fallbacks:
    - kimi-k2.5: [gemini-2.5-flash,gemini-2.5-flash-lite]
    - gemini-2.5-flash: [gemini-2.5-flash-lite]
    - v0: [gemini-2.5-flash,gemini-2.5-flash-lite]
    - gemini-3-pro-preview: [gemini-2.5-pro,gemini-3-flash-preview,openrouter/gemini-3-flash-preview,gemini-2.5-flash,gemini-2.5-flash-lite]
    - gemini-2.5-pro: [gemini-3-flash-preview,openrouter/gemini-3-flash-preview:,gemini-2.5-flash,gemini-2.5-flash-lite]
    - gemini-3-flash-preview: [openrouter/gemini-3-flash-preview,gemini-2.5-flash,gemini-2.5-flash-lite]
    - gpt-5.3-codex: [gpt-5.3-codex-spark,openai/gpt-5.2-codex,openai/gpt-5.2-codex,openai/gpt-5.1-codex,openai/gpt-5.1-codex]
    - gpt-5.2-codex: [gpt-5.1-codex,gpt-5.1-codex-max,gpt-5.1-codex-mini]
    - gpt-5.1-codex: [gpt-5.1-codex-max,gpt-5.1-codex-mini,gpt-5.1]