Friday, April 24, 2026 · 2 of 5
OpenAI ships GPT-5.5
First fully retrained base model since GPT-4.5; stronger agentic coding; API price doubles to $5/$30 per M tokens vs. GPT-5.4's $2.50/$15.
JadidJust-in AI Developments, Incidents & DeadlinesJadidJust-in AI Developments, Incidents & DeadlinesFriday, April 24, 2026 · 2 of 5
First fully retrained base model since GPT-4.5; stronger agentic coding; API price doubles to $5/$30 per M tokens vs. GPT-5.4's $2.50/$15.