GPT-3.5 Turbo API Pricing
OpenAI · 16K context window · Best for legacy, cheapest OpenAI chat model
Last updated April 25, 2026 · Data refreshed every 6 hours
Input
$0.50
Output
$1.50
Context
16K
Vendor
OpenAI
All prices in USD per million tokens. Live as of April 25, 2026.
Cost Examples
| Workload | Tokens | Cost |
|---|---|---|
| 1M chat messages (~500 tok in / 500 tok out) | 1000M | $1000.00 |
| Process 10K PDFs (~2K tok each, output 200 tok) | 22M | $13.00 |
| Generate 100K tweets (~280 tok out, 50 tok prompt) | 33M | $44.50 |
| 1 chatbot conversation per user × 10K users (~5K tok each) | 50M | $50.00 |
| Summarize 1K technical articles (~5K in / 500 out) | 6M | $3.25 |
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