OpenAI
GPT-3.5 Turbo 16k API pricing
GPT-3.5 Turbo 16k is OpenAI’s model on the API market, released 28 Aug 2023. Prices are per million tokens in USD, as last read from the price list.
$3.00Input / 1M
$4.00Output / 1M
16KContext
4KMax output
Specification
USD per million tokens- Provider
- OpenAI
- Model id
openai/gpt-3.5-turbo-16k- Input
- $3.00
- Output
- $4.00
- Cached input
- Not published
- Context window
- 16K tokens
- Maximum output
- 4K tokens
- Takes
- text
- Returns
- text
- Tool use
- Yes
- Reasoning
- Not reported
- Released
- 28 Aug 2023
- First tracked
- 17 Sept 2026
At $3.00 per million input tokens, GPT-3.5 Turbo 16k is dearer than 291 of the 326 models on the price list.
Price changes
Tracked since 17 Sept 2026No price change has been recorded since tracking began on 17 Sept 2026. Prices are checked every six hours, and any change is listed here and on model changes.
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Prices and specifications come from OpenRouter’s catalogue, last read 17 Sept 2026. A provider’s own price may differ; how this is collected.