Model configuration changedmodel-config
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828828| `DISABLE_PROMPT_CACHING_OPUS` | Set to `1` to disable prompt caching for Opus models only |
829829| `DISABLE_PROMPT_CACHING_FABLE` | Set to `1` to disable prompt caching for Fable models only |
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831To change the cache TTL or learn what triggers a cache miss, see [How Claude Code uses prompt caching](/docs/en/prompt-caching).
831To choose the cache TTL for the main conversation and for subagents separately, see [choose the TTL yourself](/docs/en/prompt-caching#choose-the-ttl-yourself). For what triggers a cache miss, see [How Claude Code uses prompt caching](/docs/en/prompt-caching).
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