OpenAI API
The OpenAI API gives you programmatic access to every model OpenAI ships: leading models for general intelligence, advanced models for cost-efficient production work,…
Our verdict
Who it's for
Programmatic access to OpenAI's full model lineup: GPT-5.5, o3, gpt-image-1
Who should look elsewhere
Can get expensive at scale
Pros
- +Most capable models available
- +Excellent documentation
- +Reliable infrastructure
Cons
- −Can get expensive at scale
- −Rate limits require planning
- −OpenAI policy restrictions
Key features
- ✓GPT-4
- ✓GPT-3.5 Turbo
- ✓DALL-E 3
- ✓Whisper
- ✓Embeddings
- ✓Fine-tuning
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Pay as you go | — | month | GPT-5.5 ($5/$30 per 1M, 1M context); GPT-5.4 ($2.50/$15, recommended default); GPT-4.1 / 4.1 mini / 4.1 nano (from $0.10/$0.40) |
| Batch API | — | month | 50% discount on all token pricing; 24-hour async turnaround; Same models as the real-time API |
| GPT-5.5 Pro | — | month | $30 input / $180 output per 1M tokens; Highest-precision variant for critical workloads; No cached-input discount |