Question 1

What does the GPT-4o mini API cost?

Accepted Answer

The official OpenAI list price is $0.150 per 1M input tokens and $0.600 per 1M output tokens. Cached input is $0.075 per 1M tokens, 2× cheaper than the regular input.

Question 2

How much does 1 million tokens of GPT-4o mini cost?

Accepted Answer

1M input tokens cost $0.150, 1M output tokens — $0.600. With a 1:1 input/output load a million tokens works out to about $0.375. Chatbots with long context push the blended price down; code generation pushes it up.

Question 3

Where is the GPT-4o mini API cheapest?

Accepted Answer

Our measurements show RunAPI as the cheapest: 94% below the official price. Quotes from 3 providers refresh daily — see the table above.

Question 4

What is the GPT-4o mini context window?

Accepted Answer

The context window is 200K tokens. Some vendors raise the price above a context threshold — check the plan notes.

Question 5

How do I check that a provider key works?

Accepted Answer

The free checker sends a GET request to your endpoint's model list and reports status and latency. The key is not stored server-side.

#	Provider	1M input	1M output	Discount	Tokens per $100
—	Official list	$0.150	$0.600	0%	444M
1	RunAPI	$0.0090	$0.036	−94%	7.41B
2	Crazyrouter	$0.023	$0.090	−85%	2.96B
3	Polza.ai	$0.220	$0.881	—	303M

Cheapest GPT-4o mini API: RunAPI is 94% below the official price

What to check before buying