GPT-5 Chat

OpenAI · Released August 2025 · Knowledge cutoff September 2024

GPT-5 Chat is designed for advanced, natural, multimodal, and context-aware conversations for enterprise applications.

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

13.8 credits / 1M tokens ($1.25 raw)

Output price

110 credits / 1M tokens ($10.00 raw)

Vision (image input)

Yes

Tool calling

No

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.

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What GPT-5 Chat is best for

• Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
• Working with images: screenshots, charts, photos and scanned documents alongside text

Example prompts

Prompts that suit a frontier model like GPT-5 Chat:

• Review this business plan and give me the three hardest questions an investor would ask
• Rewrite this announcement so it lands with both engineers and executives
• I am choosing between two job offers, help me think through the tradeoffs
• Draft a technical design doc for a rate limiter, including failure modes

OpenAI family

All 68 OpenAI models

Frequently asked questions

What is GPT-5 Chat?

GPT-5 Chat is an AI model by OpenAI. GPT-5 Chat is designed for advanced, natural, multimodal, and context-aware conversations for enterprise applications.

How much does GPT-5 Chat cost on Zeplik?

Input tokens cost 13.8 credits per million and output tokens 110 credits per million (1 credit = $0.10; the raw provider rates are $1.25 and $10.00 per million). New accounts start with free credits.

How long can a conversation with GPT-5 Chat be?

GPT-5 Chat has a 128K-token context window (128,000 tokens), which covers the conversation plus any documents you attach.

Does GPT-5 Chat support images and tools?

GPT-5 Chat accepts image input and does not support tool calling.

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