All OpenAI models

GPT-3.5 Turbo 16k

OpenAI · released August 2023

GPT-3.5 Turbo 16k is a OpenAI model with a 16K token context window — about 23 pages of text. It reads Text and replies in Text.

$3.45

input / 1M tokens

$4.60

output / 1M tokens

16K

context — about 23 pages

2.1¢

a client proposal

Pricing

Input
$3.45 per million tokens
Output
$4.60 per million tokens

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked September 23, 2026.

The numbers

Provider
OpenAI
Released
August 2023 (2023-08-28)
Context window
16K tokens — about 23 pages
Max output
4K tokens per reply
Input
Text
Output
Text
Reasoning
Answers directly
Knowledge cutoff
2021-09-30

Cost vs Token Amount

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80% Input20% Output
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GPT-3.5 Turbo 16k

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

What a task costs

2K tokens in · 500 tokens out.

GPT-3.5 Turbo 16k

OpenAI

0.92¢

for this task

75% input · 25% output

Full pricing →

Your $5 welcome credit covers about 543 of these.

Compare GPT-3.5 Turbo 16k

Closest in price on a typical task:

GPT-3.5 Turbo 16k vs Claude Sonnet 5 →GPT-3.5 Turbo 16k vs Magnum v4 72B →GPT-3.5 Turbo 16k vs Gemini 3.1 Pro Preview →GPT-3.5 Turbo 16k vs Gemini 3.1 Pro Preview Custom Tools →Any other combination →

Questions, answered

How much does GPT-3.5 Turbo 16k cost on Alyph?

GPT-3.5 Turbo 16k costs $3.45 per million input tokens and $4.60 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about 2.1¢. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on September 23, 2026.

What is GPT-3.5 Turbo 16k's context window?

16K tokens — about 23 pages. Replies can be up to 4K tokens long.

Can GPT-3.5 Turbo 16k read images and files?

GPT-3.5 Turbo 16k is text-only. The canvas still serializes uploads into plain text, so you can work with files — but it cannot see images.

Does GPT-3.5 Turbo 16k show its reasoning?

No — GPT-3.5 Turbo 16k answers directly, without a visible thinking pass.

Test GPT-3.5 Turbo 16k against Claude Sonnet 5

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

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