CODEXIS AI
CODEXIS AI AgentChangelog

10 July 2026 — GPT-5.6 models and the Czech Contract Register add-on

OpenAI's new GPT-5.6 model generation (Sol, Terra, Luna) and a new add-on connected to the Czech Contract Register — search public contracts by subject, contracting parties, company ID, value and date of conclusion.

1. New GPT-5.6 models

The model picker now includes OpenAI's new model generation — the GPT-5.6 family:

  • GPT-5.6 Sol — the most capable model of the GPT-5.6 family. Reach for it on tasks where the highest answer quality and reliability are the priority.
  • GPT-5.6 Terra — a balanced model combining high quality, reasonable speed and a lower price than GPT-5.6 Sol. At default settings it costs the same as GPT-5.4.
  • GPT-5.6 Luna — the fastest and most cost-efficient model of the GPT-5.6 family, best suited to simpler, repetitive or high-volume tasks.
Model picker — the GPT-5.6 family
Model picker — the GPT-5.6 family

2. New add-on: Czech Contract Register

A new add-on connected to the Czech Contract Register (smlouvy.gov.cz). It searches contracts published by the state, municipalities and other obliged entities — you can search by contract subject, contracting parties, company ID (IČO), value and date of conclusion. You'll find it under Add-ons → Czech Contract Register.

Czech Contract Register add-on — contract search and CSV export
Czech Contract Register add-on — contract search and CSV export

On this page