OpenAIGPT-3.5 Turbo 16k pricing
$3.00 per 1M input tokens and $4.00 per 1M output tokens. In real work that is 0.28¢ per chat answer and 4.1¢ to summarize a 20-page PDF.
What GPT-3.5 Turbo 16k costs per task
Token counts estimated from a measured model of the same lab (GPT-6.1 Sol), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 0.28¢$2.79 / 1,000 | 45 in · 560 out · 103 reasoning | 186 of 336 | estimated |
| Reply to a customer email | 0.13¢$1.28 / 1,000 | 258 in · 126 out | 186 of 336 | estimated |
| Write a 1,500-word blog post | 0.93¢$9.33 / 1,000 | 59 in · 2,116 out · 172 reasoning | 176 of 336 | estimated |
| Write 10 product descriptions | 0.55¢$5.55 / 1,000 | 283 in · 1,103 out · 72 reasoning | 165 of 336 | estimated |
| Translate 1,000 words | 0.93¢$9.32 / 1,000 | 1,330 in · 1,289 out · 44 reasoning | 182 of 336 | estimated |
| Proofread one page (500 words) | 0.48¢$4.80 / 1,000 | 718 in · 662 out | 221 of 336 | estimated |
| Summarize a 20-page PDF | 4.1¢$40.99 / 1,000 | 12,987 in · 482 out · 26 reasoning | 289 of 336 | estimated |
| Extract data from an invoice | 0.29¢$2.92 / 1,000 | 373 in · 450 out | 192 of 336 | estimated |
| Analyze a 200-row spreadsheet | 4.4¢$44.23 / 1,000 | 4,779 in · 919 out · 6,553 reasoning | 235 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 1.3¢$12.84 / 1,000 | 3,690 in · 442 out | 260 of 336 | estimated |
| Classify 100 support tickets | 0.59¢$5.86 / 1,000 | 1,261 in · 442 out · 77 reasoning | 158 of 336 | estimated |
| Review 500 lines of code | 3.0¢$29.58 / 1,000 | 4,557 in · 1,135 out · 2,843 reasoning | 223 of 336 | estimated |
| Write a SQL query | 0.22¢$2.21 / 1,000 | 126 in · 312 out · 147 reasoning | 170 of 336 | estimated |
| Run a 50-step coding agent | $6.77$6,772 / 1,000 | 2,237,500 in · 15,000 out | 323 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving GPT-3.5 Turbo 16k through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
 Azureunknown | $3.00 / $4.00 | - | 16K | |
OpenAIunknown | $3.00 / $4.00 | - | 16K |
Price history
First seen in our price history on Mar 26, 2024 at $3.00 input / $4.00 output. The list price has not changed since.
FAQ
How much does GPT-3.5 Turbo 16k cost?
GPT-3.5 Turbo 16k costs $3.00 per 1 million input tokens and $4.00 per 1 million output tokens (list price on Oct 18, 2026). In practice one chat answer costs about 0.28¢ and summarizing a 20-page PDF about 4.1¢.
Where is GPT-3.5 Turbo 16k cheapest?
Among 2 providers we track, the lowest list price today is at Azure: $3.00 input and $4.00 output per 1M tokens.
Is the GPT-3.5 Turbo 16k cost per task measured or estimated?
Estimated: GPT-3.5 Turbo 16k was not run directly. Tokens come from GPT-6.1 Sol and are rescaled by the tokenizer of OpenAI. Real usage can differ.