Curiosity · AI Model
GPT-4o Vision
GPT-4o Vision refers to the image-understanding side of OpenAI's GPT-4o (omni) model — a unified multimodal transformer that processes text, images, and audio in the same token stream. In contrast to the earlier GPT-4V add-on, GPT-4o Vision is native: images are encoded and reasoned about in the same model that generates replies. It became the default VLM in ChatGPT and the OpenAI API from May 2024 and underpins screenshot QA, chart reading, OCR, and multi-image reasoning workflows.
Model specs
- Vendor
- OpenAI
- Family
- GPT-4o
- Released
- 2024-05
- Context window
- 128,000 tokens
- Modalities
- text, vision, audio
- Input price
- $2.5/M tok
- Output price
- $10/M tok
- Pricing as of
- 2026-04-20
Strengths
- Native multimodal training — no lossy image captioning middle step
- Strong instruction following on image+text prompts
- Handles multi-image inputs and comparison reasoning
- Competitively priced vs earlier GPT-4V
Limitations
- Weaker dense-OCR on low-resolution scans than specialised OCR stacks
- Rate limits on image inputs more restrictive than text
- Resolution cap limits tiny-text legibility
- Video is frame-sampled, not true temporal understanding
Use cases
- Document and form understanding
- Chart and table extraction from screenshots
- Accessibility tooling — alt-text and scene description
- Multimodal chat in ChatGPT and custom apps
Benchmarks
| Benchmark | Score | As of |
|---|---|---|
| MMMU | ≈69% | 2024-05 |
| DocVQA | ≈92% | 2024-05 |
| ChartQA | ≈85% | 2024-05 |
Frequently asked questions
What is GPT-4o Vision?
It is the image-understanding capability of OpenAI's GPT-4o — the same model handles text and images natively in one transformer, rather than via a bolted-on vision encoder.
Is GPT-4o Vision the same as GPT-4V?
GPT-4V was the 2023 vision add-on for GPT-4. GPT-4o Vision is its successor, built into GPT-4o's unified multimodal architecture from May 2024.
What can GPT-4o Vision read?
Photos, screenshots, charts, diagrams, tables, handwriting, and multi-page documents. It is the default VLM behind ChatGPT's image uploads.
Sources
- OpenAI — Hello GPT-4o — accessed 2026-04-20
- OpenAI API — Vision guide — accessed 2026-04-20