All OpenAI models

GPT-4 Turbo Preview

OpenAI · released January 2024

GPT-4 Turbo Preview is a OpenAI model with a 128K token context window — about 180 pages of text. It reads Text and replies in Text.

$11.50

input / 1M tokens

$34.50

output / 1M tokens

128K

context — about 180 pages

$0.09

a client proposal

Pricing

Input
$11.50 per million tokens
Output
$34.50 per million tokens

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
OpenAI
Released
January 2024 (2024-01-25)
Context window
128K tokens — about 180 pages
Max output
4K tokens per reply
Input
Text
Output
Text
Reasoning
Answers directly
Knowledge cutoff
2023-12-31

Cost vs Token Amount

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80% Input20% Output
free$8.05$16.100 tokens250k500k750k1000k
GPT-4 Turbo Preview

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-4 Turbo Preview

OpenAI

4¢

for this task

57% input · 43% output

Full pricing →

Your $5 welcome credit covers about 124 of these.

Compare GPT-4 Turbo Preview

Closest in price on a typical task:

GPT-4 Turbo Preview vs GPT-4 Turbo →GPT-4 Turbo Preview vs Claude Fable 5 →GPT-4 Turbo Preview vs Claude Opus 4.8 (Fast) →GPT-4 Turbo Preview vs Claude Opus 5 (Fast) →Any other combination →

Questions, answered

How much does GPT-4 Turbo Preview cost on Alyph?

GPT-4 Turbo Preview costs $11.50 per million input tokens and $34.50 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about $0.09. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is GPT-4 Turbo Preview's context window?

128K tokens — about 180 pages. Replies can be up to 4K tokens long.

Can GPT-4 Turbo Preview read images and files?

GPT-4 Turbo Preview is text-only. The canvas still serializes uploads into plain text, so you can work with files — but it cannot see images.

Does GPT-4 Turbo Preview show its reasoning?

No — GPT-4 Turbo Preview answers directly, without a visible thinking pass.

Test GPT-4 Turbo Preview against GPT-4 Turbo

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

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