How much does GPT Chat Latest cost on Zeplik?

Input tokens cost 55.0 credits per million and output tokens 330 credits per million (1 credit = $0.10; the raw provider rates are $5.00 and $30.00 per million). New accounts start with free credits.

How long can a conversation with GPT Chat Latest be?

GPT Chat Latest has a 400K-token context window (400,000 tokens), which covers the conversation plus any documents you attach.

Does GPT Chat Latest support images and tools?

GPT Chat Latest accepts image input and supports tool calling.

GPT Chat Latest

FrontierVisionTools

OpenAI · Released May 2026

GPT Chat Latest points to OpenAI's stable API alias `chat-latest` that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates...

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: 400K tokens
Input price: 55.0 credits / 1M tokens ($5.00 raw)
Output price: 330 credits / 1M tokens ($30.00 raw)
Vision (image input): Yes
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.

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What GPT Chat Latest is best for

Hard problems where answer quality matters more than cost: strategy, analysis, difficult writing
Long documents: the 400K-token window holds lengthy reports, contracts or papers whole
Working with images: screenshots, charts, photos and scanned documents alongside text
Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a frontier model like GPT Chat Latest:

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

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 Chat Latest?: GPT Chat Latest is an AI model by OpenAI. GPT Chat Latest points to OpenAI's stable API alias `chat-latest` that always resolves to the latest Instant chat model used in ChatGPT. As OpenAI rolls out new Instant model updates...
How much does GPT Chat Latest cost on Zeplik?: Input tokens cost 55.0 credits per million and output tokens 330 credits per million (1 credit = $0.10; the raw provider rates are $5.00 and $30.00 per million). New accounts start with free credits.
How long can a conversation with GPT Chat Latest be?: GPT Chat Latest has a 400K-token context window (400,000 tokens), which covers the conversation plus any documents you attach.
Does GPT Chat Latest support images and tools?: GPT Chat Latest accepts image input and supports tool calling.

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