GPT-4o
OpenAI's default gpt-4o through API.
You always get the exact model you pick — we never silently route you to another.
About GPT-4o
Speed is GPT-4o's defining trait. Where comparable models average 61 tokens per second, GPT-4o delivers nearly 200 — and its native audio pipeline hits 320ms response latency, making it the practical choice for voice interfaces and real-time chat. It also collapses text, image, and audio processing into a single unified model rather than routing across separate systems, which produces more coherent multimodal reasoning without the awkward handoffs. Users feel this difference acutely. When OpenAI tried to retire GPT-4o in early 2026, the backlash was fierce enough to reverse the decision — petitions, mass unsubscribe threats, and user surveys suggesting 95% found no adequate replacement. That kind of loyalty comes from how the model feels in practice: snappy, versatile, fluent across 50+ languages, and capable of web search that reasoning-focused models like o1 lack. The honest caveat: GPT-4o trades raw reasoning depth for speed. It scores below average on Artificial Analysis's Intelligence Index and struggles with complex multi-step logic. For hard reasoning or large-document tasks, newer models outclass it. For fast, general-purpose, multimodal work, few match it.
Best for
- Real-time voice assistants and live chat applications where sub-400ms response latency matters
- Multimodal workflows combining text, images, and audio in a single coherent pipeline
- General-purpose tasks — creative writing, translation, summarization, and Q&A across 50+ languages
- Web-enabled research and browsing tasks (unavailable in o1/o3 reasoning models)
- Rapid prototyping and iteration cycles where response speed accelerates the feedback loop
Specifications
| Provider | OpenAI |
|---|---|
| Released | 2024-05-13 |
| Intelligence | Low |
| Speed | Fast |
| Context window | 128,000 tokens |
| Knowledge cutoff | October 2023 |
| Input price | $2.50 / 1M tokens |
| Output price | $10.00 / 1M tokens |
| Request cost | 1 premium request |
| Plan tier | Premium |
| Model ID | gpt-4o |
OpenAI retired GPT‑4o inside ChatGPT on February 13, 2026. It remains available through the OpenAI API and here on just4o.chat.
Frequently asked questions
Input is $2.50 per million tokens, output is $10.00 per million tokens. Cached input drops to $1.25/M. A blended real-world rate works out to roughly $2.46/M tokens.
128,000 tokens. That covers long documents and extended conversations, though newer models like GPT-4.1 offer up to 1 million tokens if you need to process very large files.
It handles everyday coding tasks well, but it is not OpenAI's strongest model for complex multi-step code and automation workflows — GPT-4.5 or GPT-5 are better choices for those.
Yes. Unlike OpenAI's o1 and o3 reasoning models, GPT-4o supports web search, making it suitable for tasks that require current information beyond its October 2023 knowledge cutoff.
GPT-4o is significantly faster and cheaper but scores below average on reasoning benchmarks. GPT-4.1 offers a 1M-token context window and stronger performance on complex tasks at a higher cost.
Yes. OpenAI scheduled it for removal in February 2026 but reversed course after widespread user backlash. It remains available in both ChatGPT and the API alongside newer models.