GPT-3.5 Turbo API pricing retired

OpenAI has scheduled GPT-3.5 Turbo for deprecation on 2026-10-23. The prices below are the last ones we recorded (data last changed 2026-10-13); plan a migration before that date.

Last prices in context

Its last price was $0.50 input / $1.50 output per 1M. The cheapest current OpenAI model, GPT-5 nano, costs $0.05 / $0.40 (26.67% of the old output price), and the closest current OpenAI model by price is GPT-4.1 mini ($0.40 / $1.60). Before migrating, re-run your own evaluation on the replacement; every current OpenAI price is on the OpenAI hub and changes appear in the monthly roundups.

Current OpenAI models

• GPT-5 nano — $0.05 / $0.40
• GPT-6 Luna — $0.10 / $0.50
• GPT-4o mini — $0.15 / $0.60
• GPT-5.6 Luna — $0.20 / $1.20
• GPT-5.4 nano — $0.20 / $1.25

Price history

No price changes recorded since tracking began on 2026-10-08.