended price change (3:1 I/O mix)
- 30d
- —
- 90d
- —
- 1y
- —
- Since launch
- decreased 62.5%
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 25 Jan 2024 | $0.5 | $1.50 | — | gpt-3.5-turbo-0125 — third cut in a year | openai.com/pricing |
| 6 Nov 2023 | $1.00 | $2.00 | — | gpt-3.5-turbo-1106, announced at DevDay | openai.com/pricing |
| 13 Jun 2023 | $1.50 | $2.00 | — | 25% input price cut | openai.com/pricing |
| 1 Mar 2023 | $2.00 | $2.00 | — | Launch at $0.002/1K tokens, flat across input and output | openai.com/pricing |