Improved
Feb 17-18th Agent Model Option Cleanup
February 18th, 2026
We've cleaned up the AI model selection in Agent Builder to make it easier to choose the right model for your agents — and to keep you on the latest and best-performing options.
What changed:
- Removed older models that were either soon to be deprecated by providers or there's an updated option in the model series available.
- Automatically migrated all agents using older models to newer, more capable alternatives
The models you're using now:
- Agents driven by Claude Opus 4.5 → reassigned to Claude Opus 4.6
- Agents driven by other removed Anthropic model → reassigned to Claude Sonnet 4.6 (also released today as an option, and now the new default for newly created Agents!)
- Agents driven by older OpenAI models → reassigned to GPT-5.2 - Thinking
You'll still have access to several other powerful models across Anthropic, OpenAI, and Google in the Agent Builder, but they'll be the most recent, reliable and intelligent models to choose from. See more details here on what models are now available in NinjaCat: https://docs.ninjacat.io/docs/model-selection