GPT 5.5 Released in Codex

Just updated codex to v0.122.0 and got a pleasant surprise! 1. gpt-5.5 (current) Latest frontier agentic coding model. 2. oai-2.1 Latest frontier agentic coding model. 3. gpt-5.4 Latest frontier agentic coding model. 4. gpt-5.2-codex Frontier agentic coding model. 5. arcanine Frontier model with...