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Claude Opus 5.5, GPT-6 Sol and GPT-6 Luna models added

Changelog

Feature Platform CloudUI, API

In 0.30.0

AnthropicOpenAIEnvironment Variables#3769#3771#3774

Three new models are available: Claude Opus 5.5 (claude-opus-5-5, plus the 1M-context claude-opus-5-5[1m]), GPT-6 Sol (gpt-6-sol) and GPT-6 Luna (gpt-6-luna). All are seeded as enabled favorites, and Opus 5.5 is marked as the recommended Anthropic model. Opus 5 stays enabled for existing agents.

GPT-6 Luna replaces GPT-5.6 Terra as the platform default model. It is also the default utility model behind Agent Analyze, Health checks and llm_judge guardrails; set UTILITY_LLM_MODEL to choose another.

See Anthropic, OpenAI and environment variables. PRs #3769, #3771, #3774.