GPT-5 mini API Cost Calculator

OpenAI's GPT-5 mini: $0.25/M input · $2/M output · $0.025/M cached input. Price your own workload below.

Presets:

What GPT-5 mini costs in practice

WorkloadInputOutputCost
Short chat message500250$0.0006
10-page document + summary7,000500$0.0027
Agent / coding session50,00010,000$0.033
1M tokens in + 1M out1,000,0001,000,000$2.25

GPT-5 mini vs nearest rivals

Closest-priced alternatives on a mixed 10K-input / 2K-output request:

ModelInput $/MTokOutput $/MTokMixed request
GPT-5 mini$0.25$2$0.0065
DeepSeek V4 Pro$0.435$0.87$0.0061
Gemini 2.5 Flash$0.3$2.5$0.0080
Mistral Large 3$0.5$1.5$0.0080

Frequently asked questions

How much does the GPT-5 mini API cost?

GPT-5 mini costs $0.25 per million input tokens and $2 per million output tokens, with cached input at $0.025 per million (90% off).

How much does a typical chat message cost with GPT-5 mini?

A short chat message (about 500 input and 250 output tokens) costs roughly $0.0006 with GPT-5 mini. At 1,000 such requests a day, that is about $18.75 per month.

Is GPT-5 mini cheap compared to similar models?

GPT-5 mini has the #7 cheapest input rate of the 26 models we track. On a mixed workload (10K input / 2K output), it costs $0.0065 per request, versus $0.0061 for DeepSeek V4 Pro and $0.0080 for Gemini 2.5 Flash.

Related

Compare all models at once ·Count tokens in your prompt

Last updated 2026-08-03. Prices verified againstOpenAI's official pricing page; see themethodology.