OpenAI: GPT-4o (extended)
Analysis Summary
This extended variant of GPT-4o retains the same multimodal input handling, tool use and function calling as the standard model but is priced higher, presumably for extended output length rather than improved reasoning or coding performance.
It suits use cases requiring longer generated outputs, such as extended reports or lengthy structured documents, where the standard model's output limits are a constraint. It does not offer any measurable capability advantage over the base GPT-4o for reasoning or coding tasks.
Businesses should only choose this variant when output length is the binding constraint; otherwise the standard GPT-4o or a newer model offers better value.
Assessed July 25, 2026
Editorial notes
GPT-4o (extended) offers the same multimodal capability as standard GPT-4o with extended output limits, at a higher price point without additional benchmark gains.
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DFO Verdict
GPT-4o (extended) offers the same multimodal capability as standard GPT-4o with extended output limits, at a higher price point without additional benchmark gains.
How OpenAI: GPT-4o (extended) compares
Its 128K-token context window is larger than 38% of the models we list. At $6.00 per million input tokens it is cheaper than 5% of comparable models.
Dark bar = input · light bar = output, scaled to the priciest peer.
1M tokens ≈ 8 full-length novels or ~2,500 pages of business documents in a single request.
Strongest on value. The pulled-in technical corner is the trade-off, and if the shape matters more than the price, this is your model.
Compare shapes side-by-side →Pricing
| Token Type | Cost per 1M tokens | Cost per 1K tokens |
|---|---|---|
| Input | $6.00 | $0.006000 |
| Output | $18.00 | $0.018000 |
What would OpenAI: GPT-4o (extended) cost your business?
Pick the job that looks most like yours, then fine-tune with the sliders. Estimates update live.
A website chatbot handling around 100 customer conversations a day, a few short messages each.
Full calculator with 688 models → Price Calculator
These numbers get smaller with the right architecture.
We route routine calls to cheap models and save OpenAI: GPT-4o (extended) for the hard ones. Most clients cut their estimate by 60-80%.
Talk to our teamAbout OpenAI: GPT-4o (extended)
GPT-4o ("o" for "omni") is OpenAI's latest AI model, supporting both text and image inputs with text outputs. It maintains the intelligence level of GPT-4 Turbo while being twice as..
Frequently asked questions about OpenAI: GPT-4o (extended)
How much does OpenAI: GPT-4o (extended) cost?
OpenAI: GPT-4o (extended) costs $6.00 per million input tokens and $18.00 per million output tokens.
What is the context window of OpenAI: GPT-4o (extended)?
OpenAI: GPT-4o (extended) has a context window of 128,000 tokens (128K).
What can OpenAI: GPT-4o (extended) do?
OpenAI: GPT-4o (extended) supports image/vision input, tool use, and function calling.
Who created OpenAI: GPT-4o (extended)?
OpenAI: GPT-4o (extended) is developed by OpenAI and was released on May 13, 2024.
