OpenAI
AI API platform offering GPT and reasoning models for text generation, code, and multimodal tasks
OpenAI doesn't publish a pricing.md file yet.
This pricing data is community-maintained and last verified 2026-05-10.
Pricing Tiers
| Tier | Price | Includes | Overage |
|---|---|---|---|
|
Pay-as-you-go
usage based
|
Free
|
— |
GPT-4o input: $2.5/1,000,000 per tokens
GPT-4o output: $10/1,000,000 per tokens
GPT-4o mini input: $0.15/1,000,000 per tokens
GPT-4o mini output: $0.6/1,000,000 per tokens
o3 input: $2/1,000,000 per tokens
o3 output: $8/1,000,000 per tokens
o4-mini input: $1.1/1,000,000 per tokens
o4-mini output: $4.4/1,000,000 per tokens
|
Portability
Switching Cost
moderate
Open Standard
OpenAI Chat Completions API (de facto standard)
What You Lose
Fine-tuned models, assistants/threads state, prompt caching benefits, OpenAI-specific function-calling conventions
Transparency Score
B
60/100
Pricing Transparency Score
Score breakdown
✕
Publishes pricing.md
0/30
✓
Free tier available
10/10
✓
All prices public
15/15
✓
Usage pricing documented
15/15
✓
Portability documented
10/10
✓
Open standard
10/10
✕
Recently verified
0/10