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

Input tokens cost 110 credits per million and output tokens 330 credits per million (1 credit = $0.10; the raw provider rates are $10.00 and $30.00 per million). New accounts start with free credits.

How long can a conversation with GPT-4 Turbo Preview be?

GPT-4 Turbo Preview has a 128K-token context window (128,000 tokens), which covers the conversation plus any documents you attach.

Does GPT-4 Turbo Preview support images and tools?

GPT-4 Turbo Preview is text-only and supports tool calling.

GPT-4 Turbo Preview

Fast and lightTools

OpenAI · Released January 2024 · Knowledge cutoff December 2023

The preview GPT-4 model with improved instruction following, JSON mode, reproducible outputs, parallel function calling, and more. Training data: up to Dec 2023. **Note:** heavily rate limited by OpenAI while...

It is part of OpenAI's GPT family, where Sol, Luna and Terra mark the current generation's capability tiers and Pro servings trade speed for deeper computation.

Facts and pricing

Provider: OpenAI
Context window: 128K tokens
Input price: 110 credits / 1M tokens ($10.00 raw)
Output price: 330 credits / 1M tokens ($30.00 raw)
Vision (image input): No
Tool calling: Yes
Extended reasoning: No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.10x margin. Raw prices shown per 1M tokens.

Try GPT-4 Turbo now

GPT-4 Turbo Preview is a serving variant of GPT-4 Turbo, so Zeplik offers the GPT-4 Turbo row and routes your prompt there.

Or open Zeplik with GPT-4 Turbo already selected

What GPT-4 Turbo Preview is best for

High-volume everyday tasks where speed and cost matter: summaries, drafts, quick questions
Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a fast and light model like GPT-4 Turbo Preview:

Summarize this article in five bullet points
Rewrite this email to be shorter and friendlier
Give me ten name ideas for a hiking newsletter
Translate this paragraph to Spanish and keep the tone

OpenAI family

Model	Context	Input cr/M	Output cr/M	Released
GPT-6 Astra	1.1M	110	550	September 2026
GPT-6 Astra Pro	1.1M	110	550	September 2026
GPT-5.6 Luna Pro	1.1M	2.2	13.2	July 2026
GPT-5.6 Luna Pro (batch)	1.1M	1.1	6.6	July 2026
GPT-5.6 Luna (batch)	1.1M	1.1	6.6	July 2026
GPT-5.6 Luna	1.1M	2.2	13.2	July 2026
GPT-5.6 Terra Pro (batch)	1.1M	11.0	66.0	July 2026
GPT-5.6 Terra Pro	1.1M	22.0	132	July 2026
GPT-5.6 Terra	1.1M	22.0	132	July 2026
GPT-5.6 Terra (batch)	1.1M	11.0	66.0	July 2026

All 90 OpenAI models

Frequently asked questions

What is GPT-4 Turbo Preview?: GPT-4 Turbo Preview is an AI model by OpenAI. The preview GPT-4 model with improved instruction following, JSON mode, reproducible outputs, parallel function calling, and more. Training data: up to Dec 2023. **Note:** heavily rate limited by OpenAI while...
How much does GPT-4 Turbo Preview cost on Zeplik?: Input tokens cost 110 credits per million and output tokens 330 credits per million (1 credit = $0.10; the raw provider rates are $10.00 and $30.00 per million). New accounts start with free credits.
How long can a conversation with GPT-4 Turbo Preview be?: GPT-4 Turbo Preview has a 128K-token context window (128,000 tokens), which covers the conversation plus any documents you attach.
Does GPT-4 Turbo Preview support images and tools?: GPT-4 Turbo Preview is text-only and supports tool calling.

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