Longterm Wiki has not been actively maintained since May 2026. Some data is still updated occasionally, but please don't rely on this site being current or accurate.
GPT-4.1 mini was released April 14, 2025 alongside GPT-4.1. A cost-efficient variant with the same 1M token context window. Priced at \$0.40/\$1.60 per million tokens — nearly 3x cheaper than GPT-4o mini with better performance.