19:01
2026-08-30
pub.towardsai.net
artificial-intelligence
ChatGPT Retired o3. I Tested What Replaced It Against Claude and Gemini.
OpenAI retired the o3 model from ChatGPT on August 26, 2026, replacing it with the GPT-5.6 family, including GPT-5.6 Sol Instant, while API snapshots like o3-2025-04-16 point to gpt-5.6-sol with a lat…