API Credits
OpenAI API Cost Calculator
Estimate OpenAI API costs by model and token count — compare GPT-4o, GPT-4o mini, and o-series pricing.
By AI Credits Editorial · Content updated 2026-08-28
Calculate your API cost
Enter token counts and pick a model to estimate request cost.
Cheapest options for this workload
Same token counts ranked by estimated list price.
| Model | Input / 1M | Output / 1M | Est. total | |
|---|---|---|---|---|
GPT-4o miniCheapest OpenAI | $0.150/1M | $0.600/1M | $0.045 | Free credits |
Gemini 2.5 Flash Google | $0.150/1M | $0.600/1M | $0.045 | Free credits |
Claude Haiku Anthropic | $0.250/1M | $1.25/1M | $0.087 | Free credits |
Gemini 2.5 Pro Google | $1.25/1M | $10.00/1M | $0.625 | Free credits |
GPT-4o OpenAI | $2.50/1M | $10.00/1M | $0.750 | Free credits |
Claude Sonnet Anthropic | $3.00/1M | $15.00/1M | $1.05 | Free credits |
Prices are approximate public list rates. Verify on each provider's pricing page before budgeting.
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