GPT-3.5 Turbo 16k API Cost Calculator
Estimate your monthly API costs for GPT-3.5 Turbo 16k from Openai.
Pricing per 1M tokens
Pricing last verified: Mar 21, 2026
30-Day Price History
Solid line: input price · Dashed line: output price
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Cost Breakdown
Compare with Similar Models
| Model | Input/1M | Output/1M |
|---|---|---|
| GPT-IMAGE-1 Openai | $5.00 | $1.25 |
| GPT-IMAGE-1.5 Openai | $5.00 | $1.25 |
| o3 Mini Openai | $1.10 | $4.40 |
| o3 Mini High Openai | $1.10 | $4.40 |
| o4 Mini Openai | $1.10 | $4.40 |
Frequently Asked Questions
How much does GPT-3.5 Turbo 16k cost per token?
GPT-3.5 Turbo 16k is priced at $3.00 per 1M input tokens and $4.00 per 1M output tokens. Use the calculator above to estimate your monthly costs based on your usage volume.
What is the context window for GPT-3.5 Turbo 16k?
GPT-3.5 Turbo 16k has a context window of 16.4K tokens (16,385 tokens). The maximum output length is 4.1K tokens.
Does GPT-3.5 Turbo 16k support function calling (tool use)?
Yes, GPT-3.5 Turbo 16k supports function calling (also called tool use). You can define custom functions that the model can invoke as part of its responses.
How does GPT-3.5 Turbo 16k compare to similar models?
GPT-3.5 Turbo 16k costs $3.00 input and $4.00 output per 1M tokens. o4 Mini is less expensive at $1.10 input and $4.40 output per 1M tokens. See the "Compare with Similar Models" table above, or visit the o4 Mini page at /tools/cost-calculator/openai/o4-mini.