GPT-3.5 Turbo API Cost Calculator
Estimate your monthly API costs for GPT-3.5 Turbo 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-4.1 Mini Openai | $0.4000 | $1.60 |
| GPT-IMAGE-1-MINI Openai | $2.00 | $0.2000 |
| GPT-5 Mini Openai | $0.2500 | $2.00 |
| GPT-5.1-Codex-Mini Openai | $0.2500 | $2.00 |
| GPT-5.4 Nano Openai | $0.2000 | $1.25 |
Frequently Asked Questions
How much does GPT-3.5 Turbo cost per token?
GPT-3.5 Turbo is priced at $0.5000 per 1M input tokens and $1.50 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?
GPT-3.5 Turbo has a context window of 16.4K tokens (16,385 tokens). The maximum output length is 4.1K tokens.
Does GPT-3.5 Turbo support function calling (tool use)?
Yes, GPT-3.5 Turbo 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 compare to similar models?
GPT-3.5 Turbo costs $0.5000 input and $1.50 output per 1M tokens. GPT-5.4 Nano is less expensive at $0.2000 input and $1.25 output per 1M tokens. See the "Compare with Similar Models" table above, or visit the GPT-5.4 Nano page at /tools/cost-calculator/openai/gpt-5-4-nano.