OpenAI: o3
OpenAI's o3 model supports image, text, and file inputs; it can process up to 200,000 tokens of context and offers reasoning capabilities along with support for tools. While structured output is not provided, the model excels in handling complex tasks across multiple modalities. This model should be considered by those who require extensive contextual understanding and need access to diverse input types; however, its high price point at $2.0 per million input tokens and $8.0 per million output tokens might make it less suitable for smaller projects or frequent use cases. Its blended benchmark score of 77.7 across three independent benchmarks indicates strong performance but may not be the best choice if cost is a primary concern.
Benchmark results
Independent, published benchmarks. Blended score 77.7 across 3 benchmarks, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| Aider Polyglot | code editing across languages | 81.3 |
| AI Index | broad capability composite | 51.3 |
| 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 |
Similar models
OpenAI: GPT-5.6 Luna Pro
OpenAI: GPT-5.6 Luna Pro (batch)
OpenAI: GPT-5.6 Luna
OpenAI: GPT-5.6 Luna (batch)
OpenAI: GPT-5.6 Terra Pro
OpenAI: GPT-5.6 Terra Pro (batch)
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.