Free tool
OpenAI API cost calculator
Enter how your app uses the API. The calculator shows the cost on every current OpenAI model, per request, per day and per month. It also shows if the free DreamPrompting API can carry the same load.
On OpenAI · gpt-6.1-sol
1,900,000 tokens a day
On DreamPrompting
$0
This load fits the free tier: 5,000 requests and 500,000 tokens in each 24 hours. No card.
Get a free API key$9 for 30 days
This load is more than the free daily quota. Pro removes the daily quota, up to 30,000,000 tokens in 30 days.
See Pro$0 with your own provider key
This load is more than the Pro limit. Add your own key from Groq, Google or another provider. Requests on your key have no quota here.
How your own key worksDreamPrompting does not serve GPT-6 or other closed OpenAI models. It serves open-weight models, for example gpt-oss-120b, which is OpenAI's own open-weight model. Test the quality on your task before you move.
The same load on every OpenAI model
Cheapest first. The table changes when you change the inputs.
| Model | Input | Cached | Output | Per month |
|---|---|---|---|---|
gpt-5-nanoCheapest OpenAI text model |
$0.05 | $0.005 | $0.4 | $7.05 |
gpt-6-lunaGPT-6 small |
$0.1 | $0.01 | $0.5 | $10.50 |
gpt-4o-mini |
$0.15 | $0.075 | $0.6 | $13.95 |
gpt-5.6-luna |
$0.2 | $0.02 | $1.2 | $23.40 |
gpt-5.4-nano |
$0.2 | $0.02 | $1.25 | $24.00 |
gpt-5-mini |
$0.25 | $0.025 | $2.0 | $35.25 |
gpt-4.1-mini |
$0.4 | $0.1 | $1.6 | $37.20 |
gpt-5.4-mini |
$0.75 | $0.075 | $4.5 | $87.75 |
o4-miniReasoning |
$1.1 | $0.275 | $4.4 | $102 |
gpt-6.1-terraGPT-6.1 mid size |
$1.0 | $0.05 | $5.0 | $105 |
o3Reasoning |
$2.0 | $0.5 | $8.0 | $186 |
gpt-6.1-solGPT-6.1 flagship |
$2.0 | $0.1 | $10.0 | $210 |
gpt-5.6-terra |
$2.0 | $0.2 | $12.0 | $234 |
gpt-5.6-solPromotional price until at least 2026-11-21 |
$4.0 | $0.4 | $20.0 | $420 |
gpt-5.5 |
$5.0 | $0.5 | $30.0 | $585 |
gpt-6-astraLargest GPT-6 |
$10.0 | $1.0 | $50.0 | $1,050 |
Standard prices in USD per 1M tokens, for prompts up to 272K tokens. Batch, flex and long-context prices are not included. Source: OpenAI pricing, checked 2026-11-02.
Move your code in one line
DreamPrompting uses the OpenAI API format. Keep the OpenAI SDK and change the base URL and the key.
from openai import OpenAI
client = OpenAI(
base_url="https://dreamprompting.com/api/v1",
api_key="YOUR_DREAMPROMPTING_KEY",
)
resp = client.chat.completions.create(
model="groq/openai/gpt-oss-120b",
messages=[{"role": "user", "content": "Hello"}],
)