OpenAI pricing

OpenAI API pricing: every model, per million tokens

What OpenAI costs to use and what it costs to build on, each figure carrying the day it was read.

OpenAI

OpenAI API rates

Billed per token and charged separately from any subscription. Read from the provider’s live catalogue every three hours.

Per model, cheapest first

ModelInput / 1MOutput / 1M
gpt-oss-20b$0.02$0.09
gpt-oss-120b$0.04$0.17
GPT-5 Nano$0.05$0.40
gpt-oss-safeguard-20b$0.07$0.30
GPT-6 Luna$0.10$0.50
GPT-6 Luna Pro$0.10$0.50
GPT Luna Latest$0.10$0.50
GPT-4.1 Nano$0.10$0.40
GPT-4o-mini$0.15$0.60
GPT-5.6 Luna$0.20$1.20
GPT-5.6 Luna Pro$0.20$1.20
GPT-5.4 Nano$0.20$1.25
GPT-5.1-Codex-Mini$0.25$2.00
GPT-5 Mini$0.25$2.00
GPT-4.1 Mini$0.40$1.60
GPT Audio Mini$0.60$2.40
GPT Mini Latest$0.75$4.50
GPT-5.4 Mini$0.75$4.50
GPT-3.5 Turbo (older v0613)$1.00$2.00
o4 Mini$1.10$4.40
o4 Mini High$1.10$4.40
o3 Mini High$1.10$4.40
o3 Mini$1.10$4.40
GPT-5.1-Codex-Max$1.25$10.00
GPT-5.1$1.25$10.00
GPT-5.1-Codex$1.25$10.00
GPT-5$1.25$10.00
GPT-3.5 Turbo Instruct$1.50$2.00
GPT-5.3-Codex$1.75$14.00
GPT-5.2-Codex$1.75$14.00
GPT-5.2$1.75$14.00
GPT-5.2 Chat$1.75$14.00
GPT-6.1 Sol$2.00$10.00
GPT-6.1 Sol Pro$2.00$10.00
GPT-6 Sol$2.00$10.00
GPT-6 Sol Pro$2.00$10.00
GPT Sol Latest$2.00$10.00
GPT Terra Latest$2.00$12.00
GPT-5.6 Sol$2.00$10.00
GPT-5.6 Sol Pro$2.00$10.00

Recent price changes

All OpenAI price changes →

Questions

How much does the OpenAI API cost?
OpenAI models range from $0.02 per million input tokens (gpt-oss-20b) upwards. Every model's input and output rate is listed on this page, confirmed and dated.
How often do OpenAI prices change?
1 recent price change are listed on this page, each linking to the model it affected. Catalogue prices are re-read every three hours, so a change appears the same day it is published.
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