OpenAI: o3
OpenAI's o3 is a versatile AI model capable of processing text, images, and files, with a context length of 200,000 tokens and support for reasoning tools. While it excels in handling multiple modalities and can engage in complex tasks, its structured output capability remains unproven. This model should be considered by users requiring robust multi-modal input capabilities at a blended benchmark score of 77.5 across three independent evaluations. At $2.0 per million input tokens and $8.0 per million output tokens, the cost is higher than some alternatives, making it more suitable for projects with substantial budgets or where the comprehensive multimodal processing justifies the expense.
Benchmark results
Independent, published benchmarks. Blended score 77.5 across 3 benchmarks, last refreshed 2026-07-21. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| Aider Polyglot | code editing across languages | 81.3 |
| AI Index | broad capability composite | 50.2 |
| EQ-Bench | emotional understanding in dialogue | 74.7 |
- Model ID
- openai/o3
- Vendor
- openai
- Released
- April 2025
- Tokenizer
- GPT
- Input Modalities
- image, text, file
- Output Modalities
- text
- Max Output
- 100,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- yes
What it costs in practice
Computed from the current $2.00/M input and $8.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.07 |
| Classify 1,000 customer emails | 500k in / 50k out | $1.40 |
| A month of a busy support chatbot | 5M in / 2M out | $26.00 |
Category rankings
Where OpenAI: o3 places across the 12 categories it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #15 | Screenshot DebuggingVision · of 25 ranked | 139 |
| #17 | Marketing CopyWriting · of 25 ranked | 127 |
| #17 | Standardized Test PrepEducation · of 25 ranked | 127 |
| #17 | Resume WritingBusiness · of 25 ranked | 116 |
| #21 | Regex WritingCode · of 25 ranked | 132 |
| #21 | Language TranslationWriting · of 25 ranked | 132 |
| #21 | Tutoring for KidsPersonal · of 25 ranked | 132 |
| #23 | Physics TutoringEducation · of 25 ranked | 141 |
| #24 | Frontend Component DesignCode · of 25 ranked | 140 |
| #24 | Chart & Graph ReadingVision · of 25 ranked | 145 |
| #25 | Blog Post WritingWriting · of 25 ranked | 135 |
| #25 | Trip PlanningPersonal · of 25 ranked | 135 |
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Quick answers
- How much does OpenAI: o3 cost?
- $2.00 per million input tokens and $8.00 per million output tokens.
- What is OpenAI: o3's context window?
- 200,000 tokens, roughly 300 pages of text in a single request.
- Does OpenAI: o3 support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: o3 process images?
- Yes, it accepts image input.