GPT-4o (2024-05-13)

OpenAI · Released May 2024 · Knowledge cutoff October 2023

GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs.

It is part of OpenAI's GPT family, where GPT-6 Astra leads, GPT-6 Sol and GPT-6 Luna cover the capability and speed tiers below it, the GPT-5.6 generation sits behind them, and Pro servings trade speed for deeper computation.

Facts and pricing

Provider

OpenAI

Context window

128K tokens

Input price

60.0 credits / 1M tokens ($5.00 raw)

Output price

180 credits / 1M tokens ($15.00 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 1.20x margin. Raw prices shown per 1M tokens.

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What GPT-4o (2024-05-13) 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
• 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-4o (2024-05-13):

• 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 71 OpenAI models

Model comparisons

• Claude Opus 5.5 vs GPT-6 Astra
• Claude Opus 5.5 vs GPT-6 Sol
• GPT-6 Sol vs GPT-5.6 Sol
• GPT-6 Sol vs GPT-6 Astra

Frequently asked questions

What is GPT-4o (2024-05-13)?

GPT-4o (2024-05-13) is an AI model by OpenAI. GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs.

How much does GPT-4o (2024-05-13) cost on Zeplik?

Input tokens cost 60.0 credits per million and output tokens 180 credits per million (1 credit = $0.10; the raw provider rates are $5.00 and $15.00 per million). New accounts start with free credits.

How long can a conversation with GPT-4o (2024-05-13) be?

GPT-4o (2024-05-13) has a 128K-token context window (128,000 tokens), which covers the conversation plus any documents you attach.

Does GPT-4o (2024-05-13) support images and tools?

GPT-4o (2024-05-13) accepts image input and supports tool calling.

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