CODEXIS AI AgentChangelog
12 June 2026 — New models and EU data residency
Newly available models (OpenAI, Anthropic) and the option to process queries within the EU.
1. Newly available models
New language models from OpenAI and Anthropic have been added to the model selection:
OpenAI
- GPT-5.5 — Best response quality.
- GPT-5.4 — Best default quality for interactive chat.
- GPT-5.4 Mini — A cheaper variant of GPT-5.4.
- GPT-5.4 Nano — The fastest option in the GPT-5.4 range.
Anthropic
- Claude Fable 5 — Anthropic's most capable Claude model for deep reasoning and the most demanding tasks.
- Claude Opus 4.8 — Anthropic's most capable Opus-class model for complex reasoning.
- Claude Sonnet 4.6 — Anthropic's best combination of speed and intelligence.
2. Processing queries in the EU
For the ChatGPT (OpenAI) models you can now enable processing of queries within the European Union (EU data residency) in the chat settings. You will find the option among the model parameters under Data processing — switching it to Europe runs query processing in the European region.
